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2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)最新文献

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An Optimized Voltage Support Strategy for PMSG-Based Wind Turbines under Unbalanced Grid Fault 电网不平衡故障下pmsg风力发电机组电压支持优化策略
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215272
Haoning Cheng, Min Huang, Yu Zhang, Weimin Wu
{"title":"An Optimized Voltage Support Strategy for PMSG-Based Wind Turbines under Unbalanced Grid Fault","authors":"Haoning Cheng, Min Huang, Yu Zhang, Weimin Wu","doi":"10.1109/PEDG56097.2023.10215272","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215272","url":null,"abstract":"Reactive power is normally injected into grid to support voltages under unbalanced grid fault. However, the non-fault phase voltage is increased with only positive sequence reactive power injection, and the degree of three-phase voltages unbalance is deepened. Therefore, it is necessary to inject negative sequence reactive power to suppress the rise of non-fault phase voltage. To address this problem, an optimized strategy based on second harmonic active-power suppress control (HAPSC) and voltage unbalance factor (VUF) is proposed. The main advantages of improved strategy are reducing the degree of three-phase voltages unbalance and supporting voltages. Simulation in PSCAD/EMTDC is used to verify the effectiveness of the proposed control strategy.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114354475","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
Stability Comparison of Grid-Forming Converters with Different Power Calculation Strategies 不同功率计算策略下并网变流器稳定性比较
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215196
Ziqi Zhou, S. Pugliese, M. Liserre
{"title":"Stability Comparison of Grid-Forming Converters with Different Power Calculation Strategies","authors":"Ziqi Zhou, S. Pugliese, M. Liserre","doi":"10.1109/PEDG56097.2023.10215196","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215196","url":null,"abstract":"Grid-forming (GFM) converters, such as virtual synchronous generators (VSGs), behave as voltage sources behind a reactance within a specified frequency range. Therefore, solutions to limit the rapid growth of the converter output current, which may cause over-current tripping during grid faults, are necessary. One effective solution is to use outer dual-loop voltage and current control so that current limitation can be realized by saturating the current reference. In the condition, electrical power (EP) of VSG can be calculated either with the converter output current or with the virtual current from the voltage loop, leading to different small-signal stability for the GFM converter. In this paper, small-signal stability of these two EP calculation methods are analysed and compared. Small-signal eigenvalues analysis shows that using virtual current from outer voltage loop for EP calculation contributes to better small-signal stability as compared to the conventional EP calculation approach, under both the weak grid and the strong grid conditions. Simulation results are provided to validate the effectiveness of the analysis.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114536823","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
Design of Magnetic Structure for Zero Input Current Ripple in DC-DC Converter with Multi-winding Coupled Inductor 多绕组耦合电感DC-DC变换器零输入电流纹波磁结构设计
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215237
H. Shen, S. Pan, Jinwu Gong, Qiyuan Hu, Zisen Lin, X. Zha
{"title":"Design of Magnetic Structure for Zero Input Current Ripple in DC-DC Converter with Multi-winding Coupled Inductor","authors":"H. Shen, S. Pan, Jinwu Gong, Qiyuan Hu, Zisen Lin, X. Zha","doi":"10.1109/PEDG56097.2023.10215237","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215237","url":null,"abstract":"Aiming at application scenarios that require low current ripple, this article proposes a two-phase integrated magnetic core structure to achieve zero current ripple in coupled inductor by controlling the coupling parameters in DC-DC converter. The proposed structure integrates all windings into a pair of magnetic cores so as to improve the utilization rate of the magnetic core. Moreover, the coupling parameter design problem is transformed into a magneto resistive design problem, which is easy to implement in engineering, and the ripple of the two-phase inductor current and input current is attenuated. Then, through the negative coupling characteristics between the phases, the flux in the magnetic core structure is cancelled partially, which reduces the magnetic loss and improves the efficiency of the converter. Finally, the correctness of the theoretical analysis and the feasibility of the proposed topology and magnetic core structure are verified by simulation and experimental results.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121516595","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
A Buck-Boost Common Ground Bridgeless PFC Rectifier with Power Decoupling Ability 具有功率去耦能力的降压升压共地无桥PFC整流器
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215258
Jiangpeng Yang, Yang Li, Zeliang Shu
