CURRENT CONTROL DEVICE OF AN INVERTER CAPABLE OF PERFORMING INVERTER CURRENT CONTROL BY DETECTING A CURRENT FLOWING IN A SWITCHING ELEMENT AT THE MINIMUM LIMIT

摘要

PURPOSE: A current control device of an inverter is provided to direct detect a current of a switching element without a detection-only circuit by using a current detecting sensor.;CONSTITUTION: An inverter(100) converts an input DC voltage into a three phase AC current through plural switching elements. Current detection sensors(110a-110f) detects a phase current flowing in plural switching elements outputting the phase current having the polarity. A control unit(200) calculates the phase current having the opposite polarity by using the phase current detected through the current detection sensors. The control unit performs on-off control to the switching elements by referring to the phase current having the opposite polarity and the phase current detected through the current detection sensors.;COPYRIGHT KIPO 2013;[Reference numerals] (200) Control unit; (300) Motor; (400) Drive circuit; (600) Converter