Chinese Journal of Electrical Engineering最新文献

Simplified Model Predictive Control for Triple-active-bridge Converter with Low Computational Load 低计算负荷三有源电桥变换器的简化模型预测控制

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000032

Zheng Dong;Tianlong Liu;Tianqu Hao;Siwei Wang;Qian Chen;Yiheng Fan

引用次数: 0

Hybrid DC Circuit Breaker with Superconducting Current Limiting for PV System 光伏系统超导限流混合式直流断路器

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000015

Jianning Yin;Yongyong Zhao;Xiaojian Lang;Jiandong Duan

{"title":"Hybrid DC Circuit Breaker with Superconducting Current Limiting for PV System","authors":"Jianning Yin;Yongyong Zhao;Xiaojian Lang;Jiandong Duan","doi":"10.23919/CJEE.2026.000015","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000015","url":null,"abstract":"With the global acceleration in energy transformation, solar photovoltaic (PV) power generation has been developed as a new power system. The installed capacity of PV power generation has been increasing, and DC circuit breakers for PV power generation must withstand a higher voltage (>DC 1 500 V). In the molded case of a DC circuit breaker, it is difficult to complete arc breaking at higher voltages. On this basis, a self-triggering hybrid DC circuit breaker with superconducting current limiting is proposed, which can effectively suppress the rise rate and peak value of the fault current. A simulation model of the superconducting current-limiting hybrid DC circuit breaker is established by coupling the measured arc model. The current-limiting characteristics under various lengths are analyzed, and a simulation prediction of breaking a larger current at higher voltages is carried out. The advantages of a short breaking time and low current peak are demonstrated. To avoid loss when the quench current of the superconducting coil is lower than the rated current, the superconducting coil was integrated into the transfer branch for the simulation analysis. Good interruption and current-limiting characteristics are exhibited. The hybrid DC circuit breaker with superconducting current limiting provides strong support for the construction of new energy power-generation systems.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"201-214"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11739785","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219319","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

Adaptive Wavelet Transform-Based Energy Management Strategy of Hybrid Energy Storage System for Electric Vehicles Considering Driving Style 基于自适应小波变换的电动汽车混合储能系统能量管理策略

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000021

Jie Jiang;Chun Wang;Quanqing Yu

{"title":"Adaptive Wavelet Transform-Based Energy Management Strategy of Hybrid Energy Storage System for Electric Vehicles Considering Driving Style","authors":"Jie Jiang;Chun Wang;Quanqing Yu","doi":"10.23919/CJEE.2026.000021","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000021","url":null,"abstract":"Driving conditions and styles significantly affect the energy economy and battery lifespan of hybrid energy storage system (HESS) for electric vehicles (EVs). An adaptive wavelet transform (WT)-based energy management strategy (EMS) that considers driving style is proposed to extend battery lifespan and reduce energy loss. First, the dynamic models of the battery, ultracapacitor, and DC/DC converter are established in detail. Second, driving style recognition (DSR) is implemented by analyzing the jerk based on driving cycle recognition (DCR), which is divided into conservative, normal and aggressive. Next, a WT decomposition level adaptive method is designed to separate the transient power online, which can improve the adaptability of the EMS to driving conditions and driving styles. Finally, fuzzy logic control (FLC) is employed to achieve optimal power allocation. Simulation results indicate that compared with the traditional WT-based EMS, the adaptive-level WT-FLC-based EMS has significant advantages in extending the battery lifespan and saving energy. It can effectively suppress the maximum battery current by 58.09%, extend the driving range by 1.49 km at a constant speed of 40 km/h and reduce power fluctuations by 38.04%.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"232-248"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11739786","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219381","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 Control Strategy Based on Cycle-by-Cycle Perturbation and Observation for Reduced Total Harmonic Distortion in Totem-pole Power Factor Correction Converters 基于逐周期摄动和观测的图腾杆功率因数校正变换器总谐波畸变减小混合控制策略

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000039

Wenjie Xu;Yanfeng Chen;Yangbin Zeng;Bo Zhang;Dongyuan Qiu

{"title":"Hybrid Control Strategy Based on Cycle-by-Cycle Perturbation and Observation for Reduced Total Harmonic Distortion in Totem-pole Power Factor Correction Converters","authors":"Wenjie Xu;Yanfeng Chen;Yangbin Zeng;Bo Zhang;Dongyuan Qiu","doi":"10.23919/CJEE.2026.000039","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000039","url":null,"abstract":"Totem-pole power factor correction (PFC) converters operating in the continuous conduction mode under conventional voltage and current double-loop control often suffer from a severe current distortion near zero-crossing points and high harmonic content. To address these issues, a hybrid control strategy based on cycle-by-cycle perturbation and observation (P&O) method is proposed, which integrates quasi-proportional-resonant (QPR) regulation and hysteresis control. In the inner current loop, a QPR controller is employed to enhance the tracking accuracy and disturbance rejection capability of the alternating current (AC). In the outer voltage loop, a cycle-by-cycle P&O algorithm is introduced to dynamically adjust the current reference signal based on the real-time-detected average direct current-link voltage, effectively suppressing the impact of double-line-frequency voltage ripple on the control performance. Furthermore, to mitigate the current distortion during AC voltage zero-crossing instants, the control strategy switches from QPR regulation to a hysteresis control mode when the absolute value of the input AC voltage falls below a predefined threshold, while simultaneously turning off the line-frequency switches. Simulation and experimental results demonstrate that the proposed control strategy significantly improves the steady-state performance and power quality of the totem-pole PFC converter, achieving a power factor of 0.998-0.999, reducing the total harmonic distortion to 3.52%, and attaining an efficiency of 98.2%.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"66-79"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11740132","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219341","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

