Patent ID: 8288980
Filing Date: 2012-10-16
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. An apparatus for driving a switching member of a power converter so as to generate, from a voltage of a power supply source, a variable output voltage of the power converter, the output voltage being applied to a rotary machine and generating torque in the rotary machine for rotating a rotor, the apparatus comprising: a waveform setter that sets a waveform of the output voltage of the power converter based on any one of: at least two of a request torque for the rotary machine, a rotational velocity of the rotor, a command voltage for controlling the torque in the rotary machine to the request torque, and the voltage of the power source; and a voltage utilization factor of the power converter; a phase setter that sets, based on any one of: a deviation between the generated torque and the request torque; and a deviation between a command current for the rotary machine defined by the request torque and an actual current flowing in the rotary machine, a phase of the output voltage of the power converter in the two-phase rotating coordinate system; and a drive signal determiner that determines, based on the waveform of the output voltage by the waveform setter and the phase set by the phase setter, a drive signal, and applies the drive signal to the switching member to thereby drive the switching member such that the generated torque is adjusted to the request torque.