Pub Date : 2022-10-09DOI: 10.1109/IAS54023.2022.9940136
A. Zeghoudi, A. Bendaoud, A. Tilmatine, M. Miloudi, H. Miloudi, L. Canale
The light-emitting diode (LED) lamp has been widely used in Algeria in recent years for a lighting system because of its low power consumption and high efficiency. However, LED lamps are nonlinear loads that cause harmonic distortion and electromagnetic interference in the power system. In this study, the experimental measurements of 4 LEDs Lamps sold in the Algerian market, the first is a good quality local lamp and the second is an Asian lamp of average quality and cheap with powers of 12 W, 13 W, 15 W. We used these lamps in order to measure the rate of harmonic distortion and the electromagnetic interference in common mode and differential mode. The aim of this work is to quantify the impact of variation the power and the brand of LED lamp on the THD and the power factor K at low frequency and also, electromagnetic interference in common and differential mode at high frequency.
{"title":"Experimental Measurement of Harmonic Distortion and Electromagnetic Interferences For LED Lamps","authors":"A. Zeghoudi, A. Bendaoud, A. Tilmatine, M. Miloudi, H. Miloudi, L. Canale","doi":"10.1109/IAS54023.2022.9940136","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940136","url":null,"abstract":"The light-emitting diode (LED) lamp has been widely used in Algeria in recent years for a lighting system because of its low power consumption and high efficiency. However, LED lamps are nonlinear loads that cause harmonic distortion and electromagnetic interference in the power system. In this study, the experimental measurements of 4 LEDs Lamps sold in the Algerian market, the first is a good quality local lamp and the second is an Asian lamp of average quality and cheap with powers of 12 W, 13 W, 15 W. We used these lamps in order to measure the rate of harmonic distortion and the electromagnetic interference in common mode and differential mode. The aim of this work is to quantify the impact of variation the power and the brand of LED lamp on the THD and the power factor K at low frequency and also, electromagnetic interference in common and differential mode at high frequency.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"2015 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":"127731488","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/IAS54023.2022.9940137
G. Parise, G. Zissis, Larissa Paredes Muse
This paper is intended as a first basic document of a more general white paper on smart lighting. Distributed Artificial Lighting systems penetrate into the internal and external human environment in a complete osmosis and with their smart interactive function practically become an all-seeing eye, a “big eye”, of human activities. Smart lighting indoor and more especially outdoor constitutes a mesh (“web”) that is able to detect, memorize, identify and communicate. Smart lighting included in an $mathbf{IoT}$ system is extending its performances to multiple purposes in addition to the sole function of lighting, but safeguarding environmental lighting problems, safety, security and ethical-social impacts.
{"title":"The Big Eye of Smart Lighting","authors":"G. Parise, G. Zissis, Larissa Paredes Muse","doi":"10.1109/IAS54023.2022.9940137","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940137","url":null,"abstract":"This paper is intended as a first basic document of a more general white paper on smart lighting. Distributed Artificial Lighting systems penetrate into the internal and external human environment in a complete osmosis and with their smart interactive function practically become an all-seeing eye, a “big eye”, of human activities. Smart lighting indoor and more especially outdoor constitutes a mesh (“web”) that is able to detect, memorize, identify and communicate. Smart lighting included in an $mathbf{IoT}$ system is extending its performances to multiple purposes in addition to the sole function of lighting, but safeguarding environmental lighting problems, safety, security and ethical-social impacts.","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":"133695264","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/IAS54023.2022.9940084
K. Muttaqi, M. T. Hagh, Thomas Creek, Maher G. M. Abdolrasol, M. S. Hossain Lipu, M. Hannan
This paper proposes a method for battery storage and supercapacitor (SC) hybrid operation toward improving EVs' performance. The adopted concept is established to regulate the level of charge for the SC to suit the immediate storage needs of the EV in such a way as to couple both storage devices. The results demonstrate that the current drawn from the battery has significantly reduced the discharging rate of the battery smoothed out compared to the EV without the SC. Also, the electric vehicle (EV) battery capacity is improved and the implementation of an SC eliminates the abrupt discharge of state of charge (SoC). The SC supports the EV by providing the necessary power when required. The simulation results demonstrate the contribution of SC to improving the battery performance and the reduction in discharging rate. The battery cannot be disconnected, while the SC could be, and power can be exchanged via supercapacitor. The SC is faster than the battery to maintain the optimum SoC level during the tested time (20 sec) at a level of approximately 50%. The obtained results indicate the charging of the SC during the acceleration only. By enhancing the EV stores and transferring its power flows using the proposed hybrid storage system, a more efficient EV can be developed to reduce the frequency of EV battery charging.
