Inventor
OKAMATSU SHIGETOSHI
JP13 patents
Patents
13 patentsUS4335337AJun 15, 1982
Control system for electric motor vehicle
HITACHI LTD68 citations96
US4490666ADec 25, 1984
Control of induction motor using PWM inverter
HITACHI LTD34 citations92
US4825131AApr 25, 1989
Control system for induction motor driven electric car
HITACHI LTD41 citations90
US7869232B2Jan 11, 2011
Electric power converter suppressing output voltage variation due to input voltage fluctuation
HITACHI LTD7 citations84
US6611125B2Aug 26, 2003
Method for calculating inertia moment and driver for electric motor
HITACHI LTD14 citations84
US4327313AApr 27, 1982
Control apparatus for electric car
HITACHI LTD27 citations81
US4675799AJun 23, 1987
Control system for power converter
HITACHI LTD21 citations80
US4315203AFeb 9, 1982
Control system for induction motor-driven car
HITACHI LTD24 citations80
US4338558AJul 6, 1982
Induction motor control system and method
HITACHI LTD14 citations74
US4672525AJun 9, 1987
Guard system for inverter apparatus
HITACHI LTD11 citations73
US7906933B2Mar 15, 2011
Apparatus and method for driving an induction motor
HITACHI LTD5 citations60
US7710053B2May 4, 2010
Motor driving system and motor driving method
HITACHI LTD6 citations58
US6646896B2Nov 11, 2003
Controller of AC machine
HITACHI LTD0 citations48