Patent ID: 8810176
Filing Date: 2014-08-19
Classification: H02M,H02P

Abstract:
1. A converter control device for a vehicle having a converter, which includes a resonance circuit formed of a capacitor and a coil and generates a drive voltage for driving a motor by converting a DC voltage supplied from a DC power source into a DC drive voltage at a conversion ratio determined based on an input control signal, the converter control device comprising: a basic command value calculation section which, to equalize the drive voltage generated by the converter with a predetermined target voltage, calculates a basic command value based on the target voltage; a variation state detection section which detects a state of variation of the drive voltage outputted from the converter; a correction value calculation section which calculates, based on the variation state of the drive voltage, a correction value for correcting the basic command value to suppress the variation of the drive voltage; and a control signal generation section which calculates a control command value by correcting, using the correction value, the basic command value, generates the control signal according to the control command value and outputs the control signal to the converter; wherein: the variation state detection section detects the variation state by calculating a variation rate of the drive voltage outputted from the converter at each predetermined detection timing; and the correction value calculation section calculates, based on the variation rate, the correction value that reduces an absolute value of the variation rate; the variation state detection section includes