Inventor
SUGAWARA NAOSHI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “SUGAWARA NAOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
6 patentsUS7888894B2Feb 15, 2011
Electric motor control system, series hybrid vehicle, electric motor control apparatus, and electric motor control method
HITACHI LTD55 citations95
US6567282B1May 20, 2003
Apparatus and method of sensorless control for synchronous generator
HITACHI LTD26 citations92
US7583036B2Sep 1, 2009
Electrically driven vehicle
HITACHI LTD14 citations84
US7315144B2Jan 1, 2008
AC drive apparatus, vehicle control apparatus, and power conversion method and vehicle control method
HITACHI LTD9 citations83
US7841434B2Nov 30, 2010
Electric drive system for vehicle, electric control system for vehicle, electric drive method for vehicle
HITACHI LTD11 citations81
US6720753B2Apr 13, 2004
Power generation system using synchronous generator
HITACHI LTD12 citations73