Oscillation Suppressor for DC Microgrids Based on Capacitor Energy Storage 基于电容储能的直流微电网振荡抑制器

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000017

Chongyao Yuan;Jipei Yang;Ling Yang

引用次数: 0

Energy-Coupling-Aware Adaptive Virtual Impedance Control of VSGs in Weak Grids 弱电网中能量耦合感知的vgs自适应虚拟阻抗控制

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000109

Xueli Liu;Minxin Huo;Shengwei Gao

{"title":"Energy-Coupling-Aware Adaptive Virtual Impedance Control of VSGs in Weak Grids","authors":"Xueli Liu;Minxin Huo;Shengwei Gao","doi":"10.23919/CJEE.2026.000109","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000109","url":null,"abstract":"Weak-grid operation strengthens the interaction between the active-power/frequency and reactive-power/voltage channels of virtual synchronous generators (VSGs), leading to coupled <tex>$P/Q$</tex> oscillation, operating-point deviation, and reduced stability margins. A port-Hamiltonian-system (PHS) energy model is developed for the dominant VSG states and defines an energy coupling coefficient (ECC) to quantify the proportion of cross-state coupling energy. The ECC is then used as the only online coupling indicator for an ECC-guided <tex>$R_{mathrm{v}}-L_{mathrm{v}}$</tex> coordinated adaptive virtual-impedance control strategy. The virtual inertia <tex>$J$</tex> and damping coefficient <tex>$D$</tex> are kept at their nominal values, while the virtual resistance <tex>$R_{mathrm{v}}$</tex> and virtual inductance <tex>$L_{mathrm{Y}}$</tex> are adjusted under magnitude, rate, and smoothing constraints. A dissipativity-oriented stability analysis is further provided, showing that the reduced-order closed-loop system remains locally dissipative and practically bounded under bounded disturbances and admissible virtual-impedance ranges. Simulation and HIL results under source-load disturbance, grid-frequency/voltage disturbance, SCR/X/R scans, and real-time implementation conditions verify that the proposed method reduces power coupling and ECC without introducing time-varying inertia or damping into the VSG frequency loop.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"80-93"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11740131","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219353","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 Parameter Self-tuning Method Considering Abnormal Conditions Identification for Active Distribution Networks 考虑有功配电网异常状态识别的参数自整定方法

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2025.000152

Huidi Wu;Yong Li;Rong Zeng;Wei Hu;Zhiyu Wang;Junle Liu;An Chen;Wenhao Zhang

{"title":"A Parameter Self-tuning Method Considering Abnormal Conditions Identification for Active Distribution Networks","authors":"Huidi Wu;Yong Li;Rong Zeng;Wei Hu;Zhiyu Wang;Junle Liu;An Chen;Wenhao Zhang","doi":"10.23919/CJEE.2025.000152","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000152","url":null,"abstract":"Distributed feeder automation systems (DFAs) are becoming increasingly vital for protecting active distribution networks (ADNs). However, a risk of protection misoperation exists owing to overload conditions. By identifying abnormal conditions, a voltage plane framework is established to explore how parameter variations affect the protection operation and to clarify the relationship between the system power angle and load fluctuations. Subsequently, the impacts on the system are quantified by deriving an identification criterion. Regarding the self-tuning method for DFAs, a comprehensive analysis of their self-healing logic is provided. A novel real-time shared localization and isolation criterion is proposed based on neighborhood messaging that allows for quick fault localization and isolation within the distribution network without depending on a central control station. In line with the identification criterion, a parameter self-tuning method is introduced aimed at optimizing the protection thresholds of DFAs while reducing circuit breaker misoperation. Simulation results show that the proposed strategy can effectively identify abnormal conditions, improve the resilience of DFAs against load fluctuations, and ensure reliable and sensitive operation of circuit breakers.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"291-301"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11740126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219312","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

An Online Secondary Frequency Regulation Algorithm Considering Aggregate Regulation Capacity of Hydrogen Fuel Cell Vehicles Based on Lyapunov Optimization 基于Lyapunov优化的考虑氢燃料电池汽车总调节能力的在线二次频率调节算法

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-07-03 DOI: 10.23919/CJEE.2026.000050

