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PV Inverter Control Algorithm Using Reinforcement Learning to Mitigate the Duck Curve Problem 利用强化学习缓解鸭子曲线问题的光伏逆变器控制算法
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131475
Yu-Quan Chen, I. Jiang, Katherine A. Kim
{"title":"PV Inverter Control Algorithm Using Reinforcement Learning to Mitigate the Duck Curve Problem","authors":"Yu-Quan Chen, I. Jiang, Katherine A. Kim","doi":"10.1109/APEC43580.2023.10131475","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131475","url":null,"abstract":"As more solar photovoltaic (PV) systems are installed around the world, the fact that power consumption and solar generation profiles do not synchronize leads to a problem called the duck curve. As PV penetration increases, the problem is exacerbated due to an increasing ramp rate that adds strain to the electricity grid. Another challenge is that the power profiles vary considerably by day and by season. We propose a system control algorithm using reinforcement learning for a battery-integrated PV converter system that works in real-time, is dynamic, and is adaptive. Results show a good balance among four objectives, which are verified by real data sets from Taiwan and Germany.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130956194","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}
引用次数: 0
DC Series ARC Fault Detection and Extinguishing Method Using Input Capacitor Design 基于输入电容设计的直流系列电弧故障检测与灭火方法
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131214
Hwa-Pyeong Park, Mina Kim, S. Chae
{"title":"DC Series ARC Fault Detection and Extinguishing Method Using Input Capacitor Design","authors":"Hwa-Pyeong Park, Mina Kim, S. Chae","doi":"10.1109/APEC43580.2023.10131214","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131214","url":null,"abstract":"The DC optimizer can achieve the maximum power generation for each PV panel. However, it increases possibility of arc fault between PV panel and DC optimizer. Therefore, this paper proposes a detecting method for DC series arc fault between PV panel and optimizer with an input capacitor design. The proposed method utilizes the input current of DC optimizer that eliminates the need for additional arc fault detection devices between panel and DC optimizer. The effectiveness of input capacitor design and fault detection algorithm are analyzed with operational principle. The experimental results verify the validity of proposed method.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131586015","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}
引用次数: 0
Controllable Built-in Leakage Inductance for A Novel Matrix Integrated Transformer 一种新型矩阵集成变压器的可控内置漏感
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131277
Feng Jin, Zheqing Li, Ahmed Nabih, Qiang Li
{"title":"Controllable Built-in Leakage Inductance for A Novel Matrix Integrated Transformer","authors":"Feng Jin, Zheqing Li, Ahmed Nabih, Qiang Li","doi":"10.1109/APEC43580.2023.10131277","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131277","url":null,"abstract":"Integrated transformer with built-in leakage inductors is a good approach for simplifying the whole system, as it integrates leakage inductors into the transformer with printed circuit board (PCB) windings for CLLC resonant converter. A novel matrix integrated transformer with adjustable built-in leakage inductance is proposed in this paper. The built-in leakage inductance can be controlled by adjusting the winding arrangement of primary and secondary windings or adjusting the reluctance of each core leg, which changes the coupling between primary and secondary windings. Inductance measurements of integrated transformers with different winding arrangements and air gaps of cores are implemented to verify the proposed two methods. The novel matrix integrated transformer was demonstrated on a 500kHz 11kW single-phase CLLC resonant converter for onboard charger application with 0.14% efficiency improvement at full load compared with the original design.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129251400","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}
引用次数: 0
Investigation on Physical Origins of Output Capacitance Loss in Cascode GaN HEMTs 级联GaN hemt输出电容损耗的物理根源研究
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131161
Q. Song, Ruizhe Zhang, Qiang Li, Yuhao Zhang
{"title":"Investigation on Physical Origins of Output Capacitance Loss in Cascode GaN HEMTs","authors":"Q. Song, Ruizhe Zhang, Qiang Li, Yuhao Zhang","doi":"10.1109/APEC43580.2023.10131161","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131161","url":null,"abstract":"Output capacitance loss is generated when the output capacitor of a power device is charged and discharged in its OFF state, which ideally should be a lossless process. This loss information is not included in the device datasheet but is crucial for device applications. Some recent work has revealed significant EDISS in GaN high-electron-mobility transistors (HEMTs), which compromise their performance in high-frequency soft-switching converters. Among various GaN devices, the cascode GaN HEMT was reported to show the largest EDISS, but its physical