{"title":"A Buck-Boost Common Ground Bridgeless PFC Rectifier with Power Decoupling Ability","authors":"Jiangpeng Yang, Yang Li, Zeliang Shu","doi":"10.1109/PEDG56097.2023.10215258","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215258","url":null,"abstract":"A buck-boost common ground bridgeless power factor correction rectifier (PFC) which can achieve the function of power decoupling has been proposed. The topology realizes the common ground connection between the power grid and the load, so the common-mode current can be completely eliminated. As well as, the converter also has the function of boosting and reducing voltage, which can achieve a wide output voltage range. It is worth mentioning that this converter can achieve the power decoupling function without any electrolytic capacitor or active pulsating-power-buffering. Then, detailed analysis was conducted on the operation mode of the PFC. Finally, the feasibility of this topology was demonstrated through steady-state and dynamic simulation results.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114834831","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
Short-circuit Current Improvement Control of Grid-forming Controlled Wind Turbine 并网控制风力发电机组短路电流改善控制
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215189
Zhenyan Deng, Han Wang, Yao Qin, Yunfeng Cao, X. Cai
{"title":"Short-circuit Current Improvement Control of Grid-forming Controlled Wind Turbine","authors":"Zhenyan Deng, Han Wang, Yao Qin, Yunfeng Cao, X. Cai","doi":"10.1109/PEDG56097.2023.10215189","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215189","url":null,"abstract":"Grid-forming controlled wind turbine is the key equipment to build the new power system. However, under the grid fault, the short-circuit current of it is limited, far less than the value that synchronous generator can output to support fault voltage recovery. The key is that the power devices of converter can bear limited thermal stress. The thermal model of switching devices is established and the thermal behavior of grid-forming controlled wind turbine is researched. It has been found that adjusting the switching frequency and adopting to discontinuous PWM(DPWM) can effectively reduce the junction temperature of power devices, thus increasing the short- circuit current of wind turbine to 4 times during the fault. The effectiveness of the proposed method is validated in PLECS software.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115735016","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
Islanding Detection with Zero Non-detection Zone for DC Microgrids Based on Current Disturbance of Adaptive Resonant Frequency 基于自适应谐振频率电流扰动的直流微电网零无检区孤岛检测
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215274
Tianling Shi, Boxin Liu, Jintao Lei, Fei Wang, Xin Xiang, Wuhua Li
{"title":"Islanding Detection with Zero Non-detection Zone for DC Microgrids Based on Current Disturbance of Adaptive Resonant Frequency","authors":"Tianling Shi, Boxin Liu, Jintao Lei, Fei Wang, Xin Xiang, Wuhua Li","doi":"10.1109/PEDG56097.2023.10215274","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215274","url":null,"abstract":"In this paper, the mechanism of oscillation frequency shift and the occurrence of the non-detection zone (NDZ) of the state-of-art islanding detection method (IDM) with current disturbance of selected frequency is revealed by developing the current disturbance sensitivity model. On the basis of this, an IDM based on the adaptive resonant frequency selection is proposed to eliminate the NDZ by dynamically selecting the disturbance frequency according to different system power. Finally, the theoretical development is verified through simulations.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130030702","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
High Step-up DC/DC Converter Based on Switched Inductor and Switched Capacitor Unit 基于开关电感和开关电容单元的高升压DC/DC变换器
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215296
Longlong Zhang, Feiling Zheng, Jingcheng Zhao, Xiao Qin, Rui Li, Q. Yan, Rende Zhao, Yansong Wang
{"title":"High Step-up DC/DC Converter Based on Switched Inductor and Switched Capacitor Unit","authors":"Longlong Zhang, Feiling Zheng, Jingcheng Zhao, Xiao Qin, Rui Li, Q. Yan, Rende Zhao, Yansong Wang","doi":"10.1109/PEDG56097.2023.10215296","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215296","url":null,"abstract":"In this paper, a novel high step-up non-isolated DC-DC converter based on switched inductor and switched capacitor voltage doubler is proposed, which is suitable for new energy systems with low output voltage including fuel cell, photovoltaic, etc. In the converter, the high voltage gain is achieved by replacing the inductor in the conventional interleaved parallel connection with a switched inductor unit and adding a voltage doubler composed of switched capacitors in the output side. In addition, the proposed high step-up converter provides lower voltage stress on switches and diodes. In this paper, the operating principle, parameter design and theoretical efficiency calculation are analyzed in detail. Finally, the experimental results are given to verify the theoretical analysis in the paper.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130422865","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
