Pub Date : 2025-11-24DOI: 10.1109/OJIA.2025.3635891
Seyed Hossein Aleyasin;Fausto Stella;Radu Bojoi;Enrico Vico;Chaohui Liu
DC-link capacitors are among the most critical components in traction inverters, with a high likelihood of failure. Effective condition monitoring (CM) of these capacitors is crucial for improving converter reliability and preventing catastrophic failures. This article presents a cost-effective and reliable methodology for evaluating the health state of film capacitors used as dc-link in traction inverters. The proposed approach uses a controlled discharge test to track capacitance variations over time, which can be used as an indirect indicator of the capacitor’s health state. Key advantages of this technique include the minimal additional component requirements for cost efficiency, strong noise immunity, and high precision. Furthermore, the proposed aging detection test can be fully automated without requiring the removal of the capacitor or modifications to the converter’s power stage. Experimental results are provided to validate the effectiveness of the proposed solution.
{"title":"A Simple and Cost-Effective Method for Condition Monitoring of Inverter DC-Link Film Capacitors Based on Capacitance Variation","authors":"Seyed Hossein Aleyasin;Fausto Stella;Radu Bojoi;Enrico Vico;Chaohui Liu","doi":"10.1109/OJIA.2025.3635891","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3635891","url":null,"abstract":"DC-link capacitors are among the most critical components in traction inverters, with a high likelihood of failure. Effective condition monitoring (CM) of these capacitors is crucial for improving converter reliability and preventing catastrophic failures. This article presents a cost-effective and reliable methodology for evaluating the health state of film capacitors used as dc-link in traction inverters. The proposed approach uses a controlled discharge test to track capacitance variations over time, which can be used as an indirect indicator of the capacitor’s health state. Key advantages of this technique include the minimal additional component requirements for cost efficiency, strong noise immunity, and high precision. Furthermore, the proposed aging detection test can be fully automated without requiring the removal of the capacitor or modifications to the converter’s power stage. Experimental results are provided to validate the effectiveness of the proposed solution.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"867-876"},"PeriodicalIF":3.3,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11266941","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145729271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-24DOI: 10.1109/OJIA.2025.3635867
Aqeel Ur Rahman;Nicola Campagna;Filippo Pellitteri;Antonino Oscar Di Tommaso;Rosario Miceli
In this article, the control of a photovalatic (PV)-battery-based dc microgrid is presented to power an electrolyzer-based hydrogen system. The three-phase interleaving topology is considered for three different converters: an interleaving boost converter, an interleaving four-switch single-inductor buck–boost converter, and an interleaving buck converter. MPPT and droop-based control are recommended for maximum power extraction from the PV system and regulation of the dc-bus voltage. A cascaded hybrid nonlinear controller is developed for current and voltage control, merging the advantages of both linear and nonlinear control theory. The design ensures an uninterrupted power supply to the electrolyzer for hydrogen production. The algorithm is simulated in MATLAB/Simulink and validated through rapid control prototyping using a TI C2000 microcontroller unit (MCU) and a Typhoon 404 device for real-time results. Moreover, a comparative analysis with other state-of-the-art control structures is also presented to show the efficiency of the proposed controller. The simulation results, comparative analysis, and hardware results under different conditions confirm the adaptability of the proposed control algorithms for real applications.
