US 12,143,043 B2
Inverter driving apparatus and method of controlling the same
Young Seul Lim, Seoul (KR); Myung Ho Kim, Incheon (KR); Sang Cheol Shin, Suwon-si (KR); and Kang Ho Jeong, Siheung-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Nov. 11, 2022, as Appl. No. 17/985,417.
Claims priority of application No. 10-2022-0074976 (KR), filed on Jun. 20, 2022.
Prior Publication US 2023/0412109 A1, Dec. 21, 2023
Int. Cl. H02P 27/08 (2006.01); H02P 23/00 (2016.01)
CPC H02P 27/085 (2013.01) [H02P 23/0027 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An inverter driving apparatus comprising:
an inverter including a plurality of legs corresponding to a plurality of phases respectively;
a gate driver outputting a pulse width modulation signal for switching a transistor provided in at least one leg of the plurality of legs;
a variable resistor circuit connected to a gate terminal of the transistor;
a switching speed control circuit determining a switching state of the transistor based on the pulse width modulation control signal, adjusting a resistance value of the variable resistor circuit according to a transistor temperature based on the determination result, and controlling a switching speed of the transistor; and
a gate-off resistor connected between an output end node of the gate driver outputting the pulse width modulation control signal and a gate node connected to a gate end of the transistor.