Patent ID: 7224079
Filing Date: 2007-05-29
Classification: H02J,H02P,Y02T

Abstract:
1. A driving/electric-power generating system for vehicle comprising: an electric rotating machine comprised of a rotor and a stator having a three-phase winding; and a three-phase inverter connected to the three-phase winding, wherein the three-phase winding is comprised of a first and second three-phase winding, the first and second three-phase windings are independent three-phase windings, wherein U-phase, V-phase and W-phase windings of the first three-phase winding are electrically displaced with respect to corresponding U-phase, V-phase and W-phase windings of the second three-phase winding, and wherein switching elements for respective phases in the three-phase inverter are connected in parallel by the number of windings in the first and second three-phase windings, each winding of the first and second three-phase windings is individually connected to each of the parallel switching elements by phase, wherein the switching elements of the inverter are divided into three groups corresponding to three phases, and the switching elements of each same group are driven with the same gate signal, and wherein an on-off timing of the three-phase inverter corresponding to the respective U-phase, V-phase and W-phase windings of the first and second three-phase windings is an intermediate timing between induced voltages of the respective U-phase, V-phase and W-phase windings.