Chinese Journal of Electrical Engineering最新文献_第3页

Hybrid Modulation Strategy with Voltage Balancing Control for Four-Level Neutral-Point Clamped Converters 四级中性点钳位转换器的混合调制策略与电压平衡控制

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000089

Ning Xie;Wei Zhao;Wenzhi Lin;Zhenglei Wang;Yukai Chen;Chengzhi Li;Jianfei Chen

{"title":"Hybrid Modulation Strategy with Voltage Balancing Control for Four-Level Neutral-Point Clamped Converters","authors":"Ning Xie;Wei Zhao;Wenzhi Lin;Zhenglei Wang;Yukai Chen;Chengzhi Li;Jianfei Chen","doi":"10.23919/CJEE.2024.000089","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000089","url":null,"abstract":"Capacitor voltage imbalance in four-level (4L) neutral-point clamped (NPC) converters is a direct factor hindering their application. In particular, when they are applied in motor drives, space vector pulse-width modulation (SVPWM) is a more popular scheme, but conventional 4L SVPWM cannot achieve the voltage balancing control of DC-link capacitors, is complex to implement, and requires costly computation. A hybrid modulation method with capacitor voltage-balancing control for 4L NPC converters is proposed. The proposed method is achieved using three-level (3L) SVPWM and two-level (2L) carrier-based pulse-width modulation (CPWM) based on the concept of “4L=3L+2L”. Thus, it can be easily implemented on a digital chip because the modulation process is nearly identical to that of 3L SVPWM without the more cumbersome 4L SVPWM algorithm. Meanwhile, any proven optimization scheme of 3L SVPWM can be directly applied to the proposed method to further improve performance. Simulation and experimental results for a 4L active NPC converter demonstrate the effectiveness of the proposed method.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"25-36"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic Reconstruction of Total-Cross-Tied Photovoltaic Array Based on Arrays Using an Improved Dung Beetle Algorithm 使用改进的蜣螂算法动态重建基于阵列的全交叉光伏阵列

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000088

Peijin Liu;Tao Huang;Yong Chen;Lei Dong;Fei Yu

{"title":"Dynamic Reconstruction of Total-Cross-Tied Photovoltaic Array Based on Arrays Using an Improved Dung Beetle Algorithm","authors":"Peijin Liu;Tao Huang;Yong Chen;Lei Dong;Fei Yu","doi":"10.23919/CJEE.2024.000088","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000088","url":null,"abstract":"A dynamic reconfiguration method for photovoltaic (PV) arrays based on an improved dung beetle algorithm (IDBO) to address the issue of PV array mismatch loss caused by partial shading conditions (PSCs) is proposed. To establish the output power-current (P-I) segmentation function for the total-cross-tied (TCT) PV array and the constraint function for the electrical switches, the IDBO algorithm was used to optimize both the P-I segmentation function and the electrical switch constraint function. IDBO is compared with algorithm-free reconfiguration and five other heuristic algorithms using two evaluation criteria: mismatch loss and power enhancement percentage, across six shading scenarios for 6×6 PV arrays. The irradiation distribution of PV arrays reconfigured by IDBO is also presented. The results show that IDBO effectively increases the output power of PV arrays and reduces mismatch loss. The output PV curves tend to exhibit a single peak, and the reconstruction results are superior to those obtained with the other methods.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"77-93"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707123","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Modulation Strategy to Achieve Neutral-point Voltage Balance, Common-mode Voltage, and Switching Loss Reduction for Neutral-point Clamped Three-level Inverters 实现中性点箝位三电平逆变器中性点电压平衡、共模电压和开关损耗降低的新型调制策略

Chinese Journal of Electrical Engineering Pub Date : 2024-07-11 DOI: 10.23919/CJEE.2024.000080

Donghan Liu;Jinping Wang;Shengyu Liu;Weidong Jiang

引用次数: 0

A Multitime-Scale Deep Learning Model for Lithium-ion Battery Health Assessment Using Soft Parameter-sharing Mechanism 利用软参数共享机制评估锂离子电池健康状况的多时标深度学习模型

Chinese Journal of Electrical Engineering Pub Date : 2024-07-11 DOI: 10.23919/CJEE.2024.000085

