Abstract
This paper considers an integrated onboard charger of electric vehicles (EVs) using three-phase nine windings interior permanent magnet machine (3P9W-IPMSM). The motor windings are utilized as input inductance filter during charging mode. No additional switches are required for charging and traction modes reconfiguration. The main ideas of using nine windings IPMSM are: the production of high-power charging at the battery side, and the elimination of torque production during charging. Also, the three-phase grid is easily connected to the IPMSM stator windings via machine's neutral points without switch. Inductance and torque characteristics are analyzed during charging for this 3P9W-IPMSM. To validate this theoretical analysis, a prototype 3P9W-IPMSM was built. Mathematical analysis, numerical simulations and experimental results are compared.
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