{"title":"Cascaded Lyapunov-Based Hybrid Control of Multiphase Interleaving Converters for Power-to-Hydrogen in DC Microgrid","authors":"Aqeel Ur Rahman;Nicola Campagna;Filippo Pellitteri;Antonino Oscar Di Tommaso;Rosario Miceli","doi":"10.1109/OJIA.2025.3635867","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3635867","url":null,"abstract":"In this article, the control of a photovalatic (PV)-battery-based dc microgrid is presented to power an electrolyzer-based hydrogen system. The three-phase interleaving topology is considered for three different converters: an interleaving boost converter, an interleaving four-switch single-inductor buck–boost converter, and an interleaving buck converter. MPPT and droop-based control are recommended for maximum power extraction from the PV system and regulation of the dc-bus voltage. A cascaded hybrid nonlinear controller is developed for current and voltage control, merging the advantages of both linear and nonlinear control theory. The design ensures an uninterrupted power supply to the electrolyzer for hydrogen production. The algorithm is simulated in MATLAB/Simulink and validated through rapid control prototyping using a TI C2000 microcontroller unit (MCU) and a Typhoon 404 device for real-time results. Moreover, a comparative analysis with other state-of-the-art control structures is also presented to show the efficiency of the proposed controller. The simulation results, comparative analysis, and hardware results under different conditions confirm the adaptability of the proposed control algorithms for real applications.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"836-851"},"PeriodicalIF":3.3,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11266901","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1109/OJIA.2025.3633191
Byungchul Kim
Alternating direction method of multipliers (ADMM) is effective for addressing optimal power flow (OPF) convex optimization. However, ADMM significant drawback is absence of guaranteed convergence. Considering OPF interactions resulting from the unstable voltage relationship among energy storage system-photovoltaic (ESS-PV) inverters, a steady state voltage security area is established for these inverters. To assess the voltage security margin between the operational state and the security boundary, a voltage excursion indicator is proposed for processing OPF within the local area. The proposed approach enables a fully guaranteed convergence and optimized power flow within a decentralized distributed energy management framework, systematically via multiblock ADMM handling of large-scale and distributed data via energy internet. This approach guaranteed convergence of OPF via local consensus control by distributed ESS-PV systems with energy internet via all-to-all communication between centralized energy managers and inverters. Simulation results show the effectiveness of proposed approach.
{"title":"Cloud Energy Internet Based High Optimum Control of Residential ESS-PV Inverters in Local Power Systems","authors":"Byungchul Kim","doi":"10.1109/OJIA.2025.3633191","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3633191","url":null,"abstract":"Alternating direction method of multipliers (ADMM) is effective for addressing optimal power flow (OPF) convex optimization. However, ADMM significant drawback is absence of guaranteed convergence. Considering OPF interactions resulting from the unstable voltage relationship among energy storage system-photovoltaic (ESS-PV) inverters, a steady state voltage security area is established for these inverters. To assess the voltage security margin between the operational state and the security boundary, a voltage excursion indicator is proposed for processing OPF within the local area. The proposed approach enables a fully guaranteed convergence and optimized power flow within a decentralized distributed energy management framework, systematically via multiblock ADMM handling of large-scale and distributed data via energy internet. This approach guaranteed convergence of OPF via local consensus control by distributed ESS-PV systems with energy internet via all-to-all communication between centralized energy managers and inverters. Simulation results show the effectiveness of proposed approach.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"821-835"},"PeriodicalIF":3.3,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11250528","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-31DOI: 10.1109/OJIA.2025.3627886
Wisam Ali Mohamad Issa;Luigi Galotto Junior;Leon M. Tolbert;João Onofre Pereira Pinto
This work presents an analysis of the reduction in energy generation of grid-connected photovoltaic (PV) systems due to their compliance with the IEEE 1547 voltage–reactive power mode control, also known as volt-var, exposing the linkage of this phenomenon with factors such as the strength of the feeder, loading conditions, and the distributed generation penetration. In this study, two batches of three sequences of full-year simulations were conducted using the open-source software OpenDSS in co-simulation with MATLAB, involving three different feeders with and without tap changers activated over different penetration levels of PVs. In order to adequately simulate the time series of annual solar irradiance, a model of solar transposition and a methodology for the choice of the solar panels' tilt angle were adopted in conjunction with a solar radiation dataset obtained from the National Solar Research Database. One notable finding is that for a given feeder, there is an optimal penetration percentage at which the required relative curtailment is minimized. Below this condition, the loss of generation opportunity is mostly caused by the feeder's own voltage regulation issues (i.e., those that happen without PVs), while above it, loss of generation is mostly caused by reverse power flow. It was observed that weak feeders tend to have higher levels of curtailment under both low and high penetration percentages, while strong feeders may share the same conclusion for low levels only. Seasonal variation of available solar irradiation has a measurable influence on the curtailment. Fixed capacitor banks significantly reduce the generation curtailment due to voltage support compliance from the PV inverters when their penetration level is low, while the expected curtailment for high levels of penetration is much lower than anticipated. Although tap changers are capable of reducing the effort demanded from most of the distributed generation inverters, in some cases, they can also increase the effort from others located in specific regions outside of their effective sections. This study makes three main contributions: 1) it integrates IEEE 1547 compliance, feeder loading/strength, distributed energy resource (DER) penetration, and real irradiance models into a long-term simulation framework; 2) it provides practical insights that can support standard setting, distribution system planning, and inverter programming; and 3) it enables the estimation of hosting capacity based on the maximum curtailment tolerable for consumer-owned DERs, thereby supporting technical and economic investment analyses.
