Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9940059
J. Gu, Lin-Chen Hsu, Jing-Min Wang, Ming-Ta Yang
Load-shedding is an effective control strategy for realization of the power supply-demand balancing. The balancing supply and demand is a crucial issue for power system stability. In this paper, based on IEC 61850 protocols, a supervisory control and data acquisition (SCADA) platform of dynamic load-shedding (DLS) technology in microgrid (MG) is built. Integrating of SCADA and IED (intelligent electronic device), the proposed technology can fetch the information of power generation, power consumption, and MG structure in real time to evaluate the appropriate amount of load to be shed. The proposed DLS technology has been verified on the simulated MG in Qimei Island, Penghu, Taiwan. Compared with conventional methods, the simulation results verify that the proposed DLS provides the fast and precise load-shedding in different loading scenarios. The proposed method has the superiority in reducing the amount of load-shedding and shedding time.
{"title":"A Dynamic Load-Shedding Technology based on IEC 61850 in Microgrid","authors":"J. Gu, Lin-Chen Hsu, Jing-Min Wang, Ming-Ta Yang","doi":"10.1109/IAS54023.2022.9940059","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940059","url":null,"abstract":"Load-shedding is an effective control strategy for realization of the power supply-demand balancing. The balancing supply and demand is a crucial issue for power system stability. In this paper, based on IEC 61850 protocols, a supervisory control and data acquisition (SCADA) platform of dynamic load-shedding (DLS) technology in microgrid (MG) is built. Integrating of SCADA and IED (intelligent electronic device), the proposed technology can fetch the information of power generation, power consumption, and MG structure in real time to evaluate the appropriate amount of load to be shed. The proposed DLS technology has been verified on the simulated MG in Qimei Island, Penghu, Taiwan. Compared with conventional methods, the simulation results verify that the proposed DLS provides the fast and precise load-shedding in different loading scenarios. The proposed method has the superiority in reducing the amount of load-shedding and shedding time.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130147502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9940081
Satish Belkhode, A. Shukla, S. Doolla
The silicon carbide (SiC)-based converters are emerging as an attractive solution for various industrial and utility scale applications due to their several important features. However, utilization of SiC devices in these systems also suffer from some challenges, such as higher cost, large turn-off overvoltage peaks, and increased conduction losses leading to restricted system performance. In this paper, a family of short commutation loop-based three-level hybrid active neutral-point-clamped rectifier (SCL-HNPCR) comprising SiC MOSFETs and Si/SiC diodes is proposed to address the afore-mentioned challenges. The proposed SCL-HNPCRs not only achieve high efficiency at reduced cost but also offer reduced turn-off voltage peak without adding any external passive components. Moreover, with the proposed control scheme, the SCL-HNPCRs minimize the conduction losses of SiC MOSFETs, mitigate the crosstalk related issues and achieve balanced loss distribution across the switching devices leading to optimized utilization. In this paper, the structure and operating principles of the proposed topology are discussed with the proposed control scheme. Further, analytical and simulation results are presented with the comparative evaluation against the existing NPC-derived rectifiers. Finally, the experimental validation results are demonstrated with the developed prototypes.
{"title":"A Family of Si and SiC devices-based Short Commutation Loop Hybrid-NPC Rectifiers","authors":"Satish Belkhode, A. Shukla, S. Doolla","doi":"10.1109/IAS54023.2022.9940081","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940081","url":null,"abstract":"The silicon carbide (SiC)-based converters are emerging as an attractive solution for various industrial and utility scale applications due to their several important features. However, utilization of SiC devices in these systems also suffer from some challenges, such as higher cost, large turn-off overvoltage peaks, and increased conduction losses leading to restricted system performance. In this paper, a family of short commutation loop-based three-level hybrid active neutral-point-clamped rectifier (SCL-HNPCR) comprising SiC MOSFETs and Si/SiC diodes is proposed to address the afore-mentioned challenges. The proposed SCL-HNPCRs not only achieve high efficiency at reduced cost but also offer reduced turn-off voltage peak without adding any external passive components. Moreover, with the proposed control scheme, the SCL-HNPCRs minimize the conduction losses of SiC MOSFETs, mitigate the crosstalk related issues and achieve balanced loss distribution across the switching devices leading to optimized utilization. In this paper, the structure and operating principles of the proposed topology are discussed with the proposed control scheme. Further, analytical and simulation results are presented with the comparative evaluation against the existing NPC-derived rectifiers. Finally, the experimental validation results are demonstrated with the developed prototypes.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129491279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9939958
Sheng-Huei Lee, Jian-Hong Liu, Bin-Yi Chen, C. Chu
The power system inertia can determine the ability of power system to keep synchronization in the case of short-term power imbalance. With the increasing penetration of renewable energy resources with less system inertia, accurate estimation of the power system inertia has become critical. To solve this challenging task, a two-stage data-driven estimation algorithm is proposed in this paper. First, analytical expressions of the frequency response under the steady-state and that of transient oscillatory components are derived first by integrating the low-order system frequency response model with the first-order turbine model. Then, based on this new parametric model, a two-stage estimation algorithm is developed. System parameters of oscillatory components can be extracted from PMU measurements, signal parameters, and rotational invariance techniques (ESPRIT) at the first stage. A weighted nonlinear least square approach can be applied at the second stage to estimate the system inertia, damping coefficient, turbine time constant, and regulation coefficient simultaneously by utilizing frequency measurement data from PMUs and parameters estimated from the ESPRIT algorithm. Finally, in order to validate the effectiveness of the proposed method, simulation studies of IEEE 39-bus system will be investigated first. Historical PMU measurements from Taiwan Power Systems will also be studied. Comparison studies with other existing methods are also performed to demonstrate the advantage of the proposed method.