Chen Li;Zhouyang Ren;Wenyuan Li

{"title":"An Online Secondary Frequency Regulation Algorithm Considering Aggregate Regulation Capacity of Hydrogen Fuel Cell Vehicles Based on Lyapunov Optimization","authors":"Chen Li;Zhouyang Ren;Wenyuan Li","doi":"10.23919/CJEE.2026.000050","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000050","url":null,"abstract":"The increasing penetration of renewable energy sources (RES) imposes great challenges on maintaining frequency stability. The flexibility of hydrogen fuel cell vehicles (HFCVs) can be used to provide secondary frequency regulation (SFR) service. However, existing SFR methods overlook the asynchronous grid-connection of HFCVs and rely heavily on the prediction of automatic generation control (AGC) signals. These limitations prevent large-scale HFCVs from accurately responding to AGC signals, which may exacerbate frequency deviations. To address these challenges, a Lyapunov optimization-based online SFR algorithm for HFCVs is proposed. The proposed method effectively balances real-time frequency response and long-term regulation costs. Specifically, a Minkowski sum-based capacity quantification method is developed to account for asynchronous grid-connection of HFCVs. An online SFR algorithm based on Lyapunov optimization is proposed to generate real-time regulation strategies without requiring AGC signal forecasts. The satisfaction of time-coupled energy constraints is mathematically proven through induction. Simulations involving 1 000 HFCVs are conducted to evaluate the effectiveness of the proposed algorithm. In comparison with offline and greedy algorithms, the proposed algorithm better balances frequency regulation performance and regulation cost.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"184-200"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11595071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219323","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

Multi-Load Wireless Power Transmission Systems with High Redundancy 高冗余多负荷无线电力传输系统

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000031

Yufei Zhou;Dengli Qi;Yang Luo;Yu Yan

{"title":"Multi-Load Wireless Power Transmission Systems with High Redundancy","authors":"Yufei Zhou;Dengli Qi;Yang Luo;Yu Yan","doi":"10.23919/CJEE.2026.000031","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000031","url":null,"abstract":"Wireless power transmission technology can be used to solve the complicated wired charging and fixed station charging problems of unmanned aerial vehicles (UAVs). In this paper, a combined 5D transmitting coil structure consisting of four-cell D-shaped coils and one compensatory D-shaped coil is proposed. By combining different D coils according to the switching strategy, the rated power transmission can be achieved in the entire transmitting region; thus, the number and position of loads become flexible, which increases the redundancy of the system. Owing to the multiple loads with multiple-frequency characteristics, cross-coupling should be considered when accessing a system. Owing to the structure of the loose coupler, the power fluctuation between multiple loads is low in the charging region, which means that cross-coupling is negligible. An experimental prototype is constructed to verify its structural characteristics. The experimental results showed that the combined 5D transmitting coil structure can supply energy to a single load in the entire transmitting region by combining different coils with high efficiency or simultaneously supplying energy to multiple independent loads with different frequencies at different positions. This verifies the anti-offset ability and redundancy characteristics of the system.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"324-337"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219412","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

Fault Diagnosis Method for Hydrogen Production Power Supply Based on EEMD and Dual-path Parallel Processing 基于EEMD和双路并行处理的制氢电源故障诊断方法

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Chinese Journal of Electrical Engineering Pub Date : 2026-09-01 Epub Date: 2026-10-19 DOI: 10.23919/CJEE.2026.000064

Jingxuan Zhang;Jiaxin Qie;Mingduo Li;Yan Dong;Wenzhong Zou;Weichao Dong;Xiaoze Bai;Hexu Sun

{"title":"Fault Diagnosis Method for Hydrogen Production Power Supply Based on EEMD and Dual-path Parallel Processing","authors":"Jingxuan Zhang;Jiaxin Qie;Mingduo Li;Yan Dong;Wenzhong Zou;Weichao Dong;Xiaoze Bai;Hexu Sun","doi":"10.23919/CJEE.2026.000064","DOIUrl":"https://doi.org/10.23919/CJEE.2026.000064","url":null,"abstract":"To enhance the accuracy and robustness of open-circuit fault diagnosis in hydrogen production power supply (HPPS) systems, a dual-path parallel network named EEMD_6-GADF-SG-Net is proposed. Firstly, ensemble empirical mode decomposition (EEMD) is employed to decompose three-phase input current data acquired from 22 distinct open-circuit fault states, and the 6th-layer intrinsic mode function (IMF) is selected, referred to as EEMD_6, which exhibits the strongest noise resistance, based on the Pearson correlation coefficient. This component is then converted into Gramian angular difference field (GADF) images. Afterwards, the Swin Transformer module extracts local features, while the GAM module captures global features. Finally, these two features are fused and fed into the fully connected layer for classification. The proposed approach achieves high diagnostic accuracy, reaching 99.89% under grid frequency offset and 97.73% under variations in alkaline solution resistance. Experimental validation on a test platform further confirms its performance, with an accuracy of 99.55%.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"12 3","pages":"260-277"},"PeriodicalIF":4.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11739813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219373","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