{"title":"Analysis of IEEE 1547 Voltage–Reactive Power Mode Control Impact on the Energy Generation Curtailment of Grid-Connected Photovoltaic Systems","authors":"Wisam Ali Mohamad Issa;Luigi Galotto Junior;Leon M. Tolbert;João Onofre Pereira Pinto","doi":"10.1109/OJIA.2025.3627886","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3627886","url":null,"abstract":"This work presents an analysis of the reduction in energy generation of grid-connected photovoltaic (PV) systems due to their compliance with the IEEE 1547 voltage–reactive power mode control, also known as volt-var, exposing the linkage of this phenomenon with factors such as the strength of the feeder, loading conditions, and the distributed generation penetration. In this study, two batches of three sequences of full-year simulations were conducted using the open-source software OpenDSS in co-simulation with MATLAB, involving three different feeders with and without tap changers activated over different penetration levels of PVs. In order to adequately simulate the time series of annual solar irradiance, a model of solar transposition and a methodology for the choice of the solar panels' tilt angle were adopted in conjunction with a solar radiation dataset obtained from the National Solar Research Database. One notable finding is that for a given feeder, there is an optimal penetration percentage at which the required relative curtailment is minimized. Below this condition, the loss of generation opportunity is mostly caused by the feeder's own voltage regulation issues (i.e., those that happen without PVs), while above it, loss of generation is mostly caused by reverse power flow. It was observed that weak feeders tend to have higher levels of curtailment under both low and high penetration percentages, while strong feeders may share the same conclusion for low levels only. Seasonal variation of available solar irradiation has a measurable influence on the curtailment. Fixed capacitor banks significantly reduce the generation curtailment due to voltage support compliance from the PV inverters when their penetration level is low, while the expected curtailment for high levels of penetration is much lower than anticipated. Although tap changers are capable of reducing the effort demanded from most of the distributed generation inverters, in some cases, they can also increase the effort from others located in specific regions outside of their effective sections. This study makes three main contributions: 1) it integrates IEEE 1547 compliance, feeder loading/strength, distributed energy resource (DER) penetration, and real irradiance models into a long-term simulation framework; 2) it provides practical insights that can support standard setting, distribution system planning, and inverter programming; and 3) it enables the estimation of hosting capacity based on the maximum curtailment tolerable for consumer-owned DERs, thereby supporting technical and economic investment analyses.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"7 ","pages":"48-64"},"PeriodicalIF":3.3,"publicationDate":"2025-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11223786","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the rise of the carbon neutrality strategy, there has been a global push to harness clean energy sources such as solar, wind, and hydropower, which are often located in remote areas from central cities. Long-distance transmission lines traverse various complex terrains, potentially crossing regions in China with altitudes ranging from 0 to 4800 m. In this context, this article focuses on studying the corona inception characteristics of large transmission line fittings at different altitudes. First, the corona characteristics of transmission line fittings at altitudes of 60 and 4350 m are examined. The study obtained corona inception electric field characteristics for fittings with different type and size. In addition, to understand the corona inception characteristics of fittings at intermediate altitudes, simulated altitude tests were conducted in an artificial climate laboratory. Based on these experimental results, this study provides recommended fitting parameters for transmission lines at various altitudes. Furthermore, considering that transmission towers, especially tension towers with special conductor structures, may exhibit increased corona characteristics due to conductor bending, the impact of jump lines on corona discharge characteristics in high altitude areas was also investigated. The series of conductor parameters obtained will benefit the construction of transmission lines in various regions globally.