{"title":"Hybrid Operation of Super-Capacitor and Battery Storage to Improve Electric Vehicles Performances","authors":"K. Muttaqi, M. T. Hagh, Thomas Creek, Maher G. M. Abdolrasol, M. S. Hossain Lipu, M. Hannan","doi":"10.1109/IAS54023.2022.9940084","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940084","url":null,"abstract":"This paper proposes a method for battery storage and supercapacitor (SC) hybrid operation toward improving EVs' performance. The adopted concept is established to regulate the level of charge for the SC to suit the immediate storage needs of the EV in such a way as to couple both storage devices. The results demonstrate that the current drawn from the battery has significantly reduced the discharging rate of the battery smoothed out compared to the EV without the SC. Also, the electric vehicle (EV) battery capacity is improved and the implementation of an SC eliminates the abrupt discharge of state of charge (SoC). The SC supports the EV by providing the necessary power when required. The simulation results demonstrate the contribution of SC to improving the battery performance and the reduction in discharging rate. The battery cannot be disconnected, while the SC could be, and power can be exchanged via supercapacitor. The SC is faster than the battery to maintain the optimum SoC level during the tested time (20 sec) at a level of approximately 50%. The obtained results indicate the charging of the SC during the acceleration only. By enhancing the EV stores and transferring its power flows using the proposed hybrid storage system, a more efficient EV can be developed to reduce the frequency of EV battery charging.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"39 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":"131886664","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/IAS54023.2022.9939978
C. Moscatiello, Riccardo Loggia, Gianfranco Di Lorenzo, A. Palma, M. Kermani, R. Faranda, E. Tironi, F. Oliva, R. Araneo, L. Martirano
In recent years the development of the LVDC distribution networks is under consideration. DC electrical distribution offers several advantages compared to AC in many applications, in particular in the presence of distributed generation and energy storage systems like high efficacy, flexibility and simple integrated to renewable sources. The DC distribution allows to integrate in a more efficient “microgrid” different sources with DC/DC converters. The paper proposes an innovative model of microgrid architecture for aggregations of users able to share the power produced by common generators and energy services called power sharing model (PSM) using a DC bus, called power sharing link (PSL), that connects the common generators to the users. Each user has also an independent AC connection point with the distributor and a power electronic converter as Open Unified Power Quality Conditioner (Open UPQC), so PSM can be easily implemented in special power sharing contracts compliant with national regulatory systems. The produced energy is shared by PSL to the users through unidirectional power electronic device. In this way the common generator is like a multiple generator without power exchange between users and each user remain passive towards the distributor. Only the balance node of the DC bus assumes a role of active user.
{"title":"LVDC Microgrids for Power Sharing in Energy Community","authors":"C. Moscatiello, Riccardo Loggia, Gianfranco Di Lorenzo, A. Palma, M. Kermani, R. Faranda, E. Tironi, F. Oliva, R. Araneo, L. Martirano","doi":"10.1109/IAS54023.2022.9939978","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939978","url":null,"abstract":"In recent years the development of the LVDC distribution networks is under consideration. DC electrical distribution offers several advantages compared to AC in many applications, in particular in the presence of distributed generation and energy storage systems like high efficacy, flexibility and simple integrated to renewable sources. The DC distribution allows to integrate in a more efficient “microgrid” different sources with DC/DC converters. The paper proposes an innovative model of microgrid architecture for aggregations of users able to share the power produced by common generators and energy services called power sharing model (PSM) using a DC bus, called power sharing link (PSL), that connects the common generators to the users. Each user has also an independent AC connection point with the distributor and a power electronic converter as Open Unified Power Quality Conditioner (Open UPQC), so PSM can be easily implemented in special power sharing contracts compliant with national regulatory systems. The produced energy is shared by PSL to the users through unidirectional power electronic device. In this way the common generator is like a multiple generator without power exchange between users and each user remain passive towards the distributor. Only the balance node of the DC bus assumes a role of active user.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"68 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131991962","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/IAS54023.2022.9940134
Vijay Mohale, T. Chelliah, Y. V. Hote
The extra high voltage transmission line 765kV, the most cost-effective and widely used method for increasing the power transfer capability of long transmission lines is to employ series capacitive compensation. A doubly fed induction machine (DFIM) connected to series compensation for variable speed pumped storage plant prone to sub-synchronous oscillation (SSO). However, SSO is a significant problem that can cause electrical instability and generator shaft failure. This research discusses the use of RSC and GSC to increase power system stability. The proposed strategy of rotor side damping controller (RSDC) to improving power system stability is being developed and evaluated in preparation for the variable speed pumped storage hydropower plant. The main motive of this paper is modeling and to investigate sub-synchronous oscillations caused by series compensation in a transmission line connected to a DFIM hydro unit. The simulation is carried out and results are validated in MATLAB/Simulink environment to analyze SSO in case of different series compensation levels. The experimental validation is obtained in the laboratory on a scale down model.