{"title":"A Two-Stage Data-Driven Algorithm to Estimate the System Inertia Utilizing Event-Driven Disturbed PMU Measurements","authors":"Sheng-Huei Lee, Jian-Hong Liu, Bin-Yi Chen, C. Chu","doi":"10.1109/IAS54023.2022.9939958","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939958","url":null,"abstract":"The power system inertia can determine the ability of power system to keep synchronization in the case of short-term power imbalance. With the increasing penetration of renewable energy resources with less system inertia, accurate estimation of the power system inertia has become critical. To solve this challenging task, a two-stage data-driven estimation algorithm is proposed in this paper. First, analytical expressions of the frequency response under the steady-state and that of transient oscillatory components are derived first by integrating the low-order system frequency response model with the first-order turbine model. Then, based on this new parametric model, a two-stage estimation algorithm is developed. System parameters of oscillatory components can be extracted from PMU measurements, signal parameters, and rotational invariance techniques (ESPRIT) at the first stage. A weighted nonlinear least square approach can be applied at the second stage to estimate the system inertia, damping coefficient, turbine time constant, and regulation coefficient simultaneously by utilizing frequency measurement data from PMUs and parameters estimated from the ESPRIT algorithm. Finally, in order to validate the effectiveness of the proposed method, simulation studies of IEEE 39-bus system will be investigated first. Historical PMU measurements from Taiwan Power Systems will also be studied. Comparison studies with other existing methods are also performed to demonstrate the advantage of the proposed method.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121542102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9939726
G. A. Orcajo, Francisco Pedrayes G, J. Cano, J. G. Norniella, C. Rojas, J. Rodríguez D.
Present energy and environmental scenarios promote the incorporation of generation systems based on renewable sources into the distribution grids of electro-intensive industries, the benefits of which transcend the local generation of energy with minimal greenhouse gas emissions. In this regard, coordinated management of reactive power in a joint installation of a hot rolling mill plant and a wind farm can improve the immunity of both facilities against voltage sags. In this paper, the various factors influencing the response of the joint installation against voltage sags are analyzed. In this regard, special attention is paid to the wind farm location and, consequently, to the topology of the joint installation distribution network. The closer the wind farm and the rolling mill, the more relevant the shared impedances and the more significant the effect of the reactive power supplied by the wind farm. The main variables of interest are analyzed under actual rolling conditions both in normal operation and in the face of voltage sags to determine the most indicated distribution network topology.
