Patent ID: 8154236
Filing Date: 2012-04-10
Classification: H02M,H02P

Abstract:
1. An electric power conversion circuit connected between a voltage battery and a multiphase electric rotary machine, comprising converter unit placed for each of phases other than a predetermined phase of the multiphase electric rotary machine, wherein the converter unit converts a voltage of the voltage battery to a predetermined voltage, and supplying the predetermined voltage to the corresponding phase of the multiphase electric rotary machine, wherein a voltage potential at one terminal in a pair of output terminals of the converter unit is fixed to a voltage potential at one of a pair of electrodes of the voltage battery, and the converter unit adjusts a voltage potential at the other terminal of the converter unit within a range which is greater than a voltage between the pair of the electrodes of the voltage battery in a boundary of a voltage potential at one electrode of the voltage battery, and the predetermined phase of the multiphase electric rotary machine is connected to a node which has the voltage potential of the other electrode of the voltage battery.