Lulu Wang;Kun Zheng;Yijing Li;Zhipeng Yang;Feifan Zhou;Jia Guo;Jinhao Meng

{"title":"A Multitime-Scale Deep Learning Model for Lithium-ion Battery Health Assessment Using Soft Parameter-sharing Mechanism","authors":"Lulu Wang;Kun Zheng;Yijing Li;Zhipeng Yang;Feifan Zhou;Jia Guo;Jinhao Meng","doi":"10.23919/CJEE.2024.000085","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000085","url":null,"abstract":"Efficient assessment of battery degradation is important to effectively utilize and maintain battery management systems. This study introduces an innovative residual convolutional network (RCN)-gated recurrent unit (GRU) model to accurately assess health of lithium-ion batteries on multiple time scales. The model employs a soft parameter-sharing mechanism to identify both short-and long-term degradation patterns. The continuously looped \u0000<tex>$Q(V), T(V), frac{mathrm{d}Q}{mathrm{d}V}$</tex>\u0000, and \u0000<tex>$frac{mathrm{d}T}{mathrm{d}V}$</tex>\u0000 are extracted to form a four-channel image, from which the RCN can automatically extract the features and the GRU can capture the temporal features. By designing a soft parameter-sharing mechanism, the model can seamlessly predict the capacity and remaining useful life (RUL) on a dual time scale. The proposed method is validated on a large MIT-Stanford dataset comprising 124 cells, showing a high accuracy in terms of mean absolute errors of 0.004 77 for capacity and 83 for RUL. Furthermore, studying the partial voltage fragment reveals the promising performance of the proposed method across various voltage ranges. Specifically, in the partial voltage segment of 2.8-3.2 V, root mean square errors of 0.010 7 for capacity and 140 for RUL are achieved.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10596096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sliding Mode Fault-Tolerant Control Based on Fast Convergence Law for Faults of PMSM 基于快速收敛法则的滑模容错控制，用于 PMSM 故障控制

Chinese Journal of Electrical Engineering Pub Date : 2024-07-11 DOI: 10.23919/CJEE.2024.000082

Wan Feng;Mengdi Li;Wenjuan Zhang;Shoudao Huang;Haixia Zhang

{"title":"Sliding Mode Fault-Tolerant Control Based on Fast Convergence Law for Faults of PMSM","authors":"Wan Feng;Mengdi Li;Wenjuan Zhang;Shoudao Huang;Haixia Zhang","doi":"10.23919/CJEE.2024.000082","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000082","url":null,"abstract":"It is difficult for the traditional PI controller to meet high-performance control requirements under the demagnetization fault of a permanent magnet synchronous motor (PMSM). To address this problem, this study proposes a novel sliding mode fault-tolerant control method for PMSM demagnetization faults. First, the mathematical model of PMSM under demagnetization fault state is established, and the reasons for poor fault tolerance of the conventional PI controller are analyzed. A new convergence law is used to design the speed loop sliding mode feedback controller, and its stability is demonstrated. Meanwhile, an adaptive forgetting factor recursive least squares (AFRLS) flux linkage observer is designed to keep the controller parameter values in line with the actual motor parameter values, to reduce the impact of demagnetization faults on motor control performance and achieve fault-tolerant control of demagnetization faults. Finally, simulation and experimental comparison with conventional PI control demonstrate that the proposed method is more robust and resistant to interference.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"147-157"},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10596094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stability Studies on PV Grid-connected Inverters under Weak Grid: A Review 弱电网条件下光伏并网逆变器稳定性研究综述

Chinese Journal of Electrical Engineering Pub Date : 2024-07-11 DOI: 10.23919/CJEE.2024.000081

Ming Li;Xing Zhang;Xinxin Fu;Hua Geng;Wei Zhao

引用次数: 0

Decision-making Method for Pumped Storage Power Stations in the Electricity Energy and Frequency Regulation Markets 电力能源调频市场中抽水蓄能电站的决策方法

Chinese Journal of Electrical Engineering Pub Date : 2024-07-11 DOI: 10.23919/CJEE.2024.000084

Man Chen;Hongtao Zhu;Yumin Peng;Xuan Wang;Xuefeng Zhang;Yijun Xiong;Lianfu Chen;Yikai Li;Bushi Zhao

