Patent ID: 9130489
Filing Date: 2015-09-08
Classification: B60L,H02P,Y02T

Abstract:
1. A vehicle capable of running by traction driving force using electric power from a power storage device, the vehicle comprising: a three-phase AC rotating electric machine for generating traction driving force, an inverter configured to convert DC power from the power storage device into AC power to drive the rotating electric machine, first and second capacitors connected in series between direct current side terminals of the inverter, a switching unit provided at a path electrically connecting the rotating electric machine and the inverter, and configured to connect coils of three phases in the rotating electric machine either to respective driving arms of three phases in the inverter, or to a connection node of the first and second capacitors, and a control device configured to control the switching unit, in an event of failure occurring in a driving arm of one phase among the driving arms of three phases during running of the vehicle, such that a coil in the rotating electric machine corresponding to the failure-occurring driving arm is connected to a side of the connection node, and then drive the rotating electric machine using the driving arms of the remaining two phases, the control device controlling the inverter such that, when an absolute value of voltage difference between voltage across the first capacitor and voltage across the second capacitor exceeds a predetermined threshold value, output power of the rotating electric machine is restricted, as compared to a case where the absolute value of the voltage difference is lower than the threshold value.