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Editorial board

Counselor:

CHEN BoshiMA Xiaoliang

Director:

LIU Guolin

Academic Director:

XU Dianguo

Members:

WANG YouyunWANG YueLIU GuolinLIU GuohaiHUA WeiLI YongdongYANG MingYANG BinWANG LeiZHANG XingZHANG HeshengZHANG ChenghuiJI PengGAO QiangXIE LunCAI XuTAN Guojun

Founded in 1959, electric drive is in charge of Tianjin Electric Research Institute Co., Ltd. (formerly Tianjin electric drive design and Research Institute), sponsored by Tianjin Electric Research Institute Co., Ltd. and China automation society. It is an authoritative core journal in the field of electric drive automation in China, and the statistical source journal of Chinese scientific and Technological Papers (Chinese scientific and technological core journal) RCCSE, a Chinese core journal, was selected as one of the journals. It is a dual effect Journal of China's journal matrix, an excellent journal of Tianjin, and a first-class Journal of Tianjin. It is publicly distributed at home and abroad.

With the purpose of "reporting the advanced technology and product trends in the field of electric drive automation at home and abroad, publishing scientific research achievements and summarizing practical experience, promoting scientific and technological exchanges, communicating industry and product information and cultivating talents", it has been published by the database of Japan Science and Technology Promotion Agency (JST), the database of Chinese Core Journals (selection), VIP, Wanfang Super star and other well-known databases at home and abroad have been included in Peking University's "overview of key items of Chinese Core Journals" for 8 consecutive times, which has a wide impact on relevant industries at home and abroad.

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Review on Control Strategies of VC-DFIG
Issue 22, 2022 download preview

LIN Xin，GAO Xiang，XIE Zhen，XU Kebao，ZHANG Xing

Abstract: With the increasing proportion of wind turbines，the characteristics of low inertia and weak dampingpower grid become more obvious，which brings new challenges to the smooth operation of power grid. Traditionalcurrent-controlled strategy is difficult to obtain accurate grid synchronization information in weak power grid byusing...更多
Control Strategy for Smooth Switching Between Voltage Source and Current Source in Dual-mode Operation of DFIG
Issue 22, 2022 download preview

LI Zhenbo，DAI Linwang，LI Shaolin，ZHANG Xueguang

Abstract: At present the mainstream of doubly-fed induction generators（DFIG）control mode is the currentsource type vector control mode，which is lack of independent of frequency and voltage support ability，but the voltage source type virtual synchronous machine control method can solve the shortcomings. In order to meet therequirements ...更多
Passivity-based Control Method with Dual-PCHD Model of MMC Under Unbalanced Grid
Issue 22, 2022 download preview

TIAN Guangping，XUE Hua

Abstract: In response to the stable operation demand of modular multilevel converter（MMC）with singlephaseshort circuit fault，a passivity-based method based on dual-port controlled Hamiltonian with dissipation（Dual-PCHD）model was proposed. To make the grid-connected positive sequence and negative sequence currentsubsystems have synchron...更多
Hybrid Topology Wireless Charging System Based on Variable Parameters
Issue 22, 2022 download preview

LI Xin，LI Yundi，JIANG Jie，FU Xueguang

Abstract: In the process of using wireless power transfer（WPT）technology to charge batteries，constant current （CC）-constant voltage（CV）charging mode is adopted to ensure battery life and safety. Therefore，a hybrid topology of series-series（SS）and inductor-inductor-capacitor（LLC）topology was proposed. Based on the SS topology，an additio...更多
Design and Simulation of Helicopter Aviation Electromagnetic Transmitting Coil
Issue 22, 2022 download preview

LIU Weijie，ZHANG Yiming，CUI Longfei，ZHANG Dong，WANG Xuhong

Abstract: The transmitting coil in the aviation electromagnetic transmitting system was took as the researchobject，considered the influence of the parameters of the transmitting coil on the peak value of the transmitting current，used finite element software，the coil model was established. The skin effect and proximity effect caused by ...更多
Microgrid Dispatching Optimization and Comparative Analysis Based on GA and IPSO
Issue 22, 2022 download preview