{"title":"Decision-making Method for Pumped Storage Power Stations in the Electricity Energy and Frequency Regulation Markets","authors":"Man Chen;Hongtao Zhu;Yumin Peng;Xuan Wang;Xuefeng Zhang;Yijun Xiong;Lianfu Chen;Yikai Li;Bushi Zhao","doi":"10.23919/CJEE.2024.000084","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000084","url":null,"abstract":"With the establishment of “carbon peaking and carbon neutrality” goals in China, along with the development of new power systems and ongoing electricity market reforms, pumped-storage power stations (PSPSs) will increasingly play a significant role in power systems. Therefore, this study focuses on trading and bidding strategies for PSPSs in the electricity market. Firstly, a comprehensive framework for PSPSs participating in the electricity energy and frequency regulation (FR) ancillary service market is proposed. Subsequently, a two-layer trading model is developed to achieve joint clearing in the energy and frequency regulation markets. The upper-layer model aims to maximize the revenue of the power station by optimizing the bidding strategies using a Q-learning algorithm. The lower-layer model minimized the total electricity purchasing cost of the system. Finally, the proposed bi-level trading model is validated by studying an actual case in which data are obtained from a provincial power system in China. The results indicate that through this decision-making method, PSPSs can achieve higher economic revenue in the market, which will provide a reference for the planning and operation of PSPSs.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 4","pages":"60-72"},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10596095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142918573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Method for Reconstructing Arc Fault Current Signals and an Adaptive Correction Strategy 电弧故障电流信号重构方法及自适应校正策略

Chinese Journal of Electrical Engineering Pub Date : 2024-06-13 DOI: 10.23919/CJEE.2024.000076

Jinru Huang;Zhihong Xu;Liwei Du

引用次数: 0

Biological Hydrogen Production: A Comprehensive Review for Converting Wastes into Wealth 生物制氢：将废物转化为财富的全面回顾

Chinese Journal of Electrical Engineering Pub Date : 2024-06-13 DOI: 10.23919/CJEE.2024.000065

Tongming Li;Fei Gao;Yigeng Huangfu

{"title":"Biological Hydrogen Production: A Comprehensive Review for Converting Wastes into Wealth","authors":"Tongming Li;Fei Gao;Yigeng Huangfu","doi":"10.23919/CJEE.2024.000065","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000065","url":null,"abstract":"Energy shortages have hindered global economic development. By utilizing waste as a substrate for microbial fermentation, hydrogen production can transform waste into a valuable resource, significantly reducing the cost of hydrogen production and addressing a significant hurdle in achieving large-scale production of microbial hydrogen. This approach has significant potential for future hydrogen-production applications. Two-stage indirect photohydrolysis has recently emerged as a promising and efficient method for hydrogen production using cyanobacteria and green algae. However, this method cannot be directly applied to organic wastewater for hydrogen production. In contrast, dark fermentation by bacteria, particularly ethanol-type fermentation, is highly efficient for producing hydrogen. Therefore, the combination of the indirect photohydrolysis of algae and dark fermentation by bacteria is expected to significantly enhance the hydrogen-production capacity of organic wastewater, laying the groundwork for future large-scale microbial hydrogen production. This study reviews the main types and technical principles of microbial hydrogen production from waste, available waste types, research progress in the microbial hydrogen-production process, strategies to improve the hydrogen-production rate, and challenges faced during industrialization. Future research directions for microbial-waste hydrogen production are also proposed. The aim of this study is to provide a valuable reference for large-scale biological hydrogen-production research.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"110-134"},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10557517","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation and Regulation of High-Efficiency Region Boundary of Variable Magnetic Flux Permanent Magnet Motor 变磁通永磁电机高效区边界的研究与调节

Chinese Journal of Electrical Engineering Pub Date : 2024-06-13 DOI: 10.23919/CJEE.2024.000073

Xuefeng Yu;Xiaoyong Zhu;Li Quan;Zixuan Xiang;Deyang Fan

{"title":"Investigation and Regulation of High-Efficiency Region Boundary of Variable Magnetic Flux Permanent Magnet Motor","authors":"Xuefeng Yu;Xiaoyong Zhu;Li Quan;Zixuan Xiang;Deyang Fan","doi":"10.23919/CJEE.2024.000073","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000073","url":null,"abstract":"With the increasing complexity of electrical vehicles (EVs), the wide-speed-range high-efficiency characteristics of EV drive motors are in strict demand. In this study, the variable magnetic flux effect is introduced into a permanent magnet (PM) motor, and a variable magnetic flux permanent magnetic (VMF-PM) motor is proposed. First, the flux is adjusted flexibly to synchronously broaden the speed regulation range and high-efficiency region. Subsequently, an efficiency analytical model is developed considering the motor speed, current, and flux variations. It is indicated that by the purposeful design of the variable flux leakage topology, the efficiency under high speed can be improved based on a theoretical investigation of the high-efficiency boundary. In addition, based on finite element analysis, the performances before and after optimization of the key parameters of the VMF-PM motor are investigated, including the flux variable characteristics and efficiency characteristics. Finally, a prototype motor is built and tested. Both theoretical analysis and experimental results confirm that based on the assistance of the variable magnetic flux effect, the motor high-efficiency region is broadened effectively, providing a potential research path for designing a wide-speed-range high-efficiency motor.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"135-146"},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10557492","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0