Patent ID: 7049778
Filing Date: 2006-05-23
Classification: H02M,H02P

Abstract:
1. An inverter control apparatus comprising: an inverter circuit in which series connections of a pair of switching elements are connected in parallel, the series connections being disposed correspondingly with respective phases of a multiphase alternating current motor, and phase voltages for driving the motor are taken out from junctions of the switching elements in the series connections, respectively; a current detection means, disposed in series with the inverter circuit, for detecting a motor current flowing through the motor; and a control section which outputs PWM signals based on command values for the phases to control ON/OFF operations of the switching elements of the inverter circuit, wherein the control section comprises: the signal production means produces interrupt signals for the control method respectively at timings when the PWM signals cause ON/OFF states of the switching elements to be switched over, and the control means controls the A/D converter to start A/D conversion, based on the interrupt signals.