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TAO Li，YANG Xiaxi，GU Jinhui，WEI Bingbing，ZHANG Lin，WANG Jianing
Abstract: Virtual power plant（VPP）can integrate distributed energy resource（DER）to participate in theoperation of power market and auxiliary service market，and provide management and auxiliary services fordistribution network and transmission network. Its operation and control have been widely concerned. Aiming at t...
更多Number of views：1234 Amount of downloads：1161
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WU Zhiheng，LIU Aimin
Abstract: The motor actuator used in circuit breaker has the advantages of simple structure，small dispersal ofaction and strong controllability，which provides the possibility for the switch contact of circuit breaker to followthe preset reference curve. The traditional control method can not adjust the parameters ac...
更多Number of views：1230 Amount of downloads：996
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YAN Yulin，XIAYankun，LIU Liyou
Abstract: In order to achieve equal current, a constant current source should be used to drive the LEDs. Aconstant current source based on two output Cuk improved circuits was proposed. The circuit structure, workingmode and constant current principle were analyzed, and the voltage, current and power expressions wer...
更多Number of views：1229 Amount of downloads：1230
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LIU Fang，XU Yunyu，HE Guoqing，LI Guanghui，LIU Shiquan，LIU Wei
Abstract: With the increasing permeability of distributed generation，the grid becomes weaker and weaker. Itis very important to help the system achieve low voltage ride through（LVRT）when the grid voltage drops underweak grid. Aiming at a series of problems such as over-current，voltage collapse and system oscillation...
更多Number of views：1228 Amount of downloads：1399
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LIU Kai，LI Gang，WANG Xin
Abstract: According to the 90 s regular breaking and 15 s emergency breaking requirement for 60 MW axialcompressor used in some large scientific facility，a control strategy of electric hybrid breaking in the convertor wasdesigned. The hybrid braking control strategy was analyzed and calculated，and the optimal brakin...
更多Number of views：1227 Amount of downloads：1584
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YUE Xuelei，WANG Lei，TIAN Di，XU Kelei
Abstract: Permanent magnet synchronous motor（PMSM）has become the development direction of the newgeneration of rail transit traction system due to its characteristics of high efficiency and high power density. Amongthem，the research on the identification method of the initial position and frequency of the motor roto...
更多Number of views：1226 Amount of downloads：1440
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JIANG Jingwen，ZHOU Jiemin，HONG Feng，ZHENG Gang
Abstract: On the basis of LLC，considering from the perspectives of soft-switching technology，DC/DCcascade converter technology and three-level technology，a new DC/DC composite cascade structure topology onthe basis of Buck-LLC structure was proposed. A 980 W prototype was designed and built for verification，whichpro...
更多Number of views：1225 Amount of downloads：1154
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WANG Yajing，ZHANG Shuai，JIANG Han，SONG Hongliang
Abstract: In order to improve the carrying capacity and resilience margin of the distribution network systemcontaining microgrid，a topological resilience optimization model of the distribution network system containingmicrogrid was established to achieve the resilience optimization objective of the distribution netw...
更多Number of views：1222 Amount of downloads：1240
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LIU Lingshun，LI Yongheng，YAN Hongguang
Abstract: A nine-switch converter space vector pulse width modulation（SVPWM）algorithm was proposedbased on the dual Y shift 30° permanent magnet synchronous motor（PMSM）voltage vector. Compared with thebiggest four vectors of the twelve-switch converter SVPWM algorithm，the proposed algorithm not only reducesthree swi...
更多Number of views：1220 Amount of downloads：1282
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JIA Pengfei，HE Yongpeng，YANG Jianxin，ZHANG Qing，WU Wenda
Abstract：Industrial communication technology is an effective way to achieve network control of industrialequipment. With the development of Ethernet technology in recent years，a top layer application technology basedon Ethernet，PROFINET has rapidly developed. However，due to the lack of high-speed network interfaces ...
更多Number of views：1217 Amount of downloads：1378
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CUI Qian，ZHOU Jiemin，DING Zhengdao，QIN Jina，GAO Yiqing，JIANG Pengchuan
Abstract：In order to solve the problem of overvoltage and overcurrent in the process of load sudden changefor ion thruster screen grid power supply，the phase shift pulse frequency modulation（PS-PFM）was used tostabilize the output voltage of the LLC resonant converter. When the sampling voltage is lower than the lowe...
更多Number of views：1215 Amount of downloads：2285
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ZHOU Ning
Abstract：Focusing on the central position of AC power frequency converter in the development of the nationaleconomy，emphasizingd their critical impact on the safety and efficiency of industrial production. In view of the rapid development of power electronics technology，the field of AC power frequency converter has ...
更多Number of views：1206 Amount of downloads：1341
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WANG Yubo，AN Yang，QIU Shuming，GAO Zhuoxuan，SUN Furun
Abstract：Inverter products have been developing towards higher power density and more compact structure.To enhance the power density of inverter systems within a limited structural space，several prototypes need to bemade and a large number of experiments conducted during the research and development process. To shor...
更多Number of views：1205 Amount of downloads：1255
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NIU Zongxian，FAN Bo，FU Yulin，WANG Chunguang，WU Xiaodan，YANG Chenhui
Abstract: Under traditional PI parallel control strategies，synchronous control systems of multi-motor rigidconnection structure have the problem of unbalanced motor torque output，and there is even a serious risk of shaftbreakage. Taking the rigid connection structure of multi-motor gear transmission as the research ...
更多Number of views：1205 Amount of downloads：1121
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TIAN Jiabin，YANG Chuanjiang，LI Junda，GU Jiateng，ZHANG Zhenbin
Abstract: The doubly-fed induction generator（DFIG）is the mainstream model in the wind power market.Since there are multiple time-scale control objectives in the wind turbine，it is difficult for conventional linearcontrol methods to optimize the multi-objective. Model predictive control（MPC）is an effective method for...
更多Number of views：1197 Amount of downloads：1244