{"title":"Modeling and Analysis of Sub-Synchronous Oscillation in Large Rated DFIM Based Hydro Unit Fed to Extra High Voltage Transmission Lines","authors":"Vijay Mohale, T. Chelliah, Y. V. Hote","doi":"10.1109/IAS54023.2022.9940134","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940134","url":null,"abstract":"The extra high voltage transmission line 765kV, the most cost-effective and widely used method for increasing the power transfer capability of long transmission lines is to employ series capacitive compensation. A doubly fed induction machine (DFIM) connected to series compensation for variable speed pumped storage plant prone to sub-synchronous oscillation (SSO). However, SSO is a significant problem that can cause electrical instability and generator shaft failure. This research discusses the use of RSC and GSC to increase power system stability. The proposed strategy of rotor side damping controller (RSDC) to improving power system stability is being developed and evaluated in preparation for the variable speed pumped storage hydropower plant. The main motive of this paper is modeling and to investigate sub-synchronous oscillations caused by series compensation in a transmission line connected to a DFIM hydro unit. The simulation is carried out and results are validated in MATLAB/Simulink environment to analyze SSO in case of different series compensation levels. The experimental validation is obtained in the laboratory on a scale down model.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"260 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":"115816922","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/IAS54023.2022.9940132
S. Rangarajan, V. Agarwal
The tuning of closed loop controller parameters is a cumbersome process in traction elevator systems because the motor and the load are not directly connected but rather through metallic ropes having finite elasticity. In such systems, it is beneficial to do v/f based speed control as it is an open loop speed control technique. However, unlike induction motor systems, the v/f control of Permanent Magnet Synchronous Motor (PMSM) driven elevator system may go unstable due to lack of damping torque. The conventional active damping techniques available for v/f controlled PMSM drives may not ensure stability for elevators as they do not consider the dynamics of load torque. To resolve this issue, in this paper, a novel active damping scheme has been proposed in which the stator frequency of the PMSM is modulated in proportion to the perturbations in the accelerating torque of the rotor and the speed error. The proposed scheme involves offline tuning of only two control gains to stabilize the system, minimize the vibrations and achieve reference trajectory tracking. The performance of the proposed control scheme has been validated through MATLAB simulations. The experimental validation is underway and those results will be presented in the future paper.
{"title":"Novel Active Damping Scheme to Stabilize and Enhance the Performance of v/f Controlled Permanent Magnet Synchronous Motor Driven Passenger Elevator System","authors":"S. Rangarajan, V. Agarwal","doi":"10.1109/IAS54023.2022.9940132","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940132","url":null,"abstract":"The tuning of closed loop controller parameters is a cumbersome process in traction elevator systems because the motor and the load are not directly connected but rather through metallic ropes having finite elasticity. In such systems, it is beneficial to do v/f based speed control as it is an open loop speed control technique. However, unlike induction motor systems, the v/f control of Permanent Magnet Synchronous Motor (PMSM) driven elevator system may go unstable due to lack of damping torque. The conventional active damping techniques available for v/f controlled PMSM drives may not ensure stability for elevators as they do not consider the dynamics of load torque. To resolve this issue, in this paper, a novel active damping scheme has been proposed in which the stator frequency of the PMSM is modulated in proportion to the perturbations in the accelerating torque of the rotor and the speed error. The proposed scheme involves offline tuning of only two control gains to stabilize the system, minimize the vibrations and achieve reference trajectory tracking. The performance of the proposed control scheme has been validated through MATLAB simulations. The experimental validation is underway and those results will be presented in the future paper.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"9 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":"123153957","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/IAS54023.2022.9939897
Yazdan H. Tabrizi, M. Uddin, Hesamodin Allahyari
This paper presents a novel high voltage pulse power generator layout that is well suited to dielectric barrier discharge applications. To reach the higher gain, a push-pull circuit with a three-winding transformer is used on the charging side, along with quasi-resonant between the transformer leakage inductance and the capacitor on the high-voltage section. The primary side's two windings and two low voltage switches allow the gadget to generate either unipolar or bipolar high voltage exponential pulses from an approximately low DC source. Instead of a bidirectional switch, a magnet one is employed since it eliminates the concerns of series and parallel connections of semiconductor switches in high voltage side, resulting in a low degree of switching complexity. Hence, In addition to accomplishing the high gain objective, the effort focuses on lowering the number of circuit elements and control complexity in contrast to previous topologies. The generator operates in discontinuous conduction mode, which improves the system efficiency by allowing for the generation of full positive and/or negative waves while it also reduces the conduction losses. The operation phases of the pulse generator are detailed. It is found from the simulation results that the proposed pulse generator outperforms the previous structures in terms of control complexity, number of switches, and flexibility.
