18832548. POWER CONVERSION DEVICE (Mitsubishi Electric Corporation)
POWER CONVERSION DEVICE
Organization Name
Mitsubishi Electric Corporation
Inventor(s)
POWER CONVERSION DEVICE
This abstract first appeared for US patent application 18832548 titled 'POWER CONVERSION DEVICE
Original Abstract Submitted
A power conversion device includes a DC/DC converter which transforms DC voltage inputted from a first DC circuit, in accordance with a voltage command, and outputs resultant voltage to a second DC circuit; and a controlling circuitry which controls switching of semiconductor switching elements through comparison between a carrier wave and a modulation wave as the voltage command. The controlling circuitry adjusts, in accordance with the modulation wave value, a first period for increasing the modulation wave value so that the modulation wave exceeds the carrier wave, so as to ensure both of a first cycle T1 in which the semiconductor switching elements do not perform switching over one cycle of the carrier wave and a second cycle T2 in which the semiconductor switching elements perform switching at any timing in one cycle of the carrier wave.