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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 lo...
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Number of views:3637 Amount of downloads:1644
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YANG Shuying, WANG Qishuai, DONG-YE Yalan, XIE Zhen
Abstract: For interior permanent magnet synchronous motor(IPMSM) , accuracy of its discrete-time model isusually at the cost of complexity. To find out a way out of the dilemma, stator flux is chosen as the state variable,allowing its model be represented in the complex form and resulting in a concise model in appear...
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Number of views:3631 Amount of downloads:1601
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LIU Weizhi
Abstract: In high-power traction converter,SiC devices with many advantages such as fast switching speed,high temperature resistance and low switching loss are used to replace Si devices. The three-level active neutral-pointclamped(3L-ANPC)converter based on SiC devices can reduce the burden of heat dissipation syst...
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Number of views:3079 Amount of downloads:1584
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LING Chunyang,LIU Fang,LI Hao,ZHAO Yang
Abstract: SiC MOSFET devices have the characteristics of high switching frequency,low loss,and hightemperature resistance,which can significantly improve the power density and efficiency when used in wirelesscharging. However,in the control of the wireless charging converter,hard turn-on and hard turn-off are easy t...
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Number of views:3342 Amount of downloads:1576
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CAO Xinping, YIN Zhonggang, ZHANG Yanping, ZHANG Yanqing
Abstract: Aiming at the problems of chattering and poor observation accuracy of traditional full order slidingmode observer (FSMO), a sensorless control strategy of interior permanent magnet synchronous motor (IPMSM)based on improved full order sliding mode observer was proposed. In this strategy, the quasi-sign func...
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Number of views:3620 Amount of downloads:1546
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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 ...
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Number of views:2497 Amount of downloads:1531
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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...
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Number of views:3317 Amount of downloads:1503
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CHEN Yaai,ZHAO Junwei,ZHOU Jinghua,ZHAO Xun
Abstract:Flexible substation based on AC/DC hybrid power distribution technology is a major trend for futuredistribution network development.It has attracted wide attention due to multiple functions such as itsmultiterminal interfaces for medium/low and AC/DC voltage flexible power flow control multi-modal energy inter...
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Number of views:3622 Amount of downloads:1496
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ZENG Xiaotong,WANG Rongmao
Abstract: The Vce method and the Vth method are two recommended junction temperature measurement methods in the IGBT thermal resistance test standard. However,the relationship and equivalence of the junction temperature measured by the two methods are not explained. Firstly,the voltage composition of Vce and Vth was...
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Number of views:3132 Amount of downloads:1494
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LUO Ke,WU Shuanglong,REN Chao,LIU Yuan
Abstract: Aiming at the electromagnetic noise problem of the permanent magnet synchronous motor for electric vehicle,the causes of noise were analyzed from the perspective of current harmonic and electromagnetic force. It has shown that current harmonics control is an effective method for motor electromagnetic noise...
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Number of views:3197 Amount of downloads:1494
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MAO Shufan
Abstract: An automatic compensation method was presented based on adaptive capacitance regulationtechnology and the principle of controlling capacitor charging and discharging voltage. Based on the turn off ability of the self-turn off device,a switch circuit composed of two self-turning off devices connected in rev...
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Number of views:3238 Amount of downloads:1467
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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...
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Number of views:3168 Amount of downloads:1464
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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...
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Number of views:2411 Amount of downloads:1462
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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 ...
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Number of views:3571 Amount of downloads:1452
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ZHAO Chaokun,YAN Tao,ZHOU Jiachao,YUAN Zhanwei,MENG Pu
Abstract: The AMK servo control system is widely used in cigarette machine equipment like German Protos-M5 and local product ZJ116. But its failure parts repaired could not be guaranteed to operate safely and reliably. Ifthose parts are replaced frequently,the efficiency of the equipment will be seriously impact. To...
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Number of views:3296 Amount of downloads:1400