{"title":"Voltage Sag Ride-Through in a Joint Installation of a Hot Rolling Mill Plant and a Wind Farm","authors":"G. A. Orcajo, Francisco Pedrayes G, J. Cano, J. G. Norniella, C. Rojas, J. Rodríguez D.","doi":"10.1109/IAS54023.2022.9939726","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939726","url":null,"abstract":"Present energy and environmental scenarios promote the incorporation of generation systems based on renewable sources into the distribution grids of electro-intensive industries, the benefits of which transcend the local generation of energy with minimal greenhouse gas emissions. In this regard, coordinated management of reactive power in a joint installation of a hot rolling mill plant and a wind farm can improve the immunity of both facilities against voltage sags. In this paper, the various factors influencing the response of the joint installation against voltage sags are analyzed. In this regard, special attention is paid to the wind farm location and, consequently, to the topology of the joint installation distribution network. The closer the wind farm and the rolling mill, the more relevant the shared impedances and the more significant the effect of the reactive power supplied by the wind farm. The main variables of interest are analyzed under actual rolling conditions both in normal operation and in the face of voltage sags to determine the most indicated distribution network topology.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122761192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9940031
Glorria Sebastian, M. Hannan, A. Al-Shetwi, P. Ker, K. Muttaqi, M. Uddin
This study proposes a solid-state transfer switch (SSTS) using fuzzy logic controller (FLC) design approach for enhancing the productivity and effectiveness of FLCs under harmonics conditions of a non-linear load using particle swarm optimization (PSO). A PSO-based FLC (PSOF) fitness function is also used to optimise and reduce the MSE to enhance the load transfer performance in a short period of time. The PSOF approach eliminates the time-consuming conventional trial-and-error method of deriving membership functions (MFs). Based on the fitness function evaluation findings, the created adaptive MFs are incorporated into voltage error and rate of change of voltage error for input and output. A harmonic filter is used to remove unwanted harmonic components induced by linear and nonlinear loads. To make sure the proposed control system works, the results are looked at both with and without PSO. The obtained transfer times were reduced by about 2ms, 4.35ms, 3.68ms and 3.56ms for 100%, 50%, 25% and 10% respectively, by optimising the fuzzy based system with PSO. Optimisation resulted in a total transfer time of 0.5ms, 8.72ms, 7.88ms and 7.32ms for 100%, 50%, 25% and 10% voltage sag, respectively. The design procedure and accuracy of the developed FLC are illustrated and investigated via simulation tests for the SSTS system. Results show that the optimised fuzzy controller is better than those obtained without the PSO algorithm in all tested cases in terms of transfer time and detection time and harmonic reduction.
{"title":"Particle Swarm Optimised Controller for Solid-State Transfer Switch Towards Fast Power Transfer and PQ Mitigation","authors":"Glorria Sebastian, M. Hannan, A. Al-Shetwi, P. Ker, K. Muttaqi, M. Uddin","doi":"10.1109/IAS54023.2022.9940031","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940031","url":null,"abstract":"This study proposes a solid-state transfer switch (SSTS) using fuzzy logic controller (FLC) design approach for enhancing the productivity and effectiveness of FLCs under harmonics conditions of a non-linear load using particle swarm optimization (PSO). A PSO-based FLC (PSOF) fitness function is also used to optimise and reduce the MSE to enhance the load transfer performance in a short period of time. The PSOF approach eliminates the time-consuming conventional trial-and-error method of deriving membership functions (MFs). Based on the fitness function evaluation findings, the created adaptive MFs are incorporated into voltage error and rate of change of voltage error for input and output. A harmonic filter is used to remove unwanted harmonic components induced by linear and nonlinear loads. To make sure the proposed control system works, the results are looked at both with and without PSO. The obtained transfer times were reduced by about 2ms, 4.35ms, 3.68ms and 3.56ms for 100%, 50%, 25% and 10% respectively, by optimising the fuzzy based system with PSO. Optimisation resulted in a total transfer time of 0.5ms, 8.72ms, 7.88ms and 7.32ms for 100%, 50%, 25% and 10% voltage sag, respectively. The design procedure and accuracy of the developed FLC are illustrated and investigated via simulation tests for the SSTS system. Results show that the optimised fuzzy controller is better than those obtained without the PSO algorithm in all tested cases in terms of transfer time and detection time and harmonic reduction.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124156388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9940064
Chung-Han Lin, Yuan-Kang Wu
With the increasing penetration of renewable energy, power system inertia is reduced; thus, frequency stability faces tremendous challenges. Offshore wind farms (WFs) are often integrated to the grid through a voltage-source-converter-based high-voltage direct current (VSC-HVDC) transmission. However, traditional WFs cannot provide frequency support owing to the decoupling characteristics of VSC-HVDC. Modern WFs may support frequency regulation, but the recovery of rotor speeds of wind turbines (WTs) would cause a considerable second frequency drop (SFD). To resolve these problems, this paper presents a coordinated control strategy for a VSC-HVDC-connected WF with a battery energy storage system (BESS) for providing frequency support. The proposed strategy enhances the synthetic inertia by allowing WFs and BESS to participate in frequency regulation, in which the VSC-HVDC transmission supports frequency regulation by regulating its DC-link voltage, and BESS provides the required power during the rotor-speed recovery of WTs. Thus, SFD can be prevented and frequency deviation is minimized. In this study, the case study that considers the outage of synchronous generator and variable wind-speed scenario was conducted in PSCAD/EMTDC. The simulation results verify the effectiveness and the robustness of the proposed control strategy and demonstrate the superiority of the proposed strategy over other existing strategies.
