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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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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
Partial Discharge Pattern Recognition of GIS Based on Deep Forest Model
Issue 09, 2022 download preview

LIU Dongchao，XIONG Muwen，GAO Sen，ZHAO Senlin，ZHU Herong，LI Haitao

Abstract: Different types of partial discharge (PD) in gas insulated switchgear (GIS) cause different damage toGIS insulation. Correctly identifying the type of partial discharge is very important to evaluate the insulation statusof GIS. In order to simplify the process of feature extraction and improve the recognition rate of PD types...更多
Design of Switched Reluctance Motor Integrated Power Converter for Electric Vehicle
Issue 09, 2022 download preview

SUN Lihua，ZHANG Lin，SUN Huiqin，GUO Yingjun，LI Zheng，GUO Tianliang

Abstract: The switched reluctance motor control system for electric vehicles includes motor drive and batterycharging circuit，which reduces system integration and power density. Based on the asymmetric half-bridge powerconverter of switched reluctance motor，an integrated power converter for electric vehicle was designed. The front-end ...更多
Dynamic Equivalent Modeling for Power Converter in Wide-range by Using Deep Learning Method
Issue 09, 2022 download preview

HU Bo，YANG Chao，TIAN Xiaolei，LI Yunlu，YANG Junyou，CUI Jia

Abstract: When the internal parameters and topology of grid-connected power converter is unknown in somepractical applications，the existing frequency scanning based impedance modeling method can only maintain thedynamic equivalence at one operating point. To ensure the effectiveness of dynamic model in a wide operatingrange，a deep lear...更多
Heat Dissipation Structure Design of High Power IGBT Module Based on Fluid-Solid Coupling
Issue 09, 2022 download preview

GAO Fengliang，HUANG Xiongfeng，FAN Hongxing，ZHANG Xuankun

Abstract: The failure rate of IGBT devices caused by excessively high temperature is as high as 55%.Improving the heat dissipation efficiency of the heat sink is the basis for ensuring the safe and reliable operation ofIGBT devices. Through theoretical analysis of IGBT module water cooling and heat dissipation，a temperature risecalcula...更多
Negative Sequence Current Compensation Strategy for Three-phase Bridge Converter
Issue 09, 2022 download preview

ZHOU Liying，XIA Changhao

Abstract: Three-phase bridge converters（TPBC）are widely used in low-voltage power distribution networksto compensate the negative-sequence current and the reactive current. Because of the relatively high costs，improving the compensation effect of limited capacity equipment has high economic value and research significance.The feasible ...更多
Impact of Non-uniform Current in Parallel Power Terminals on IGBT Temperature Characteristics
Issue 09, 2022 download preview

ZHANG Lantao，XIONG Jun，NIU Xiaonan，HUANG Xiaoyu

Abstract: Aiming at the reliability problem of high-power IGBT modules under short circuit extreme operatingconditions，the power terminals imbalanced current of IGBT modules and the resulting dynamic junctiontemperature change were comprehensively analyzed. Firstly，the current sharing characteristics of parallel terminalsof an Infineon...更多
Evaluation Method of Day-ahead Optimal Operation Based on Multi-energy Complementary Power Generation
Issue 09, 2022 download preview

LIU Chunhui，ZHANG Zheng，FAN Hongzhen，MOU Huilong，HUANG Cunkuan，YUAN Fang

Abstract: Multi-energy complementary generation operation had become a new direction to improve theefficiency of new energy utilization，and it is particularly important to analyze the characteristics of multi-energycomplementary generation. According to the operation characteristics of multi-energy complementary generationsystem，combin...更多
Method for Establishing Distribution Network Overvoltage Data Set for Deep CNN
Issue 09, 2022 download preview

JIA Junqing，LÜ Chao，LIU Dinghua，XU Hao

Abstract: With the rapid development of artificial intelligence algorithms，convolutional neural networks withfewer layers have been used in distribution network overvoltage recognition. The deep-level network has a higherrecognition rate，but requires a large number of data samples. At present，the amount of data in the existing data set...更多
A Single-stage Low Switch Stress Electrolytic Capacitors-less LED Power Supply
Issue 09, 2022 download preview