{"title":"Corona Discharge Characteristics and Size Optimization of Large Fittings for Ultra-High Voltage Transmission Lines up to 4800 m","authors":"Changzhi Peng;Liang Xie;Xuekai Pei;Xuzhu Dong;Pengkang Xie","doi":"10.1109/OJIA.2025.3627507","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3627507","url":null,"abstract":"With the rise of the carbon neutrality strategy, there has been a global push to harness clean energy sources such as solar, wind, and hydropower, which are often located in remote areas from central cities. Long-distance transmission lines traverse various complex terrains, potentially crossing regions in China with altitudes ranging from 0 to 4800 m. In this context, this article focuses on studying the corona inception characteristics of large transmission line fittings at different altitudes. First, the corona characteristics of transmission line fittings at altitudes of 60 and 4350 m are examined. The study obtained corona inception electric field characteristics for fittings with different type and size. In addition, to understand the corona inception characteristics of fittings at intermediate altitudes, simulated altitude tests were conducted in an artificial climate laboratory. Based on these experimental results, this study provides recommended fitting parameters for transmission lines at various altitudes. Furthermore, considering that transmission towers, especially tension towers with special conductor structures, may exhibit increased corona characteristics due to conductor bending, the impact of jump lines on corona discharge characteristics in high altitude areas was also investigated. The series of conductor parameters obtained will benefit the construction of transmission lines in various regions globally.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"799-808"},"PeriodicalIF":3.3,"publicationDate":"2025-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11223115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145560625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-27DOI: 10.1109/OJIA.2025.3625735
Diego Di Lallo;Rashida Khalid;Vincenzo Catania;M. Jibran S. Zuberi;Carmen L.T. Borges;Norma Anglani
This article presents an optimal management strategy, first, to better deploy an overproduction from a photovoltaic power plant, along with hydrogen storage, second, by reorganizing all the energy flows and using a combined cooling heat and power (CCHP) plant to decrease the primary energy consumption, and, third, without deteriorating the carbon footprint of the facility. The scope is to show how to support an industrial application of green hydrogen from an energy management and decarbonization standpoint. The main hydrogen production techniques are investigated, and the results are compared and validated by literature. A two-years monitoring campaign at a dairy firm consuming electricity, heat, and cooling energy is the test bed of the study: the best configuration consists of a CCHP plant with a green Hydrogen-based energy storage system, which depending on the season, is able to save between 40% and 42% in terms of operative costs, a range in the emissions between 1% and 12%. Only the primary energy consumption slightly increase in summer (+0.2 toe/day).
{"title":"Development of the Hydrogen Supply Chain to Support a CCHP Plant With PV Overproduction Test Bed on a Dairy Firm","authors":"Diego Di Lallo;Rashida Khalid;Vincenzo Catania;M. Jibran S. Zuberi;Carmen L.T. Borges;Norma Anglani","doi":"10.1109/OJIA.2025.3625735","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3625735","url":null,"abstract":"This article presents an optimal management strategy, first, to better deploy an overproduction from a photovoltaic power plant, along with hydrogen storage, second, by reorganizing all the energy flows and using a combined cooling heat and power (CCHP) plant to decrease the primary energy consumption, and, third, without deteriorating the carbon footprint of the facility. The scope is to show how to support an industrial application of <italic>green</i> hydrogen from an energy management and decarbonization standpoint. The main hydrogen production techniques are investigated, and the results are compared and validated by literature. A two-years monitoring campaign at a dairy firm consuming electricity, heat, and cooling energy is the test bed of the study: the best configuration consists of a CCHP plant with a green Hydrogen-based energy storage system, which depending on the season, is able to save between 40% and 42% in terms of operative costs, a range in the emissions between 1% and 12%. Only the primary energy consumption slightly increase in summer (+0.2 toe/day).","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"772-784"},"PeriodicalIF":3.3,"publicationDate":"2025-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11218018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145510189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-22DOI: 10.1109/OJIA.2025.3623932
Little Pradhan;Abhijit Kshirsagar;D. Venkatramanan;Marco Di Benedetto;Alessandro Lidozzi
Cascaded H-bridge (CHB) multilevel inverters are well-suited for medium-voltage charging stations because of their inherent modularity, scalability, and efficient voltage conversion capability. However, conventional level-shifted PWM (LSPWM) schemes often lead to uneven distribution of active and reactive power among individual modules. This imbalance produces nonuniform semiconductor losses, increases thermal stress, and accelerates premature failures in overstressed modules. Alternative methods, such as space-vector modulation and switching-angle adjustment, can mitigate these issues, but their computational complexity becomes prohibitive for higher-level CHB topologies. Carrier-reassignment PWM strategies, including First-In-First-Out (FIFO), provide simpler implementations but still fail to achieve complete power and loss balancing. This article contributes to the state-of-the-art in two key ways. First, it extends carrier-reassignment PWM, previously demonstrated only for 9-level CHBs, to a 17-level CHB inverter, introducing two new reassignment strategies: Type-A and Type-B. The Type-A scheme enables highly uniform real-power sharing under a unity power factor (PF). At the same time, the Type-B approach achieves balanced loss distribution across the full PF range and effectively eliminates circulating power at zero PF, surpassing existing rotation-based methods. Second, the article proposes a comprehensive validation framework that integrates analytical loss modeling of CoolSiC™ devices with hardware-in-the-loop (HIL) experiments, employing an OP4510 digital simulator and a PED-Board controller. Experimental results confirm that the proposed schemes substantially enhance both power and loss distribution, while also reducing current total harmonic distortion compared to conventional approaches. Overall, the proposed methods provide a practical pathway toward more reliable and efficient CHB converters for electric vehicle charging and medium-voltage applications.