origin is unknown. This work investigates several possible physical origins such as the EDISS of GaN HEMT and the Si avalanche loss. The EDISS of two cascode GaN HEMTs, one with and the other without an additional capacitor in parallel with the Si MOSFET, are characterized. Three components of EDISS in cascode GaN HEMTs are quantitatively separated: a) Si avalanche loss, b) GaN HEMT's inherent EDISS, and c) additional loss due to the interaction between Si MOSFET and GaN HEMT when the Si MOSFET avalanches. At high voltage, component c) is revealed to dominate. By eliminating the Si avalanche, the EDISS of cascode GaN HEMTs can be reduced by up to 75%. These results provide new physical insights and manifest an effective way to reduce EDISS in casco de GaN HEMTs, which significantly boost its performance in soft- switching applications.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128832205","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}
引用次数: 0
Phase Shifted Power Control Strategy for Efficiency Improvement at Medium Power Region in Induction Cooktops Using Full-Bridge Series-Resonant Inverters 采用全桥串联谐振逆变器提高感应灶具中功率区效率的相移功率控制策略
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131576
Yun Seong Hwang, Joo Seung Lee, S. H. Kang, Man Jae Kwon, Eunsu Jang, B. Lee
{"title":"Phase Shifted Power Control Strategy for Efficiency Improvement at Medium Power Region in Induction Cooktops Using Full-Bridge Series-Resonant Inverters","authors":"Yun Seong Hwang, Joo Seung Lee, S. H. Kang, Man Jae Kwon, Eunsu Jang, B. Lee","doi":"10.1109/APEC43580.2023.10131576","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131576","url":null,"abstract":"This paper proposes a phase shift power control method (PSCM) as an additional power control strategy for induction heating (IH) cooktops. When frequency power control method (FCM) is applied for IH cooktops using full-bridge series resonant inverter (FB-SRI), the switching loss of inverter increases since the switching frequency range becomes wider. By applying PSCM, losses from power conversion system (PCS) can be reduced which leads to higher system efficiency up to 1.5% at medium power region. To verify the validity of the proposed strategy, losses and efficiency analysis are performed through simulation with mathematical approach. In addition, the feasibility of the proposed strategy is verified by experimental results.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123260837","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}
引用次数: 0
Mode Switching of H-bridge Time-sharing Multiplexing h桥分时复用的模式切换
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131152
Chong Zhao, Chunpeng Zhang, Qirong Jiang
{"title":"Mode Switching of H-bridge Time-sharing Multiplexing","authors":"Chong Zhao, Chunpeng Zhang, Qirong Jiang","doi":"10.1109/APEC43580.2023.10131152","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131152","url":null,"abstract":"This work tends to solve a practical concern of the H-bridge time-sharing multiplexing proposed in [1], that is the high-fidelity mode switching between the line-frequency and the high-frequency power transmission in a single unipolar SPWM cycle. The deficiency of a closed-loop approach based on the hysteretic control is first analyzed, followed by a novel open-loop approach featured by the setting charge-discharge of blocking capacitors using LC-resonance. The resonance angle calculation considering dead-time compensation is detailed discussed, and the practical pulse number choice is also recommended. Furthermore, the experimental result verifies the principle and feasibility of mode switching, and it lays a foundation for constructing future high-density power electronic transformers.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126420956","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}
引用次数: 0
Hybrid Lithium Capacitor Voltage Balancing with Planar Power Inductor for Electric Vehicles and Other Applications 混合锂电容器电压平衡与平面功率电感在电动汽车和其他应用
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131569
M. Al‐Smadi, J. A. Abu Qahouq
{"title":"Hybrid Lithium Capacitor Voltage Balancing with Planar Power Inductor for Electric Vehicles and Other Applications","authors":"M. Al‐Smadi, J. A. Abu Qahouq","doi":"10.1109/APEC43580.2023.10131569","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131569","url":null,"abstract":"This paper presents an evaluation for hybrid lithium-ion capacitor (LiC) balancing topology with low-profile planar power inductor design. The inverting buck-boost topology can be used to transfer charges through the inductor in both directions between LiC cells connected in series to equalize their voltage values. In this paper, the balancing topology, its principle of operation, and planar power inductor design are discussed. A set of experimental results obtained from a laboratory prototype is presented and used to evaluate the topology operation.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121436564","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}
引用次数: 0
Equilibrating Winding Currents in a DC Transformer for Future Electric Transport Application based on Inductive Power Transfer 基于感应功率传输的直流变压器绕组电流平衡技术