ZHAO Kuanxiang，YOU Jiawei，LIU Hongxun，LING Yuesheng，TIAN Rui

Abstract: The electrolytic capacitor is used as the energy storage element in the traditional LED power supply.The life of electrolytic capacitor is short which limits the life of LED power supply. In order to improve the servicelife of the power supply，a single-stage low switch stress structure was proposed on the basis of removing th...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
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
Overview of New Energy Vehicle Drive Motor Hardware-in-the-loop Simulation Technology
Issue 01, 2022 download preview

WANG Zhifu，SUN Qingle，LI Haolong，WANG Xu，GUO Yifeng，LIANG Changchun，WANG Rui

Abstract: With the development of motor drive system of new energy vehicle and the increase in complexity and integration，testing of motor drive system has become an important part of vehicle development. But high-power motor drive testing is more difficult and has higher risks，especially for motor control system，traditional bench and ...更多
Review of Power Conversion System Control Strategies for Microgrid
Issue 21, 2021 download preview

CHEN Ya’ai，LIN Yankang，ZHOU Jinghua

Abstract: The power conversion system in microgrid adopts flexible control strategy to supply the demand loadafter transforming various energy sources. The power conversion system enables the microgrid to be connected tothe grid as a controllable whole unit or to operate independently. Its control strategy is particularly important for ...更多
Summary of Control Strategies for VIENNA Rectifier
Issue 09, 2021 download preview

CHEN Ya′ai，LI Zixuan，ZHOU Jinghua，WU Jiewei

Abstract: As a three-level Boost AC/DC converter with unidirectional energy flow，the VIENNA rectifier iswidely used in electric vehicle charging systems and other occasions. The key to improve the power quality and thesystem reliability is the quality of control strategy. Therefore，the control strategy of the VIENNA rectifier hasbecome ...更多
Summary of Control Strategies for Cascaded Energy Storage Power Conversion System
Issue 07, 2021 download preview

CHEN Ya′ai，HONG Yinan，ZHOU Jinghua，ZHAO Junwei

Abstract: Cascaded energy storage power conversion system is widely used in high voltage and large capacityoccasions，it plays a role of peak shaving and valley filling for power system，its control strategy directly affects theperformance and reliability of energy storage system. Therefore，in recent years，the research on the control stra...更多
Research on Model Predictive Current Control of Dual Three Phase Permanent Magnet Synchronous Motor
Issue 06, 2021 download preview

SONG Wenxiang，REN Hang

Abstract: Six phase inverter provides abundant voltage vector resources for dual three-phase permanentmagnet synchronous motor，which can make predictive current control more accurate. However，more voltagevectors cause the problem of too much calculation. At the same time，the harmonic current of dual three-phase motor will increase the m...更多
Rotor Radial Displacement Estimation Strategy for Bearingless Permanent Magnet Synchronous Motor
Issue 06, 2021 download preview

ZHANG Hannian，ZHANG Tao

Abstract: The key of stable suspension of bearingless permanent magnet synchronous motor is the closed-loopcontrol of rotor radial position displacement. Usually，the high performance suspension operation of the motor relies on displacement sensor，which destroys the robustness of the motor structure and hinders the low-cost practicabilit...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
Simplified Speed Control Strategy Based on Genetic Algorithm for PMSM
Issue 08, 2022 download preview

LIU Mengmeng，LI Ruifang，MIAO Weili

Abstract: In order to optimize the controller structure of the permanent magnet synchronous motor（PMSM），a simplified speed control strategy for the PMSM based on genetic algorithm（GA）was proposed.The new controller mainly includes a direct voltage controller，which uses the motor model to achieve accurate speed tracking，so the closed lo...更多
Secondary Frequency Regulation Technique Based on Virtual Synchronous Generator for Microgrid
Issue 08, 2022 download preview

