Chinese Journal of Electrical Engineering最新文献_第4页

Overview of Common-Mode Noise Cancellation Techniques for Isolated Power Converters 隔离型电源变换器共模降噪技术综述

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-06 DOI: 10.23919/CJEE.2026.000002

Lihong Xie

引用次数: 0

A Spread Spectrum Method for Four-level ANPC Inverters Based on Periodic Frequency Modulation 基于周期调频的四电平ANPC逆变器扩频方法

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-07-09 DOI: 10.23919/CJEE.2025.000154

Yu Wang;Jianfei Chen;Mengyuan Wang;Wei Zhao

{"title":"A Spread Spectrum Method for Four-level ANPC Inverters Based on Periodic Frequency Modulation","authors":"Yu Wang;Jianfei Chen;Mengyuan Wang;Wei Zhao","doi":"10.23919/CJEE.2025.000154","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000154","url":null,"abstract":"Four-level inverters can output multiple voltage levels, which can mitigate the negative impacts of <tex>$mathrm{d}v/mathrm{d}t$</tex>. However, high-frequency switching of the power device is a primary cause of <tex>$mathrm{d}v/mathrm{d}t$</tex>. Periodic switching frequency pulse width modulation (PSF-PWM) is widely used in power converters to reduce electromagnetic interference. In this study, a PSF-PWM method is introduced for four-level inverters. A triangular carrier wave generates a switching frequency sequence based on three periodic functions, while the central switching frequency remains consistent with that of conventional PWM methods. The fundamental principles behind the harmonic dispersion effect of the PSF-PWM method are analyzed by deriving an expression for the power spectral density. An experimental evaluation of the proposed method is conducted with a simulation and real measurements of the operation of a four-level active neutral point clamped (4L-ANPC) inverter as an example. The results show that the PWM harmonics near the switching frequency and their integer multiples are dispersed to the adjacent frequency bands. Thus, the device exhibits reduced electromagnetic interference compared to conventional PWM techniques in four-level ANPC inverters.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 2","pages":"175-187"},"PeriodicalIF":4.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11603235","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443313","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

Active Clamped Quasi-Y-Source Inverter and Its PWM Control Method 有源箝位准y源逆变器及其PWM控制方法

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-07-09 DOI: 10.23919/CJEE.2026.000028

Xupeng Fang;Hang Zhao;Tengfei Wang;Zexin Zhang

引用次数: 0

Multi-Timescale Reactive-Power Support of Doubly Fed Wind Turbines During Grid Transients 电网暂态时双馈风电机组的多时间尺度无功支持

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-07-09 DOI: 10.23919/CJEE.2026.000012

Haoyi Wang;Minxiao Han;Wenhao Du;Yifei Guan;Frehiwet Kassa;Yan Cheng

{"title":"Multi-Timescale Reactive-Power Support of Doubly Fed Wind Turbines During Grid Transients","authors":"Haoyi Wang;Minxiao Han;Wenhao Du;Yifei Guan;Frehiwet Kassa;Yan Cheng","doi":"10.23919/CJEE.2026.000012","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000012","url":null,"abstract":"Power systems with high renewable-energy penetration increasingly demand that generating units provide support during grid transients. The physical structure and control system of doubly fed wind turbines determine whether they can provide reactive-power compensation at multiple timescales during grid-transient processes. By analyzing the transient characteristics of doubly fed wind turbines at different timescales during faults, a joint multi-timescale coordinated control strategy, including doubly fed wind generator instantaneous spontaneous reactive-power compensation, grid-side converter fast reactive compensation, and rotor-side converter (RSC) compensation, is developed. A back electromotive force generated from the stator transient flux is applied to the RSC control loop as dynamic feedforward compensation, which together with reactive reference value optimization and virtual resistance, achieves fault ride-through without crowbar operation during faults. Simulation models of the doubly fed wind turbine connected to the AC grid and sent out via line-commutated converter-based high-voltage direct current (LCC-HVDC) are constructed in the PSCAD/EMTDC simulation platform to verify the superiority of the proposed control strategy for multi-timescale reactive-power compensation.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 2","pages":"160-174"},"PeriodicalIF":4.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11603237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443401","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 Current-Sharing Model for Multichip Parallel MOSFETs with Common-Source Structure 共源结构多片并联mosfet的动态电流共享模型

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-04-23 DOI: 10.23919/CJEE.2025.000159

