首页|High Power Density EV Integrated Fast Battery Chargers Based on the General Torque Cancelation Law for Three-phase Motors
High Power Density EV Integrated Fast Battery Chargers Based on the General Torque Cancelation Law for Three-phase Motors
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国家科技期刊平台
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Integrated battery chargers are highly effective for saving costs and improving the power density of on-board chargers in electric vehicles(EVs).However,achieving torque elimination of the commonly used three-phase(3p)motors during the fast-charging process is challenging.In this paper,the general torque cancelation law applied in 3p permanent magnet syn-chronous motors(PMSMs)and induction motors(IMs)is derived to design high power density integrated fast battery chargers.Two novel integrated systems with fast-charging and vehicle-to-grid(V2G)capabilities are proposed based on this law.The main advantages of the proposed systems are:(1)Two filter inductors are constituted by the stator windings while charging,and only one external inductor and several contactors are supplemented to the motor-drive circuit.Therefore,the proposed integrated systems possess high power density;(2)The 3p open-winding(OW)motor is employed,with no need to modify the propulsion system or redesign the interior structure of the motor;(3)Employing an individual controller for each phase of the inner current loop control,the proposed systems realize unity power factors and low current harmonics in the fast-charging and V2G mode.Simulation and experimental results verify the feasibility of the proposed topologies and control strategies.
Electric vehicles(EVs)fast chargingintegrated battery charger3p PMSM/IMtorque cancelation
Yanxiong Lei、Guiping Du、Tuhuan Li、Wenjie Ma、Xueyi Wang
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School of Electric Power,South China University of Technology,Guangzhou 510641,China
Guangdong Provincial Natural Science Research Team Project
国家科技期刊平台
NSTL
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