YU Xinhai，WANG Xin，SU Riguge，ZHANG Xiaoju

Abstract: Microgrid is an effective method to integrate distributed power supply into power grid. The optimaloperation of microgrid can effectively improve the utilization efficiency of renewable energy. The objectiveoptimization model was established，considering the economy of microgrid operation，the volatility of distributedpower sou...更多
Capacity Configuration Optimization of Cogeneration System for Independent Photohydrogen Fuel Cell
Issue 22, 2022 download preview

SHEN Hangyu，FAN Xiaochao，SHI Ruijing，WANG Weiqing， WANG Haiyun，CHENG Zhijiang

Abstract: In order to solve the problem of heat dissipation in the process of producing hydrogen fromelectrolytic water and generating electricity from fuel cells，an independent photohydrogen fuel cell thermoelectriccombined supply system was designed according to the principle of water cooling heat dissipation betweenelectrolytic cell...更多
Charging Facility Distribution Optimization Method Considering Power Quality Constraints
Issue 22, 2022 download preview

XU Changbao，DING Jian，SONG Hongjian，PAN Chengda， SUN Pengbo，WANG Qihua，CHEN Hui

Abstract: An optimization method was proposed to layout electric vehicle charging facilities consideringpower quality constraints. A comprehensive power quality index model considering the average value of nodalthree-phase unbalance degree and the maximum value of nodal voltage deviation was established. Meanwhile，themathematical model...更多
Alarm Association Rules and Decision Tree Algorithm for Power Grid Dispatching Based on Knowledge Graph
Issue 22, 2022 download preview

QIAN Xiao，MA Xiang，LÜ Leiyan，ZHANG Wenjie，WANG Ning，ZHI Yuemei

Abstract: Traditional power grid dispatching alarm algorithm has low alarm instruction operation efficiency，low power grid dispatching failure burst rate and high alarm error alarm rate，so the power grid dispatching alarmassociation rules and decision tree algorithm based on knowledge graph were proposed. The association rulesalgorithm...更多
Non-intrusive Load Identification Method Based on BP Neural Networks Hancement Algorithm
Issue 22, 2022 download preview

HE Hengjing，ZHOU Shangli，ZHANG Bensong，XIE Wenwang，LIAN Xinkai，XU Haotian

Abstract: In order to apply the non-instrusive load montiring technology into the new generation of smartmeter，a kind of method based on the BP neural networks enhancement algorithm of clustering for loadidentification was presented. In this method，each feature was relatived to the corresponding cluster based on the BP neural network. ...更多

Design and Simulation of Helicopter Aviation Electromagnetic Transmitting Coil
Issue 22, 2022 download preview

LIU Weijie，ZHANG Yiming，CUI Longfei，ZHANG Dong，WANG Xuhong

Abstract: The transmitting coil in the aviation electromagnetic transmitting system was took as the researchobject，considered the influence of the parameters of the transmitting coil on the peak value of the transmitting current，used finite element software，the coil model was established. The skin effect and proximity effect caused by ...更多
Dynamic Characterization Study on Series Short-circuit of SiC MOSFET and Si IGBT
Issue 21, 2022 download preview

ZHANG Tian，SONG Mingxuan，FENG Yuan，HE Fengyou

Abstract: Aiming at the series short-circuit phenomenon caused by device breakdown and control failure，based on the half-bridge structure，the different series short-circuit dynamic sharing voltage characteristics of SiCMOSFET and Si IGBT were analyzed. At the same time，the principle of series short-circuit voltage sharing wasanalyzed c...更多
Vector Control of Stand-alone Doubly-fed Wind Power Generation System Under Unbalanced Loads
Issue 20, 2022 download preview

ZHANG Fangyuan，JING Yun，WANG Dan

Abstract: A vector control method based on the modified super-twisting observer and non-singular terminalsliding mode was proposed for stand-alone doubly-fed wind power generation systems under unbalanced loads. The fundamental frequency and double frequency components of the rotor current were observed by the modified supertwisting ob...更多
Adaptive Cooperative Control Based on Improved VSM for Traction Power Supply System of Urban Rail Traffic
Issue 17, 2022 download preview