{"title":"Module Power and Loss Balancing Through Carrier-Reassignment PWM in a 17-Level CHB Inverter","authors":"Little Pradhan;Abhijit Kshirsagar;D. Venkatramanan;Marco Di Benedetto;Alessandro Lidozzi","doi":"10.1109/OJIA.2025.3623932","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3623932","url":null,"abstract":"Cascaded H-bridge (CHB) multilevel inverters are well-suited for medium-voltage charging stations because of their inherent modularity, scalability, and efficient voltage conversion capability. However, conventional level-shifted PWM (LSPWM) schemes often lead to uneven distribution of active and reactive power among individual modules. This imbalance produces nonuniform semiconductor losses, increases thermal stress, and accelerates premature failures in overstressed modules. Alternative methods, such as space-vector modulation and switching-angle adjustment, can mitigate these issues, but their computational complexity becomes prohibitive for higher-level CHB topologies. Carrier-reassignment PWM strategies, including First-In-First-Out (FIFO), provide simpler implementations but still fail to achieve complete power and loss balancing. This article contributes to the state-of-the-art in two key ways. First, it extends carrier-reassignment PWM, previously demonstrated only for 9-level CHBs, to a 17-level CHB inverter, introducing two new reassignment strategies: Type-A and Type-B. The Type-A scheme enables highly uniform real-power sharing under a unity power factor (PF). At the same time, the Type-B approach achieves balanced loss distribution across the full PF range and effectively eliminates circulating power at zero PF, surpassing existing rotation-based methods. Second, the article proposes a comprehensive validation framework that integrates analytical loss modeling of CoolSiC™ devices with hardware-in-the-loop (HIL) experiments, employing an OP4510 digital simulator and a PED-Board controller. Experimental results confirm that the proposed schemes substantially enhance both power and loss distribution, while also reducing current total harmonic distortion compared to conventional approaches. Overall, the proposed methods provide a practical pathway toward more reliable and efficient CHB converters for electric vehicle charging and medium-voltage applications.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"742-757"},"PeriodicalIF":3.3,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11214360","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145510242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-20DOI: 10.1109/OJIA.2025.3623936
Giovanni Marini;Nícolas Baschera;Alessandro Lidozzi;Marco di Benedetto;Luca Solero
This article introduces a novel method for self-commissioning controllers and active damping in LCL grid-tied three-phase voltage source inverters. The proposed impedance estimation method is designed with the goal of minimizing invasiveness on the grid and ultimately optimizing the result. To obtain the values of resistance and inductance, a cyclical algorithm is performed. The estimated values are then fed into the self-commissioning proportional-integral (PI) controller, in which the gains are calculated based on the current estimated values of the grid resistance and inductance, and into the self-commissioning active damping system, in which the resonance frequency is calculated using the estimated grid inductance and used to change the operating frequency of the active damping. The experimental results are obtained using hardware-in-the-loop and actual hardware. The experimental results validate the proposed estimation along with its functioning with the self-commissioning control system and active damping. The contributions of this article are a presentation of active impedance estimation, a control design that adapts PI gains based on current grid impedance estimates, and an improved active damping method using second-order Butterworth filters to enhance stability and noise mitigation.