{"title":"Coordinated Frequency Control Strategy for VSC-HVDC-Connected Wind Farm and Battery Energy Storage System","authors":"Chung-Han Lin, Yuan-Kang Wu","doi":"10.1109/IAS54023.2022.9940064","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940064","url":null,"abstract":"With the increasing penetration of renewable energy, power system inertia is reduced; thus, frequency stability faces tremendous challenges. Offshore wind farms (WFs) are often integrated to the grid through a voltage-source-converter-based high-voltage direct current (VSC-HVDC) transmission. However, traditional WFs cannot provide frequency support owing to the decoupling characteristics of VSC-HVDC. Modern WFs may support frequency regulation, but the recovery of rotor speeds of wind turbines (WTs) would cause a considerable second frequency drop (SFD). To resolve these problems, this paper presents a coordinated control strategy for a VSC-HVDC-connected WF with a battery energy storage system (BESS) for providing frequency support. The proposed strategy enhances the synthetic inertia by allowing WFs and BESS to participate in frequency regulation, in which the VSC-HVDC transmission supports frequency regulation by regulating its DC-link voltage, and BESS provides the required power during the rotor-speed recovery of WTs. Thus, SFD can be prevented and frequency deviation is minimized. In this study, the case study that considers the outage of synchronous generator and variable wind-speed scenario was conducted in PSCAD/EMTDC. The simulation results verify the effectiveness and the robustness of the proposed control strategy and demonstrate the superiority of the proposed strategy over other existing strategies.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130867439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9939943
Haruki Mizushina, Yusuke Fukuta, S. Suyama, Kenji Yamamoto
Instability of depth perception that occurs when the retinal image sizes of left and right eyes are different in stereoscopic display can be improved by coordinating depths specified by motion parallax and binocular stereopsis. Even if the depths specified by motion parallax and binocular disparity do not completely match, the instability of depth perception can be improved by matching the directions of the depths by motion parallax and binocular disparity up to a certain difference.
{"title":"Improvement of perceived depth instability by motion parallax in binocular stereopsis with left-right retinal image mismatch","authors":"Haruki Mizushina, Yusuke Fukuta, S. Suyama, Kenji Yamamoto","doi":"10.1109/IAS54023.2022.9939943","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939943","url":null,"abstract":"Instability of depth perception that occurs when the retinal image sizes of left and right eyes are different in stereoscopic display can be improved by coordinating depths specified by motion parallax and binocular stereopsis. Even if the depths specified by motion parallax and binocular disparity do not completely match, the instability of depth perception can be improved by matching the directions of the depths by motion parallax and binocular disparity up to a certain difference.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131397884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9939681
Devaprasad Paul, A. Goswami
This paper aims at analysing the degradation in the properties of oil parameters such as breakdown voltage (BDV), interfacial Tension (IFT), resistivity, water content, dielectric loss tangent and total gas content due to ageing of transformer and reactors. For ensuring long term reliability of transformer and reactor it is necessary to ascertain the degradation characteristics of the insulating oil along with its impact on the healthiness of the equipment. The data considered comprises of real time oil test data of more than 500 samples of in-service transformer and reactors having age greater than 20 years. From the study BDV, IFT and Resistivity are found to be negatively correlated with ageing whereas water content, dielectric loss tangent and total gas content are found positively related with the ageing of equipments. The outcome of this study can be used as an effective index for monitoring the deteriorating characteristics of the oil filled transformer and reactor due to ageing.