YANG Chengshun，LIU Guofu，DAI Yuchen，ZHANG Dongdong，HUANG Xiaoning

Abstract: An adaptive cooperative control strategy based on improved virtual synchronous machine（VSM）technology was used to improve the traction power supply system of urban rail transit. Firstly，the improved VSMwas used as an one-time control to make the urban rail trains have the external characteristics of synchronousmachine and cer...更多
SOC Estimation of Battery Based on DFFRLS and Neural Network-ASRUKF Algorithm
Issue 17, 2022 download preview

GU Zhongfan，CHENYuwei，LI Cheng′ao，ZHANG Dechun，HUANG Hai

Abstract: The 3.5 V/20 A•h lithium iron phosphate battery was taken as the research object.Aiming at the onlineestimation of its state of charge（SOC），the second-order Thevenin equivalent RC circuit model was established，and a joint SOC estimation algorithm was proposed by combining BP neural network，dynamic forgetting factor recursive ...更多
Design and Application of Fault Diagnosis Strategy for Circuit Breaker Based on Segmented FFT
Issue 15, 2022 download preview

CHAI Bin，SHI Lei，LIU Zhiyuan，XU Hui

Abstract: The circuit breaker of AC filter in converter station is an important part of HVDC system. Theoccurrence of internal faults will directly affect the stable operation of HVDC system. In view of the fault diagnosisof the circuit breaker for filter，an efficient online monitoring method was proposed to diagnose the health status ...更多
Analysis of the Influence of High-order Electromagnetic Force Waves on the Vibration Characteristics of IPMSM for Electric Vehicles
Issue 13, 2022 download preview

HE Wendan, LI Xiaohua, ZHAO Rongjian, FENG Anhui

Abstract: The main vibration of interior permanent magnet synchronous motor（IPMSM）with integer slot multipole pair for electric vehicles is the vibration at 0-order and 2p-order natural frequencies, which are generally believed to be caused by the spatial electromagnetic force waves of 0-order and 2p-order. In order to study the contri...更多
Start-up Control Method of PMSM Air-conditioner Compressor
Issue 10, 2022 download preview

XIANG Baicheng，LI Sheng，XU Zheng，LI Guangming

Abstract: Regarding the problem of instability in the start-up process of permanent magnet synchronous motor（PMSM）air-conditioner compressor caused by different operating conditions，and combined with the characteristics of shaft error speed closed-loop control，a set of three-stage start-up application program pertinent to rotor positio...更多
Short-term Load Forecast of Industrial Park Based on Deep Data Aware
Issue 06, 2022 download preview

HU Bo，LI Tong，WANG Yihe，CUI Jia，YANG Junyou，XU Junjin

Abstract: Combined with the feature extraction ability of self-coding and the time series analysis ability oflong short-term memory（LSTM），a short-term load forecasting model based on LSTM self-coding was proposed.First of all，based on the basic principle and flow of the depth model，the functional characteristics of the automatic encoder...更多

Application Problems of High-performance Inverter-fed Motor Drive Systems
Issue 02, 2020 download preview

MA Xiaoliang

Abstract: Several problems and their solutions of high-performance inverter-fed motor drive systems wereintroduced: the features and some matters needing attention of two- closed-loop systems; how to improve speedfollowing performance during starting and breaking and to improve anti-disturb ability by means of predictive control technique...更多
Review on Control Strategies of VC-DFIG
Issue 22, 2022 download preview

LIN Xin，GAO Xiang，XIE Zhen，XU Kebao，ZHANG Xing

Abstract: With the increasing proportion of wind turbines，the characteristics of low inertia and weak dampingpower grid become more obvious，which brings new challenges to the smooth operation of power grid. Traditionalcurrent-controlled strategy is difficult to obtain accurate grid synchronization information in weak power grid byusing...更多
Small-signal Stability Analysis of Multiple-grid-connected-converter System：An Overview
Issue 20, 2022 download preview

WANG Xiaoyang，ZHAO Jinbin，ZHU Yuxin

Abstract: With more and more renewable energy devices and loads connected to the traditional power grid bypower electronic equipment，the negative resistance characteristics of power electronic equipment lead to the weakinertia characteristics of high power electronic power systems. Therefore，the stability of the multiple-grid-connected...更多
Analysis and Treatment of Power Quality in the Background of Microgrid
Issue 18, 2022 download preview

