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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 mul...
更多Number of views：3125 Amount of downloads：2012
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YANG Zhaowen，YANG Guochao，LIU Jianjun，WANG Hongwei，BAI Xinyu
Abstract: A second order filtering power dividing frequency control strategy based on virtual impedance wasproposed. The different frequency power compensation among different storage units by building invisible passfilters was achieved. The invisible pass filters including high pass filter and low pass filters were...
更多Number of views：3779 Amount of downloads：2004
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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 measure...
更多Number of views：3944 Amount of downloads：2002
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YAN Chengshan，QIU Mingquan，ZHANG Lijun，ZHANG Guorui，WANG Chunlei
Abstract: Aiming at the problems of regional large-scale photovoltaic construction and access，as well as thelack of control of existing distributed energy，the construction and operation control method of microgrid groupwere put forward，which extracted a three-level and two-stage coordination and interaction system s...
更多Number of views：971 Amount of downloads：1995
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FENG Qiao，WANG Na
Abstract: In order to improve the control performance of permanent magnet synchronous motor（PMSM）servosystem，weaken the influence of uncertainty in the system，and solve the chattering problem in traditional SMCtechnology，a dynamic sliding mode control（DSMC）method was proposed. Firstly，based on the PMSMmathematical m...
更多Number of views：3769 Amount of downloads：1992
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YAN Yuhao，ZHOU Buxiang，CHEN Shi，DONG Shen，LIU Zhifan，ZANG Tianlei
Abstract: At present，the focus of research on doubly fed induction generator（DFIG）high voltage ride through is a single high voltage fault.However，after DFIG low voltage ride through，due to the irrationality of the reactive power compensation strategy，a low/high voltage compound fault have be caused，which have a cer...
更多Number of views：3031 Amount of downloads：1981
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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 recognit...
更多Number of views：3821 Amount of downloads：1926
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ZHANG Chao，QIU Han，LI Zhe，LIU Bochang，Zhang Baoshun，LI Chengyuan
Abstract: A control strategy of off-grid start-up of energy storage system（ESS）was proposed，which canmake all power converter systems（PCSs）entered off-grid mode smoothly and quickly in MW level battery energystorage power station，and make off-grid voltage set up. The unified off-grid phase angle and enable signal we...
更多Number of views：3309 Amount of downloads：1910
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ZHENG Weijie, SUN Tianfu, LAI Yueshen, SHANG Yaceng
Abstract: Aiming at the problem that the low-speed sensorless control system of interior permanent magnetsynchronous motor (IPMSM) based on high-frequency voltage signal injection method cannot identify the initialposition of the rotor, which causes the motor to start up difficultly, a starting strategy of IPMSM was ...
更多Number of views：4167 Amount of downloads：1902
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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 m...
更多Number of views：2465 Amount of downloads：1899
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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 tem...
更多Number of views：3855 Amount of downloads：1888
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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 operat...
更多Number of views：3865 Amount of downloads：1887
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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 contr...
更多Number of views：3989 Amount of downloads：1872
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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...
更多Number of views：3278 Amount of downloads：1862
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LIU Sheng
Abstract: Voltage and current balance plays an important role in ensuring the normal operation of DC microgrid.Therefore，a new distributed voltage and current control method was proposed to realize the current sharingand voltage sharing regulation of DC micro-grid. The considered DC micro-grid was composed of severa...
更多Number of views：3700 Amount of downloads：1860
