Foley & Lardner LLP
Power conversion device
An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value. A second switching time is calculated using a carrier and the first switching time. A control signal generating section generates control signals to switch on and off of the switching elements using the first switching time and second switching time. In a case where a state is transited from the first switching time to the second switching time, a controller turns off one of on a state switching elements of either one of an upper arm circuit or a lower arm circuit and maintains on state of the other of the on state switching elements of the other arm circuit.
NAGAOKA UNIVERSITY OF TECHNOLOGY NISSAN MOTOR CO., LTD.
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H02M H02M H02M
inventional inventional inventional
Junichi Kouji Yoshiya Masao Takamasa
Itoh Yamamoto Ohnuma Saito Nakamura