ZHOU Jinghua，YAN Tianle，GUO Leixuan，ZHANG Xiaowei

Abstract: With the high penetration rate of new energy power generation in microgrids and the application ofhigh proportion of power electronic equipment，coupled with the access of a wide variety of loads such as unbalanced and non-linear loads and energy storage device，the power quality problems in microgrids have become increasingly ...更多
Analysis on Promotion Effect of High-efficiency Motor System
Issue 18, 2022 download preview

MA Xiaolu，WANG Zhixiong，DUAN Yanmin，ZHANG Lei，WU Yi，QI Zhuoya，HOU Jue

Abstract: The significance of promote high-efficiency motor and motor system in China was analyzed bymeans of literature research，questionnaire survey and enterprise survey. Policies and measures for the promotion of high-efficiency motors and motor systems were sorted out. Conduct market research on high-efficiency motors and pumps，fa...更多
Development and Enlightenment of Demand Response in US Electricity Market
Issue 16, 2022 download preview

CUI Kaishun，ZHU Lan，WEI Linlin，TIAN Zeqing，LI Xiaojun

Abstract: Demand response to meet the power balance between supply and demand in the new generationresources without investing. The achievement of China's carbon neutrality goal by 2060 will surely bring aboutprofound changes in the structure of energy supply and demand. The effective development of demand-side resources is conduci...更多
Review on Real-time Modeling Technology and Key Issues of Distribution Network
Issue 12, 2022 download preview

YU Jia，Wang Xiaorong，Dai Yuesheng，LI Xuan

Abstract: With the advance of smart power grid construction，the terminal laying rate of intelligent acquisitionequipment has been greatly improved，and the demand-side terminal electrification has become an irreversible trend.In recent years，the problems of users' default power supply and private overlapped lines in low-voltage dist...更多
A Review of Fault Diagnosis Technology of Flight Electromechanical Actuation System
Issue 09, 2022 download preview

YANG Zhenshu，SUN Xiaozhe，YANG Jianzhong，MAO Qi

Abstract: The fault diagnosis technology of the flight electromechanical actuation system is of greatsignificance to improve the reliability of the aircraft actuation system and ensure the safe operation of the aircraft.Considering the problems and challenges encountered in the application of fault diagnosis technology in the flightele...更多
Foreign Experience and Practical Enlightenment of the High Proportion Access of Distributed Photovoltaic High-proportion
Issue 04, 2022 download preview

CAO Wei，DONG Haoyang，LI Yun，WEI Huangli，GAO Shengkai

Abstract: The proportion of distributed photovoltaic connected to the grid is gradually increasing，which bringsa series of problems，it can draw lessons from foreign experience to provide practical reference for solving relevantproblems. As one of the leading countries of energy transformation in Europe，Germany's experience in renewabl...更多
New Applications of Frequency Converters——Variable Speed Pumped-storage Hydropower Facilities
Issue 02, 2022 download preview

MA Xiaoliang

Abstract: Pump-turbine units are kind of hydropower facilities with both pump and power generation abilities，they are used mainly in pumped-storage plants and also in water-managing projects. Conventional units operate withfixed-speed. To make power control quick and flexible and to extend operation ranges of turbines as well as improve...更多

Application Problems of High-performance Inverter-fed Motor Drive Systems
Issue 02, 2020 download preview

MA Xiaoliang

Abstract: Several problems and their solutions of high-performance inverter-fed motor drive systems wereintroduced: the features and some matters needing attention of two- closed-loop systems; how to improve speedfollowing performance during starting and breaking and to improve anti-disturb ability by means of predictive control technique...更多
Dynamic Characterization Study on Series Short-circuit of SiC MOSFET and Si IGBT
Issue 21, 2022 download preview

