Patent ID: 9160249
Filing Date: 2015-10-13
Classification: H02M

Abstract:
1. A power conversion apparatus comprising: an AC/DC converter which converts an AC voltage to a DC voltage; a smoothing capacitor connected to the DC side of the AC/DC converter; a DC/DC converter, comprising a semiconductor switch, which performs DC/DC conversion for DC power of the smoothing capacitor and outputs the resultant power to a load; and a controller which controls the AC/DC converter such that a power factor of AC is controlled and the DC voltage of the AC/DC converter follows a DC voltage target value, and which controls the DC/DC converter by controlling a duty ratio of the semiconductor switch such that a DC input/output between the DC/DC converter and the load follows an instruction value, wherein the controller adjusts the DC voltage target value of the AC/DC converter such that the duty ratio of the semiconductor switch of the DC/DC converter approaches a set value.