{"title":"Influence of Ageing on Properties of Insulating Oil in In-Service Transformer and Reactors","authors":"Devaprasad Paul, A. Goswami","doi":"10.1109/IAS54023.2022.9939681","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939681","url":null,"abstract":"This paper aims at analysing the degradation in the properties of oil parameters such as breakdown voltage (BDV), interfacial Tension (IFT), resistivity, water content, dielectric loss tangent and total gas content due to ageing of transformer and reactors. For ensuring long term reliability of transformer and reactor it is necessary to ascertain the degradation characteristics of the insulating oil along with its impact on the healthiness of the equipment. The data considered comprises of real time oil test data of more than 500 samples of in-service transformer and reactors having age greater than 20 years. From the study BDV, IFT and Resistivity are found to be negatively correlated with ageing whereas water content, dielectric loss tangent and total gas content are found positively related with the ageing of equipments. The outcome of this study can be used as an effective index for monitoring the deteriorating characteristics of the oil filled transformer and reactor due to ageing.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114542345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9939964
Peyman Alavi, N. Chaudhuri
In this article, an extendable high step-up DC-DC converter is proposed and investigated. The topology of the proposed converter is simple, and despite other similar structures, this converter does not implement switched-capacitor (SC) cells, switched-inductor (SI) cells, diode-capacitor-inductor (DCL) cells, or coupled inductors to enhance the voltage gain. In addition to the simple topology of the proposed converter, its high voltage-gain and reduced voltage stresses across the elements can be listed as the main advantages of this structure. In this paper, the proposed extendable high step-up converter is explained, and its operational modes are investigated comprehensively. The voltage stress across different elements and the voltage gain of the proposed converter are obtained. In addition, a 2-stage model of the proposed converter is designed for efficiency investigation and compared to other similar topologies. Finally, the designed 2-stage (25-400V, 500W) model of the proposed converter is simulated in PSCAD/EMTC environment to verify the theoretical analysis.
{"title":"Analysis and Investigation of a Simple and Extendable DC-DC Converter to Obtain High Voltage-Gain for Renewable Energy Applications","authors":"Peyman Alavi, N. Chaudhuri","doi":"10.1109/IAS54023.2022.9939964","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939964","url":null,"abstract":"In this article, an extendable high step-up DC-DC converter is proposed and investigated. The topology of the proposed converter is simple, and despite other similar structures, this converter does not implement switched-capacitor (SC) cells, switched-inductor (SI) cells, diode-capacitor-inductor (DCL) cells, or coupled inductors to enhance the voltage gain. In addition to the simple topology of the proposed converter, its high voltage-gain and reduced voltage stresses across the elements can be listed as the main advantages of this structure. In this paper, the proposed extendable high step-up converter is explained, and its operational modes are investigated comprehensively. The voltage stress across different elements and the voltage gain of the proposed converter are obtained. In addition, a 2-stage model of the proposed converter is designed for efficiency investigation and compared to other similar topologies. Finally, the designed 2-stage (25-400V, 500W) model of the proposed converter is simulated in PSCAD/EMTC environment to verify the theoretical analysis.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116831420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9940055
M. Al-Badri, Emma Beeler, Alexis Francisco
American standards like ANSI/NEMA MG 1 and IEEE Std 112 recommend test procedures for determination of polyphase induction machine losses which may be used for loss segregation and/or efficiency evaluation. All procedures described in those standards require balanced sinusoidal voltages, which can only be achieved in well-equipped laboratories. In real industrial environments, a balanced sinusoidal power supply is impossible. Thus, tests are generally conducted with a certain level of voltage unbalance and harmonic pollutions without any knowledge of how test accuracies are affected. This research work investigates the impact of voltage unbalance on the accuracy of the friction and windage loss, and core loss evaluations based on the IEEE Std 112 no-load test procedure. The impact is demonstrated and quantified by testing a 60 Hz, inverter-duty, premium efficiency, 3 hp induction motor under balanced voltages and with voltage unbalance in the range of 0.5%-5%. The objective of this technical paper is to update the current IEEE Std 112 with the findings of this research work.
{"title":"Impact of Voltage Unbalance on Application of IEEE Std 112 Test Procedure in North American Electric Motor Service Centers","authors":"M. Al-Badri, Emma Beeler, Alexis Francisco","doi":"10.1109/IAS54023.2022.9940055","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940055","url":null,"abstract":"American standards like ANSI/NEMA MG 1 and IEEE Std 112 recommend test procedures for determination of polyphase induction machine losses which may be used for loss segregation and/or efficiency evaluation. All procedures described in those standards require balanced sinusoidal voltages, which can only be achieved in well-equipped laboratories. In real industrial environments, a balanced sinusoidal power supply is impossible. Thus, tests are generally conducted with a certain level of voltage unbalance and harmonic pollutions without any knowledge of how test accuracies are affected. This research work investigates the impact of voltage unbalance on the accuracy of the friction and windage loss, and core loss evaluations based on the IEEE Std 112 no-load test procedure. The impact is demonstrated and quantified by testing a 60 Hz, inverter-duty, premium efficiency, 3 hp induction motor under balanced voltages and with voltage unbalance in the range of 0.5%-5%. The objective of this technical paper is to update the current IEEE Std 112 with the findings of this research work.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116844163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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