A Novel Asymmetric Modulation of Three Phase Buck Rectifier without Current Distortion at Sector Switching Point 一种无扇形开关点电流畸变的三相降压整流器非对称调制方法
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215218
Xin Chen, Jianping Xu, Xia Guo, F. Xie
{"title":"A Novel Asymmetric Modulation of Three Phase Buck Rectifier without Current Distortion at Sector Switching Point","authors":"Xin Chen, Jianping Xu, Xia Guo, F. Xie","doi":"10.1109/PEDG56097.2023.10215218","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215218","url":null,"abstract":"SVPWM modulation three-phase buck rectifier has serious input current distortion at the sector switching point, which results in serious total harmonic distortion (THD) of input current. The input current distortion is analyzed by considering the PWM driving signals at the sector switching point. A novel asymmetric five-segment modulation strategy is proposed, which significantly eliminates the distortion of input current at the sector switching point and reduces the input current THD. The analysis results and the feasibility of the proposed modulation are verified by PSIM simulation.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133994006","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
Extended Tolerance of Capacitance Drifting for LCL-Interfaced Energy System Converter lcl接口能量系统变换器电容漂移的扩展容限
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215193
Da-Hyun Kang, Yantao Xu, Xikui Yu, Yanfei Mao, W. Yao
{"title":"Extended Tolerance of Capacitance Drifting for LCL-Interfaced Energy System Converter","authors":"Da-Hyun Kang, Yantao Xu, Xikui Yu, Yanfei Mao, W. Yao","doi":"10.1109/PEDG56097.2023.10215193","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215193","url":null,"abstract":"Active damping has been applied to LCL-filtered converter systems to ensure a stable current control. However, the aging effect and operational conditions may lead to a significant parameter drifting of the filter capacitance. This may result in a new resonant frequency beyond the designed active damping region. To address the issue, this paper analyzes the oscillation phenomena under deep capacitance degradations with the all-pass filter-based active damping. The analysis reveals that the oscillation at the –540°-phase-crossing will be firstly excited if the capacitance degrades gradually. This feature is then employed to extend the damping region against capacitance drifting. Moreover, a Discrete Fourier Transform (DFT) unit with limited calculation points is adopted to monitor the resonance around the –540°-phase-crossing point, by doing so, DFT calculation can be simplified to light the calculation burden of the processor. Once the monitored resonance exceeds the threshold, an adaptive Proportional Integral (PI) controller will be enabled to adjust the proportional gain of the current controller to maintain the operation. Real-time Simulation tests are performed, and the results verify that the proposed method can ensure the system stability.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131162064","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
Influence of the Reactive Power Control Loop on Network Frequency Perturbation Plot 无功控制回路对电网频率摄动图的影响
2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) Pub Date : 2023-06-09 DOI: 10.1109/PEDG56097.2023.10215192
Anuradha Mudalige, Heng Wu, Xiongfei Wang, M. Langwasser, M. Liserre
{"title":"Influence of the Reactive Power Control Loop on Network Frequency Perturbation Plot","authors":"Anuradha Mudalige, Heng Wu, Xiongfei Wang, M. Langwasser, M. Liserre","doi":"10.1109/PEDG56097.2023.10215192","DOIUrl":"https://doi.org/10.1109/PEDG56097.2023.10215192","url":null,"abstract":"Grid Forming (GFM) inverters are valuable assets for enabling sustainable power systems. Network Frequency Perturbation (NFP) plot could serve as a valuable tool for evaluating the behaviour of a GFM inverter’s active power control (APC) loop. NFP plot has been recommended in the recent grid code modification by National Grid ESO as a document to be submitted by a grid forming (GFM) plant operator for compliance testing purposes. In a grid connected GFM inverter, it is well known that the APC and reactive power control (RPC) loops are inherently coupled with each other. However, state of the art guidelines on producing and interpreting an NFP plot have completely disregarded the influence of this coupling effect in an attempt to simplify the analysis. In this paper, a systematic analysis is presented which identifies the conditions under which such a simplification could be valid, or could otherwise introduce significant influence on the NFP plot. Simulation results are presented validating the theoretical analysis.","PeriodicalId":386920,"journal":{"name":"2023 IEEE 14th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131239648","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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