{"title":"Multi-SIN-Based Real-Time Impedance Estimation for Self-Commissioning Controller and Active Damping in an LCL-Grid-Tied VSI","authors":"Giovanni Marini;Nícolas Baschera;Alessandro Lidozzi;Marco di Benedetto;Luca Solero","doi":"10.1109/OJIA.2025.3623936","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3623936","url":null,"abstract":"This article introduces a novel method for self-commissioning controllers and active damping in LCL grid-tied three-phase voltage source inverters. The proposed impedance estimation method is designed with the goal of minimizing invasiveness on the grid and ultimately optimizing the result. To obtain the values of resistance and inductance, a cyclical algorithm is performed. The estimated values are then fed into the self-commissioning proportional-integral (PI) controller, in which the gains are calculated based on the current estimated values of the grid resistance and inductance, and into the self-commissioning active damping system, in which the resonance frequency is calculated using the estimated grid inductance and used to change the operating frequency of the active damping. The experimental results are obtained using hardware-in-the-loop and actual hardware. The experimental results validate the proposed estimation along with its functioning with the self-commissioning control system and active damping. The contributions of this article are a presentation of active impedance estimation, a control design that adapts PI gains based on current grid impedance estimates, and an improved active damping method using second-order Butterworth filters to enhance stability and noise mitigation.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"785-798"},"PeriodicalIF":3.3,"publicationDate":"2025-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11208693","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145510241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-20DOI: 10.1109/OJIA.2025.3623467
Andrea Golino;Lorenzo Frattale Mascioli;Riccardo Loggia;Cristina Moscatiello;Maria Carmen Falvo;Luigi Martirano
Increasing attention to sustainable energy solutions has rekindled the focus on microgrids integrated with vehicle-to-building (V2B) technologies, which enable bidirectional energy exchange between electric vehicles and the building grid. This article presents a model for optimizing energy exchange in the LAMBDA lab’s microgrid, consisting of photovoltaic panels, an energy storage system, and a V2B-enabled charging station. After a short review of the state of the art on V2B, including operating principles and practical applications, an innovative algorithm was developed, specifically designed to optimize building’s energy flows, with the target of increasing its efficiency and promoting its energy self-sufficiency. The microgrid is managed by a programmable logic controller with the suggested algorithm implemented in a Python model, under different operational scenarios. The simulations use realistic PV generation and consumption profiles of lab loads, randomly varying vehicle parameters such as parking duration and charge levels. The article ends with a real implementation of the algorithm on the microgrid, analysis of the results obtained, highlighting opportunities for improving the model.
{"title":"Vehicle to Building (V2B) Technologies Integrated in LVAC Microgrids: A Case Study of a Smart University Lab","authors":"Andrea Golino;Lorenzo Frattale Mascioli;Riccardo Loggia;Cristina Moscatiello;Maria Carmen Falvo;Luigi Martirano","doi":"10.1109/OJIA.2025.3623467","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3623467","url":null,"abstract":"Increasing attention to sustainable energy solutions has rekindled the focus on microgrids integrated with vehicle-to-building (V2B) technologies, which enable bidirectional energy exchange between electric vehicles and the building grid. This article presents a model for optimizing energy exchange in the LAMBDA lab’s microgrid, consisting of photovoltaic panels, an energy storage system, and a V2B-enabled charging station. After a short review of the state of the art on V2B, including operating principles and practical applications, an innovative algorithm was developed, specifically designed to optimize building’s energy flows, with the target of increasing its efficiency and promoting its energy self-sufficiency. The microgrid is managed by a programmable logic controller with the suggested algorithm implemented in a Python model, under different operational scenarios. The simulations use realistic PV generation and consumption profiles of lab loads, randomly varying vehicle parameters such as parking duration and charge levels. The article ends with a real implementation of the algorithm on the microgrid, analysis of the results obtained, highlighting opportunities for improving the model.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"758-771"},"PeriodicalIF":3.3,"publicationDate":"2025-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11207720","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145510188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-17DOI: 10.1109/OJIA.2025.3622910
S. A. Saleh
Common-mode voltages are considered major challenges for variable frequency electric motor drives (VFDs), including permanent magnet synchronous motor (PMSM) drives. The switching techniques of VFD inverter have demonstrated promising abilities to reduce common-mode voltage in PMSM-VFDs. This article proposes the use of $3phi$, voltage-source, wavelet modulated six-pulse dc–ac power electronic converter (PEC) to minimize the common-mode voltage in PMSM-VFDs. The wavelet modulation technique is set to be featured with an optimized resolution-level, in order to adjust the duration and location of each ON switching pulse generated by the wavelet modulation technique. Such adjustments aim to decrease the energy present in harmonic frequencies of stator voltages, and to significantly reduce the instantaneous unbalance of stator voltages. These applied actions to stator voltages can offer minimizing the common-mode voltage without the need for filtering circuits and/or a special design of the $3phi$ dc–ac PEC comprising a PMSM-VFD. The performance of the resolution-level optimization method is experimentally tested using a 10$hp$ PMSM-VFD for various loading levels and operating speeds. Test results demonstrate that the use of a wavelet modulated dc–ac PEC with an optimized resolution-level, can have remarkable improvements on the operation of the PMSM-VFD, in terms of reduced common-mode voltages and torque pulsations. Furthermore, test results show that the resolution-level optimization method has minor effects on the actions of the PMSM-VFD controller.