Xu Yang;Haixiao Zheng;Jin Zhu;Minghao Wang;Yu Lei

{"title":"Dynamic Current-Sharing Model for Multichip Parallel MOSFETs with Common-Source Structure","authors":"Xu Yang;Haixiao Zheng;Jin Zhu;Minghao Wang;Yu Lei","doi":"10.23919/CJEE.2025.000159","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000159","url":null,"abstract":"With the gradual popularization of integrated modules of parallel chips, current sharing has become a key research direction in meeting increasingly stringent performance requirements. Most existing current-sharing methods focus on the half-bridge structure of parallel chips, which is not applicable to common-source power modules with bidirectional turn-on and turn-off capability. A current-sharing method is proposed for multi-chip parallel metal-oxide-semiconductor field-effect transistors (MOSFETs) in a common-source structure and a current-sharing criterion is introduced for MOSFETs in a common-source connection, which improves current balancing in package modeling by suppressing the circulating current between chips in an asymmetric layout. This study models the MOSFET common-source power module, abstracts the package parasitic parameter variation scenarios in different layouts, and extracts the parasitic inductance for the simulation. The simulation results verified the validity of the proposed current-sharing criterion. A MOSFET power module is fabricated and double-pulse-tested to verify its on-off capability. This study provides a basis for improving the current-sharing capability of parallel devices, and offers new insights into the design and optimization of power module packages.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 2","pages":"210-221"},"PeriodicalIF":4.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11494202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443375","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

Model-Free Predictive Control Strategy for Photovoltaic Grid-Forming Inverters with MPPT and Power-Dispatch Capabilities 具有MPPT和功率调度能力的光伏并网逆变器无模型预测控制策略

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-03-26 DOI: 10.23919/CJEE.2026.000027

Pengfei Qi;Hang Zhang;Alian Chen;Guanguan Zhang;Cheng Cheng;Jianchao Wang

{"title":"Model-Free Predictive Control Strategy for Photovoltaic Grid-Forming Inverters with MPPT and Power-Dispatch Capabilities","authors":"Pengfei Qi;Hang Zhang;Alian Chen;Guanguan Zhang;Cheng Cheng;Jianchao Wang","doi":"10.23919/CJEE.2026.000027","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000027","url":null,"abstract":"As the penetration of photovoltaic (PV) sources into grids increases, transitioning PV grid-connected systems from grid-following (GFL) control to grid-forming (GFM) control is crucial for enhancing active grid support. Owing to the randomness and fluctuation of PV power generation, PV GFM inverters face challenges related to the power mismatch between their AC and DC sides. If the maximum output power of the PV array fails to meet the GFM demand, this insufficiency poses critical challenges for stable GFM operation. A model-free predictive control (MFPC) strategy is proposed for PV GFM inverters with maximum-power point tracking (MPPT) and power-dispatch capabilities. The operating mode of the grid-connected PV system is determined by comparing the maximum PV power with the power required on the AC side. Subsequently, a compact-format dynamic linearization (CFDL) model of the boost converter is established. By adjusting the weight factor of the cost function, the PV current and DC voltage are tracked, enabling adaptive switching between the MPPT mode and power-dispatch mode (PDM). Model-free adaptive control (MFAC) is used for the voltage-current inner loop of the GFM inverter to further enhance the dynamic performance and robustness. Simulation and experimental results indicate that the proposed method enables adaptive switching between the MPPT mode and PDM as the irradiation and AC-side dispatchable power changes. Additionally, the proposed method provides better dynamic performance in the switching process and better robustness when the filtering parameters are mismatched.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 2","pages":"120-133"},"PeriodicalIF":4.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11456881","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443399","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

Reconstruction Strategy for Transmission Line Currents with Non-Invasive Detection 非侵入式输电线路电流重建策略

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-07-09 DOI: 10.23919/CJEE.2025.000119

Xiaokai Zhao;Qingsong Wang;Chenwen Cheng;Wei Hua

{"title":"Reconstruction Strategy for Transmission Line Currents with Non-Invasive Detection","authors":"Xiaokai Zhao;Qingsong Wang;Chenwen Cheng;Wei Hua","doi":"10.23919/CJEE.2025.000119","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000119","url":null,"abstract":"To realize non-contact detection of high-voltage transmission line currents, a transmission line current reconstruction strategy based on magnetic sensors is proposed. Initially, a catenary model of the sagging state is established by analyzing the force on the transmission line. Subsequently, a detailed three-dimensional spatial magnetic field model of the conductor is derived according to the Biot-Savart electromagnetic law. Furthermore, a current reconstruction strategy for transmission lines based on the RLS-NSGA-III algorithm is proposed. The collected magnetic field data are corrected using the RLS algorithm to reduce the impact of sampling errors. The NSGA-III algorithm can simultaneously determine the three-phase current of the transmission lines, achieving high precision and convergence. Lastly, the feasibility and accuracy of the proposed transmission line magnetic field model and current reconstruction strategy are validated through simulations and experiments. The experimental results show that by detecting the magnetic field of the transmission line, the reconstructed three-phase current of the wire can be obtained with a maximum error of 2%, and accurate detection can still be achieved in situations such as those involving an unbalanced three-phase current of the transmission line.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 2","pages":"146-159"},"PeriodicalIF":4.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11603233","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443400","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 the Multi-Objective Optimization of Permanent Magnet Synchronous Motors 永磁同步电机多目标优化研究进展

