ELECTRIC CURRENT DETECTION DEVICE AND MOTOR CONTROL DEVICE

摘要

An electric current detection device for reducing the detection error included in a detected electric current in order to detect the output electric current of a PWM inverter, the device characterized in comprising electric current detection means (111, 112) for detecting the electric current at a plurality of specific timings in a fixed interval set in advance, and adding means (113u, 113w) for adding the electric current detection value of each of the plurality of specific timings in a fixed interval; and in that the electric current detection means detects the electric current at least once each for the rising side and the falling side of a triangular PWM carrier wave as the plurality of specific timings in a fixed interval.