{"title":"A Solid-State Pulse Power Generator Employed Magnet Switch for Dielectric Barrier Discharge Applications Based on Resonance Charging Concept","authors":"Yazdan H. Tabrizi, M. Uddin, Hesamodin Allahyari","doi":"10.1109/IAS54023.2022.9939897","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939897","url":null,"abstract":"This paper presents a novel high voltage pulse power generator layout that is well suited to dielectric barrier discharge applications. To reach the higher gain, a push-pull circuit with a three-winding transformer is used on the charging side, along with quasi-resonant between the transformer leakage inductance and the capacitor on the high-voltage section. The primary side's two windings and two low voltage switches allow the gadget to generate either unipolar or bipolar high voltage exponential pulses from an approximately low DC source. Instead of a bidirectional switch, a magnet one is employed since it eliminates the concerns of series and parallel connections of semiconductor switches in high voltage side, resulting in a low degree of switching complexity. Hence, In addition to accomplishing the high gain objective, the effort focuses on lowering the number of circuit elements and control complexity in contrast to previous topologies. The generator operates in discontinuous conduction mode, which improves the system efficiency by allowing for the generation of full positive and/or negative waves while it also reduces the conduction losses. The operation phases of the pulse generator are detailed. It is found from the simulation results that the proposed pulse generator outperforms the previous structures in terms of control complexity, number of switches, and flexibility.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"AES-18 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132502253","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/IAS54023.2022.9939942
Aravind Ingalalli, S. Kamalasadan, Zerui Dong, G. Bharati, S. Chakraborty
Large-scale integration of distributed energy resources (DER) in the power distribution grid leads to the possible operation of multiple microgrids (MG). DER management system (DERMS) is responsible for the optimal network configuration, dispatch of DERs, and providing appropriate set-points for the DERs. The network of multiple MGs needs to be reconfigured dynamically when extreme events occur in the distribution grid. Reinforcement learning methods are used in various optimal energy management, and dispatch of DERs. Q-routing is a reinforcement learning-based method to discover the optimal path between source and destination nodes. Since in networked MGs, each MG can have multiple boundaries, the Q-routing algorithm is enhanced with a reward mechanism depending on the events in the distribution grid. In this paper, extended Q-routing-based dynamic reconfiguration of a networked MG is proposed including the event-driven TCP/IP communication. Real-time results validate the effectiveness of the proposed framework for various reconfiguration test cases.