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-03-26 DOI: 10.23919/CJEE.2026.000020

Yuan Mao;Yuanzhi Wang;Shuangxia Niu;Zheng Gong;Xiaofeng Zheng;Chao Chen

引用次数: 0

Design and Analysis of Double-Sided Modular Composite Excitation Permanent-Magnet Linear Vernier Machine 双面组合式复合励磁永磁直线游标机的设计与分析

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2025-10-06 DOI: 10.23919/CJEE.2025.000179

Qiaoling Yang;Chenyu Yang;Yingyan Wan;Hailong Liu

{"title":"Design and Analysis of Double-Sided Modular Composite Excitation Permanent-Magnet Linear Vernier Machine","authors":"Qiaoling Yang;Chenyu Yang;Yingyan Wan;Hailong Liu","doi":"10.23919/CJEE.2025.000179","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000179","url":null,"abstract":"Conventional double permanent-magnet linear vernier motors eliminate the normal force found in unilateral motors; however, they have low thrust density, large thrust fluctuations, significant vibration, and poor phase-to-phase fault tolerance. Therefore, a new double permanent-magnet linear vernier motor is proposed by combining the modular structure with the composite excitation method. The modulation method of composite excitation can effectively increase the average thrust of the motor and reduce thrust fluctuations, and the modular structure can effectively improve the phase tolerance performance of the motor. First, the topology of the motor is determined, from which an equivalent magnetic network model is derived to analyze the magnetic circuit direction and magnetic field distribution of the motor. Second, the composite excitation mechanism is analyzed and verified using finite element analysis. Third, the main parameters of the motor are analyzed and optimized, and the performance is compared with that of the bilateral modular motor and consequent-pole motor. The findings indicate that the electromagnetic performance of the motor is significantly superior to those of the two aforementioned motors. Finally, the temperature field distribution and vibration characteristics are analyzed and compared. The results show that the proposed motor can suppress the vibration problem of linear magnetic field modulation-type motors to a certain extent. This work serves as a solid foundation for further research and implementation of double-sided modular composite excitation permanent-magnet linear Vernier machines.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 2","pages":"284-298"},"PeriodicalIF":4.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11194295","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443326","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

Faulty-Line Selection Method Based on Pearson Correlation Coefficient in Neutral Non-Effectively Grounded Systems 基于Pearson相关系数的中性点非有效接地系统故障选线方法

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Chinese Journal of Electrical Engineering Pub Date : 2026-06-01 Epub Date: 2026-07-09 DOI: 10.23919/CJEE.2026.000005

Yang Lei;Fan Yang;Yinjun Zhu;Jun Wang;Liuxin Xie;Jinghua Wang;Chao Wang;Heng Chen

{"title":"Faulty-Line Selection Method Based on Pearson Correlation Coefficient in Neutral Non-Effectively Grounded Systems","authors":"Yang Lei;Fan Yang;Yinjun Zhu;Jun Wang;Liuxin Xie;Jinghua Wang;Chao Wang;Heng Chen","doi":"10.23919/CJEE.2026.000005","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000005","url":null,"abstract":"When a single-phase grounded fault occurs in a distribution network, a quick selection of the faulty line is crucial for the safe and reliable operation of the network. To address the low accuracy of selection devices in detecting grounded faulty lines, a line selection method based on the Pearson correlation coefficient is proposed by analyzing the similarity of the zero-sequence current fitting curve and the slope curve of each line in the distribution network when a single-phase grounded fault occurs. The apparent difference between the slope of the zero-sequence current fitting curve of the faulty and healthy lines is used to select the faulty line. Specifically, a local weighted linear fitting and differentiation are performed on the zero-sequence currents of each line to obtain the corresponding slope curves. Subsequently, the similarity of the slope curves of the zero-sequence current waveforms of the adjacent lines is used to determine the faulty line. If the similarity between a line and two adjacent lines is poor or negative (Pearson correlation coefficient close to or less than 0), it is determined as a faulty line. If the similarity between a line and at least one adjacent line is high (Pearson correlation coefficient close to 1), it is determined to be a healthy line. If the similarity of the slope curves of the zero-sequence current waveform of all lines is high (Pearson correlation coefficient close to 1), it is determined to be a bus fault. Matlab/Simulink simulation results showed that the proposed method is effective under various fault conditions and has a high detection sensitivity to high transition resistance faults.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 2","pages":"299-310"},"PeriodicalIF":4.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11603273","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148443327","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