US 11,984,821 B2
Inverter control device
Toshiyuki Ajima, Tokyo (JP); Takafumi Hara, Tokyo (JP); Akihiro Ashida, Hitachinaka (JP); and Hirokazu Matsui, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/761,444
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Jul. 31, 2020, PCT No. PCT/JP2020/029396
§ 371(c)(1), (2) Date Mar. 17, 2022,
PCT Pub. No. WO2021/053974, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 2019-172010 (JP), filed on Sep. 20, 2019.
Prior Publication US 2022/0247328 A1, Aug. 4, 2022
Int. Cl. H02M 7/53 (2006.01); B60L 15/08 (2006.01); H02M 1/12 (2006.01); H02M 7/5395 (2006.01); H02P 27/08 (2006.01); H02P 29/40 (2016.01)
CPC H02M 7/5395 (2013.01) [B60L 15/08 (2013.01); H02M 1/12 (2013.01); H02P 27/08 (2013.01); H02P 29/40 (2016.02); B60L 2210/40 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An inverter control device, comprising:
a pulse generation unit configured to generate a pulse width modulation (PWM) pulse for controlling an inverter by using a modulation factor based on a voltage command and a pulse period of a predetermined frequency; and
a pulse shift unit configured to correct a phase of the PWM pulse such that the PWM pulse is output at a phase corresponding to a harmonic of a predetermined order of a modulation wave in a near-zero-cross region including a zero-cross point where the modulation wave based on the voltage command changes across 0.