共模电压被认为是变频电机驱动(vfd)的主要挑战,包括永磁同步电机(PMSM)驱动。VFD逆变器的开关技术在降低pmsm -VFD共模电压方面表现出了良好的能力。本文提出使用$3phi$电压源,小波调制的六脉冲直流-交流电力电子转换器(PEC)来降低pmsm - vfd的共模电压。为了调整小波调制技术产生的每个ON开关脉冲的持续时间和位置,将小波调制技术设置为具有优化的分辨率水平。这种调整旨在降低定子电压谐波频率中存在的能量,并显著降低定子电压的瞬时不平衡。这些作用于定子电压的动作可以提供最小的共模电压,而不需要滤波电路和/或包含PMSM-VFD的$3phi$ dc-ac PEC的特殊设计。在不同负载水平和运行速度下,采用10 hp PMSM-VFD对分辨率级优化方法的性能进行了实验测试。测试结果表明,采用优化分辨率水平的小波调制dc-ac PEC,可以显著改善PMSM-VFD的工作,降低共模电压和转矩脉动。此外,测试结果表明,分辨率级优化方法对PMSM-VFD控制器的动作影响较小。
{"title":"Minimizing the Common-Mode Voltage in Variable Frequency Permanent Magnet Synchronous Motor Drives Using Resolution-Level Optimization","authors":"S. A. Saleh","doi":"10.1109/OJIA.2025.3622910","DOIUrl":"https://doi.org/10.1109/OJIA.2025.3622910","url":null,"abstract":"Common-mode voltages are considered major challenges for variable frequency electric motor drives (VFDs), including permanent magnet synchronous motor (PMSM) drives. The switching techniques of VFD inverter have demonstrated promising abilities to reduce common-mode voltage in PMSM-VFDs. This article proposes the use of <inline-formula><tex-math>$3phi$</tex-math></inline-formula>, voltage-source, wavelet modulated six-pulse dc–ac power electronic converter (PEC) to minimize the common-mode voltage in PMSM-VFDs. The wavelet modulation technique is set to be featured with an optimized resolution-level, in order to adjust the duration and location of each ON switching pulse generated by the wavelet modulation technique. Such adjustments aim to decrease the energy present in harmonic frequencies of stator voltages, and to significantly reduce the instantaneous unbalance of stator voltages. These applied actions to stator voltages can offer minimizing the common-mode voltage without the need for filtering circuits and/or a special design of the <inline-formula><tex-math>$3phi$</tex-math></inline-formula> dc–ac PEC comprising a PMSM-VFD. The performance of the resolution-level optimization method is experimentally tested using a 10<inline-formula><tex-math>$hp$</tex-math></inline-formula> PMSM-VFD for various loading levels and operating speeds. Test results demonstrate that the use of a wavelet modulated dc–ac PEC with an optimized resolution-level, can have remarkable improvements on the operation of the PMSM-VFD, in terms of reduced common-mode voltages and torque pulsations. Furthermore, test results show that the resolution-level optimization method has minor effects on the actions of the PMSM-VFD controller.","PeriodicalId":100629,"journal":{"name":"IEEE Open Journal of Industry Applications","volume":"6 ","pages":"728-741"},"PeriodicalIF":3.3,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11206483","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145455868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}