PANG Lin，LU Xin，WU Zhanxia，WANG Xueliang，FU Meiming，ZHANG Hongming

Abstract: Traditional virtual synchronous generator（VSG）is a primary frequency regulation technique. Afterload power changes，the frequency of microgrid cannot return to the rated level，influencing the safety of the microgrid in a severe condition. In order to avoid steady-state errors under large load fluctuations，a secondary frequency...更多
Improved Impedance Measurement Method of New Energy Power Generation Equipment
Issue 08, 2022 download preview

ZHAO Jianyong，LI Han，WU Min，MA Runsheng，ZHAO Wenqiang，YU Ziwei

Abstract: Firstly，the significance of impedance modeling for new energy power generation equipment wasanalyzed，and the existing impedance modeling methods were explained. Aiming at the problems of low flexiblematching degree，single disturbance signal，fixed disturbance frequency and the inability of real-time measurement results on the ...更多
A Coordinated Control Strategy for Networked AC/DC Microgrid
Issue 08, 2022 download preview

NIU Qian，ZHANG Dong，WANG Junlong

Abstract: Aiming at the problems of uneven power distribution and poor stability of grid AC/DC microgrid，anew adaptive coordinated control strategy was proposed to improve the stability and power distribution accuracy ofAC/DC microgrid（MGs）system.First，for converters connectingAC microgrids and DC microgrids，a control strategy based on...更多
Pulsation Impact of HVDC Ground Pole Monopole Operation on Transformer
Issue 08, 2022 download preview

ZHOU Jiabin，CHEN Yufe，GU Zhaoliang，YONG Jun，ZHAO Wenbin，JIANG Pengliang

Abstract: The influence of magnetic bias current on the excitation characteristics of near-field transformers inthe DC grounding electrode from bipolar to unipolar earth mode was discussed. Based on the principle of field-circuit coupling，the DC magnetic bias co-simulation model of transformer was established and analyzed the actionmec...更多
Broadband Equivalent Modeling Method of Three-phase High Frequency AC/DC/DC Converter
Issue 08, 2022 download preview

ZHANG Yang，GAO Tian，LIN Weixing

Abstract: Photovoltaic inverter，charging pile，energy storage converter，wind power converter and othercommon power electronic equipment are three-phase high frequency AC/DC/DC converter，which is widely used inindustrial and civil fields. Due to the fast switching capability of three-phase high frequency converter，its highfrequency harmo...更多
Research on the Suppression of Subsynchronous Oscillation Based on the Coordinated Damping Control Technology of Hydrogen Production
Issue 08, 2022 download preview

MA Tianhui，MAWeiwei，GU Huaiguang，LIU Dong

Abstract: The modular multilevel converter（MMC）based high voltage direct current（HVDC）system（MMCHVDC）is an ideal solution for large-scale grid-connected and clustered offshore wind farms. But the interaction between the doubly fed induction generator（DFIG）and the MMC-HVDC system has a risk of subsynchronous oscillation（SSO）. To solve t...更多
A Neutral Point Potential Balancing Method for Two-stage Three-level Power Conversion System
Issue 08, 2022 download preview

LU Hai，ZHANG Xudong，DANG Junpeng，GUO Li，LIU Rui

Abstract: A 2-stage three-level power conversion system（PCS）was studied，in which the 3-level T-type 3-leg3-phase 4-wire（3LT23L3P4W）topology was adopted as AC/DC part while the 3-level Buck/Boost topology wasutilized as DC/DC interface. To address the neutral point potential（NPP）unbalance of the PCS，firstly，with theasymmetry extent and ...更多
Research on Topology Identification Method of Complex Low-voltage Platform Based on Cross Platform Multi-source Data Fusion
Issue 08, 2022 download preview

LI Xuan，DONG Yongle，HAI Hongye，JIN Zhao

Abstract: Under the background of smart grid，higher requirements are put forward for the management level of distribution network，and the traditional static model can not meet the application requirements of refined line loss and real-time scheduling. Based on low-voltage power grid topology identification and broadband power line carr...更多