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131270
M. A. Moya, A. Delgado, M. Vasić
{"title":"Equilibrating Winding Currents in a DC Transformer for Future Electric Transport Application based on Inductive Power Transfer","authors":"M. A. Moya, A. Delgado, M. Vasić","doi":"10.1109/APEC43580.2023.10131270","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131270","url":null,"abstract":"Due to the large currents circulating through the inductive link that act as a transformer in DC Transformer application, it is needed to design it using parallel litz-wire conductors to reduce the power losses. A problem of unbalanced currents arises because of not optimum winding techniques and not uniform flux distribution among the windings. In this work, we have analyzed this problem by conducting FE simulation and we propose a methodology to solve the detected problem, verified and validated using FE tools and experimental results. With the implemented improvement, we can reduce the current unbalance in the high current windings up to 50%, increasing the overall efficiency up to 2%. All the experiments were done with a 17 kW prototype that converts 2.4 kV to 200 V with an efficiency of 95%.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122969282","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}
引用次数: 0
Enhanced Model Predictive Nearest Level Control for 5-Level Flying Capacitor Multilevel Converter, Hardware Implementation and Comparison 5电平飞容多电平变换器的增强模型预测最接近电平控制、硬件实现与比较
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131130
Armin Ebrahimian, S. I. Hosseini S., W. Khan, N. Weise
{"title":"Enhanced Model Predictive Nearest Level Control for 5-Level Flying Capacitor Multilevel Converter, Hardware Implementation and Comparison","authors":"Armin Ebrahimian, S. I. Hosseini S., W. Khan, N. Weise","doi":"10.1109/APEC43580.2023.10131130","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131130","url":null,"abstract":"Model predictive control (MPC) as a nonlinear control method, is being studied for a wide variety of power electronics applications targeting various power ranges. The fast dynamic response, robustness under different load conditions, multi-objective control, and simplicity of implementation are the main features of MPC. However, the implementation of finite control set MPC (FCS-MPC) or direct MPC in its basic form for multilevel converters (MLCs) demonstrates the inability to generate the staircase multilevel output voltage waveform in a voltage sourced inverter (VSI) application. Adding a reference evaluation block to the basic FCS-MPC method can significantly improve its multilevel voltage generation capability. In this paper, an enhanced model predictive nearest level control (EMP-NLC) is proposed and implemented on a 5-Level flying capacitor multilevel converter (FCMC). The proposed method is simulated under different load conditions, while a comparison against existing MPC techniques is also presented. Experimental results verified the efficacy of the proposed controller.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114122269","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}
引用次数: 0
Direct Digital Control and Capacitor Current Compensation to Improve Grid-Current Distortion for Three-Phase Three-Wire LCL Grid-Connected Inverter Under Distorted Grid Voltages 电网电压畸变下三相三线LCL并网逆变器直接数字控制与电容电流补偿改善电网电流畸变
2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI: 10.1109/APEC43580.2023.10131457
Tsai-Fu Wu, Yung-Hsiang Chang, Jui-Yang Chiu, Chien-Chih Hung, Tzu-Hsien Chuang
{"title":"Direct Digital Control and Capacitor Current Compensation to Improve Grid-Current Distortion for Three-Phase Three-Wire LCL Grid-Connected Inverter Under Distorted Grid Voltages","authors":"Tsai-Fu Wu, Yung-Hsiang Chang, Jui-Yang Chiu, Chien-Chih Hung, Tzu-Hsien Chuang","doi":"10.1109/APEC43580.2023.10131457","DOIUrl":"https://doi.org/10.1109/APEC43580.2023.10131457","url":null,"abstract":"Grid voltage is always distorted which results in grid-current distortion when there is no control at the capacitor current. This paper presents the grid-current improvement with direct digital control and capacitor voltage feedforward (CVF) for 3Φ3W LCL grid-connected inverter under distorted grid voltages. With the inverter-side current feedback, the simple direct digital control can cover inductance variation and determine the control laws to track inverter-side inductor current, achieving robustness. A simple hysteresis repetitive predictor with finite impulse response low-pass filter and compensator term is introduced to the CVF loop which can stabilize the system and compensate the distorted grid current with effective control. Therefore, the overall control system becomes simple, robust and effective. The virtual impedance method is adopted to confirm the stability when the filter inductances drop and control parameters vary. Simulated and experimental results from 12 kW are used to verify the theoretical analyses and discussions.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116211127","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}
引用次数: 0
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