Patent ID: 7928600
Filing Date: 2011-04-19
Classification: G01R,H02M

Abstract:
1. A power source device comprising: a DC voltage power source means constituted by connecting in series plural DC voltage sources, a current amplifying means of a multi level inverter using DC voltage of the DC voltage power source means as a power source, at the output of the current amplifying means a load is connected, and a current control means that controls the current amplifying means so that a current flowing through the load assumes a current command value, wherein the DC voltage power source means comprises an AC-DC converting and stepping up means that converts a commercial AC power source voltage to a DC voltage and steps up the converted DC voltage, a DC-AC converting means that converts the DC voltage stepped up by the previous means to plural AC voltages and plural insulating transformers which step up the plural AC voltages converted by the converting means while insulating each other, and is constituted by connecting in series plural DC voltage sources that are obtained by converting the output voltages of the transformers to DC.