{"title":"An Extended Q-Routing-based Event-driven Dynamic Reconfiguration of Networked Microgrids","authors":"Aravind Ingalalli, S. Kamalasadan, Zerui Dong, G. Bharati, S. Chakraborty","doi":"10.1109/IAS54023.2022.9939942","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939942","url":null,"abstract":"Large-scale integration of distributed energy resources (DER) in the power distribution grid leads to the possible operation of multiple microgrids (MG). DER management system (DERMS) is responsible for the optimal network configuration, dispatch of DERs, and providing appropriate set-points for the DERs. The network of multiple MGs needs to be reconfigured dynamically when extreme events occur in the distribution grid. Reinforcement learning methods are used in various optimal energy management, and dispatch of DERs. Q-routing is a reinforcement learning-based method to discover the optimal path between source and destination nodes. Since in networked MGs, each MG can have multiple boundaries, the Q-routing algorithm is enhanced with a reward mechanism depending on the events in the distribution grid. In this paper, extended Q-routing-based dynamic reconfiguration of a networked MG is proposed including the event-driven TCP/IP communication. Real-time results validate the effectiveness of the proposed framework for various reconfiguration test cases.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"102 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":"129074649","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/IAS54023.2022.9940142
Md Isfakul Anam, Thai-Thanh Nguyen, T. Vu
This research presents a risk-based energy management system (EMS) for an islanded microgrid, considering each system component's probability of failure (PoF). A scenario-based optimization method has been used to include uncertain events in the problem formulation. The loads are categorized as critical, semi-critical, or noncritical to prioritize supplying the crucial loads when the microgrid's generation is insufficient to meet the load demand. Additionally, the nonlinear power flow equation has been transformed into convex equations, cutting down the computational time. Then the proposed method is applied to the modified IEEE-14 bus system. The result showed that the risk-based EMS reduced the amount of load served than a normal EMS, depending on the PoF of each system component. In addition, the EMS served critical loads first, then semi-critical loads, and practically curtailed all non-critical loads to match the generation and the demand. This successive load curtailment increases the microgrid's likelihood of survival in the islanded mode.
{"title":"An Energy Management System for Enhancing Resiliency of Microgrids Considering Uncertain Events","authors":"Md Isfakul Anam, Thai-Thanh Nguyen, T. Vu","doi":"10.1109/IAS54023.2022.9940142","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9940142","url":null,"abstract":"This research presents a risk-based energy management system (EMS) for an islanded microgrid, considering each system component's probability of failure (PoF). A scenario-based optimization method has been used to include uncertain events in the problem formulation. The loads are categorized as critical, semi-critical, or noncritical to prioritize supplying the crucial loads when the microgrid's generation is insufficient to meet the load demand. Additionally, the nonlinear power flow equation has been transformed into convex equations, cutting down the computational time. Then the proposed method is applied to the modified IEEE-14 bus system. The result showed that the risk-based EMS reduced the amount of load served than a normal EMS, depending on the PoF of each system component. In addition, the EMS served critical loads first, then semi-critical loads, and practically curtailed all non-critical loads to match the generation and the demand. This successive load curtailment increases the microgrid's likelihood of survival in the islanded mode.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"10 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":"133517579","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/IAS54023.2022.9939910
S. Saleh
This paper develops and tests a method for balancing capacitor voltages in 7-level flying-capacitor (FC) inverters, which are operated by the wavelet modulation (WM) technique. This multi-level inverter has two capacitors in each pole, whose voltages deviate due to changes in its loading level. In order to ensure that all switching elements experience identical voltage stresses and no circulating currents, the voltage across each capacitor has to be maintained very close to its reference value. The proposed method to balance the capacitor voltage is based on adjusting the scales of resolution segmented wavelet basis functions, which are used as switching signals to operate a 7-level FC inverter. The adjustments of the scales can vary the widths and locations of switching pulses produced by the WM technique. The proposed capacitor voltage method is structured using a proportional-integral controller to adjust the scales, thus balancing the capacitor voltages. The accuracy, effectiveness, and response speed of the proposed method to balance capacitor voltage are demonstrated through simulation and experimental test cases.
{"title":"Balancing Capacitor Voltages in 7-Level Single Phase Flying-Capacitor Wavelet Modulated Inverters","authors":"S. Saleh","doi":"10.1109/IAS54023.2022.9939910","DOIUrl":"https://doi.org/10.1109/IAS54023.2022.9939910","url":null,"abstract":"This paper develops and tests a method for balancing capacitor voltages in 7-level flying-capacitor (FC) inverters, which are operated by the wavelet modulation (WM) technique. This multi-level inverter has two capacitors in each pole, whose voltages deviate due to changes in its loading level. In order to ensure that all switching elements experience identical voltage stresses and no circulating currents, the voltage across each capacitor has to be maintained very close to its reference value. The proposed method to balance the capacitor voltage is based on adjusting the scales of resolution segmented wavelet basis functions, which are used as switching signals to operate a 7-level FC inverter. The adjustments of the scales can vary the widths and locations of switching pulses produced by the WM technique. The proposed capacitor voltage method is structured using a proportional-integral controller to adjust the scales, thus balancing the capacitor voltages. The accuracy, effectiveness, and response speed of the proposed method to balance capacitor voltage are demonstrated through simulation and experimental test cases.","PeriodicalId":193587,"journal":{"name":"2022 IEEE Industry Applications Society Annual Meeting (IAS)","volume":"2011 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":"133243219","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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