Patent ID: 9203325
Filing Date: 2015-12-01
Classification: H02M

Abstract:
1. An electric power conversion device, comprising: a conversion circuit having plural pairs of bi-directionally switchable switching elements connected to respective phases, the conversion circuit being configured to convert an inputted alternating current electric power into an alternating current electric power; voltage detecting means for detecting input voltages to the conversion circuit; and control means for switching on and off the switching elements to control the conversion circuit, wherein the control means comprises: a switching time calculating section configured a control signal generating section configured to generate control signals to switch on and off the switching elements using the first switching time and the second switching time, wherein the control means turns off one of on state switching elements of either one of the upper arm circuit or the lower arm circuit and maintains the on state of the other of the on state switching elements of the other arm circuit, in a case where a state is transited from the first switching time to the second switching time.