Patent ID: 8410740
Filing Date: 2013-04-02
Classification: B62D,H02P

Abstract:
1. An electric power conversion apparatus for converting electric power of a power source supplied to a motor having a winding set, which is formed of coils corresponding to a plurality of phases, the electric power conversion apparatus comprising: an inverter part having a plurality of switching element pairs corresponding to the plurality of phases of the winding set, each of the switching element pairs being formed of a high-potential side switching element provided at a high-potential side of the power source and a low-potential side switching element provided at a low-potential side of the power source; resistors provided between the coils of the winding set and the high-potential side of the power source; a neutral point detection part for detecting a neutral point voltage of the winding set; and an abnormality detection part for detecting abnormality based on the neutral point voltage detected by the neutral point detection part wherein the resistors have different resistances among the plurality of phases of the winding set.