MOTOR CONTROLLER OF AIR CONDITIONER

摘要

A motor controller of an air-conditioner is provided to reduce the manufacturing cost by making the cycle of an interrupt signal correspond to a control cycle so as to reduce the number of timers. A motor controller(600) of an air-conditioner includes a converter(610), an inverter(620) and a microcomputer(630). The converter converts AC power into DC power. The inverter includes a plurality of converter switching elements, converts the DC power into predetermined AC power according to a switching operation and drives a three-phase electric motor. The microcomputer controls the converter and the inverter, outputs an inverter switching control signal to the inverter and makes the control cycle of the inverter correspond to the cycle of an inverter interrupt signal for outputting the inverter switching control signal.