ZHANG Tian，SONG Mingxuan，FENG Yuan，HE Fengyou

Abstract: Aiming at the series short-circuit phenomenon caused by device breakdown and control failure，based on the half-bridge structure，the different series short-circuit dynamic sharing voltage characteristics of SiCMOSFET and Si IGBT were analyzed. At the same time，the principle of series short-circuit voltage sharing wasanalyzed c...更多
Research on Offset Characteristics of Three Coupling Coils in Wireless Charging System
Issue 21, 2022 download preview

LI Mingyang，NIU Pingjuan，LI Yuhong，LI Ying，SUI Yu

Abstract: The offset characteristics of transmitting and receiving coils manufactured by different wirelesselectric vehicle manufacturers are a critical issue to ensure the interconnection of domestic and international vehiclecharging. The 3.7 kW wireless energy transmission system was modeled and the SS-type topology of wirelesschargi...更多
Research on Topology of DC Transformer with Power Balance System
Issue 21, 2022 download preview

DING Runchu，SHI Shuhuai，ZHUO Fang，WANG Feng

Abstract: The application of DC transmission and distribution network faces a variety of complex designscenarios，among which there are DC/DC conversion requirements with unipolar input and really bipolar output. The bipolar output of this application scenario can easily lead to unbalanced output voltage when the load is unbalanced，whic...更多
A Three-level Neutral-point Balance Method Based on PWM Pulse Width Dynamic Regulation
Issue 21, 2022 download preview

TIAN Kai，YUAN Yuan，YU Zhibin，JIANG Yida，LI Nan，SONG Peng

Abstract: Three-level neutral-point balance method based on PWM pulse width dynamic regulation wasproposed to realize optimized PWM high-performance closed-loop control and three-level neutral-point balancecontrol of the inverter at low switching frequency. The fundamental current component was extracted from thecurrent observer，and th...更多
Research on Online Test Method for Real Time Switching Characteristics of Three-level Inverter System
Issue 21, 2022 download preview

SONG Mingxuan，FENG Yuan，ZHANG Tian，HE Fengyou，GAO Jie

Abstract: Aiming at the lack of realtime detection methods of operation status for NPC three-level inverter，anindirect detection method was studied. In this method，the commutation process of NPC three-level inverter wasanalyzed. And according to Kirchhoff's law，the current and voltage models of three-level circuit test were built.C...更多
Anti-offset Wireless Power Transfer System Based on Parameter Optimization
Issue 21, 2022 download preview

WANG Peng，LI Zhongzhao，GONG Zhaowei，ZHANG Ningchao

Abstract: In order to solve the problem of coupling mechanism offset in wireless power transfer system，theS-S and LCC-LCC dual topological wireless power transfer system based on parameter optimization was proposed.Firstly，the output characteristics of S-S and LCC-LCC topological energy transmission channels were analyzed.According to ...更多
Design and Characteristics Analysis of Fault-tolerant DC-APF for DC Microgrid
Issue 21, 2022 download preview

GAO Xiaozhi，QIAO Yu，CAO Xin，LI Zheng，SUN Huiqin，SUN Hexu

Abstract: DC active power filter（DC-APF）can effectively suppress the bus voltage ripple of DC microgrid. Inorder to solve the problem that DC-APF can not work normally due to the failure of switching devices，a fault-tolerant DC-APF topology based on H-bridge converter was proposed，which could ensure the power quality management functio...更多
Fast Reclosing Strategy of DC Network Based on MMC and DCCB Coordination
Issue 21, 2022 download preview

YE Hai

Abstract: Flexible DC power grid is an important way for efficient transmission of various types of renewableenergy. How to design an efficient reclosing strategy to make it have the ability of rapid recovery after fault is a keyproblem to improve the stability of the whole AC/DC power grid. According to the working mechanism of DC cir...更多
Power Grid Maintenance Optimization Decision Method Based on Maintenance Value Evaluation
Issue 21, 2022 download preview

WANG Chun，WU Pengtao，GUO Bin，LÜ Jing，HUANG Hongwei，MAO Wenzhao

Abstract: In order to improve the efficiency of power grid equipment maintenance，an evaluation index ofequipment maintenance value based on Markov model was proposed，and an optimization decision method of power grid maintenance based on maintenance value evaluation was constructed. The value evaluation index of power grid equipment mai...更多