Chinese Journal of Electrical Engineering最新文献

Sliding-Mode Observer-Based Grid Voltage-Observation Method with Frequency-Fixed Dual SOGI and Cross-Compensated Phase-Locked Loop 基于滑动模式观测器的电网电压观测方法与频率固定的双 SOGI 和交叉补偿锁相环路

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000090

Leilei Guo;Qingyang Ye;Nan Jin;Zhenkun Liu;Zhenjun Wu

{"title":"Sliding-Mode Observer-Based Grid Voltage-Observation Method with Frequency-Fixed Dual SOGI and Cross-Compensated Phase-Locked Loop","authors":"Leilei Guo;Qingyang Ye;Nan Jin;Zhenkun Liu;Zhenjun Wu","doi":"10.23919/CJEE.2024.000090","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000090","url":null,"abstract":"Conventional sliding-mode observer (SMO)-based grid-voltage observation methods often require a low-pass filter (LPF) to remove high-frequency sliding-mode noise. However, a complicated phase- and amplitude-compensation method, which is highly sensitive to the DC-offset, is required. A frequency-adaptive dual second-order generalized integrator (SOGI) can be used to replace the LPF, eliminating the compensation link and the effects of the DC-offset; however, strong coupling is introduced between the front-end SOGI block and back-end phase-locked loop (PLL) block, thereby reducing the dynamic performance. To solve this problem, this study proposes an SMO-based grid-voltage observation method with a frequency-fixed dual SOGI and cross-compensated PLL that can eliminate the frequency coupling between the front-end SOGI block and back-end PLL blocks, thereby increasing its dynamic performance. In this study, the phase and amplitude are compensated simultaneously using the proposed cross-compensation method, achieving an accurate observation of the grid voltage under off-nominal frequencies. An analysis of the small-signal model theoretically verified that the proposed method has good dynamic performance. Finally, the superiority of the proposed method is verified through comparative experiments.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397472","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

Intelligent Energy Management Strategy and Sizing Methodology for Hybrid Systems in Isolated Regions 偏远地区混合动力系统的智能能源管理策略和规模确定方法

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000091

Moufida Saadi;Dib Djalel;Billel Meghni;Djamila Rekioua

{"title":"Intelligent Energy Management Strategy and Sizing Methodology for Hybrid Systems in Isolated Regions","authors":"Moufida Saadi;Dib Djalel;Billel Meghni;Djamila Rekioua","doi":"10.23919/CJEE.2024.000091","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000091","url":null,"abstract":"In this study, a comprehensive approach is presented for the sizing and management of hybrid renewable energy systems (HRESs) that incorporate a variety of energy sources, while emphasizing the role of artificial neural networks (ANNs) in system management. For optimal sizing of an HRES, the monthly average method wherein historical weather data are used to calculate the monthly averages of solar irradiance and wind speed, offering a well-balanced strategy for system sizing. This ensures that the HRES is appropriately scaled to meet the actual energy requirements of the specified location, avoiding the pitfalls of over- and under-sizing, and thereby enhancing the operational efficiency. Furthermore, the study details a cutting-edge strategy that employs ANNs for managing the inherent complexities of HRESs. It elaborates on the design, modeling, and control strategies for the HRES components by utilizing Matlab/Simulink for implementation. The findings demonstrate the proficiency of the ANN -based power manager in determining the operational modes guided by a specifically designed flowchart. By integrating ANN-driven energy management strategies into an HRES, the proposed approach marks a significant advancement in system adaptability, precision control, and efficiency, thereby maximizing the effective utilization of renewable resources.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707120","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397473","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

Design-Oriented Transient Stability Assessment for Droop-Controlled Converter Considering Grid Voltage Phase-Angle Jump 考虑电网电压相角跳变的降压控制变流器瞬态稳定性评估--以设计为导向

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000092

Pingjuan Ge;Hailiang Xu;Ruitong Mao;Chunming Tu;Fan Xiao;Qi Guo

{"title":"Design-Oriented Transient Stability Assessment for Droop-Controlled Converter Considering Grid Voltage Phase-Angle Jump","authors":"Pingjuan Ge;Hailiang Xu;Ruitong Mao;Chunming Tu;Fan Xiao;Qi Guo","doi":"10.23919/CJEE.2024.000092","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000092","url":null,"abstract":"Droop-controlled voltage-source converters (VSCs) can provide frequency and voltage support to power grids. However, during a grid fault, VSCs may experience transient instability, which can be significantly affected by both the control parameters and fault conditions. This mechanism has not been fully elucidated in previous studies. In particular, grid-voltage faults are commonly accompanied by a grid voltage phase-angle jump (VPAJ), which is typically ignored in the evaluation of the transient stability of VSCs. To address this issue, this study comprehensively assesses the impact of the VPAJ and key control parameters on the transient characteristics of VSCs. Furthermore, the critical clearing angle and critical clearing time are quantitatively calculated to define the transient stability boundary. In addition, a transient stability-enhancement control method that considers the transient stability constraints is proposed. Finally, simulations and experimental tests are conducted to validate both the theoretical analysis and proposed method.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707124","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397128","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

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":null,"pages":null},"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":null,"pages":null},"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

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":null,"pages":null},"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":null,"pages":null},"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

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":null,"pages":null},"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":null,"pages":null},"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

Review of High-Frequency PWM Acoustic Noise Suppression Methods for PMSMs PMSM 高频 PWM 声学噪声抑制方法综述

Chinese Journal of Electrical Engineering Pub Date : 2024-06-13 DOI: 10.23919/CJEE.2024.000078

Wentao Zhang;Haiyang Gao;Yongxiang Xu;Jibin Zou

引用次数: 0