Inventor
ITO TOMOMICHI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “ITO TOMOMICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
15 patentsUS7402982B2Jul 22, 2008
Energy storage type feeder voltage compensation apparatus and method of controlling feeder voltage
HITACHI LTD50 citations96
US6490182B2Dec 3, 2002
Power conversion apparatus
HITACHI LTD23 citations92
US9641034B2May 2, 2017
Rotary machine and drive system therefor
HITACHI LTD7 citations79
US10193383B2Jan 29, 2019
Dual-shaft gas turbine power generation system, and control device and control method for gas turbine system
HITACHI LTD3 citations73
US6809561B2Oct 26, 2004
Semiconductor power converting apparatus
HITACHI LTD8 citations73
US6703874B2Mar 9, 2004
Gate driver for MOS control semiconductor devices
HITACHI LTD8 citations73
US10202906B2Feb 12, 2019
Two-shaft gas turbine
HITACHI LTD6 citations72
US7643317B2Jan 5, 2010
Power converting device and method for controlling the same
HITACHI LTD7 citations71
US7667436B2Feb 23, 2010
Energy storage type feeder voltage compensation apparatus and method of controlling feeder voltage
HITACHI LTD2 citations62
US6727516B2Apr 27, 2004
Semiconductor power conversion apparatus
HITACHI LTD3 citations62
US6717177B2Apr 6, 2004
Semiconductor power conversion apparatus
HITACHI LTD0 citations52
US9219426B2Dec 22, 2015
Switching element, power converter, direct current transmission system, current control device, method of controlling power converter, and method of controlling current in voltage source converter
HITACHI LTD0 citations50
US10756571B2Aug 25, 2020
System and method for stabilizing power system
HITACHI LTD0 citations42
US9680368B2Jun 13, 2017
Power converter installed between an electric power system and an energy storage device
HITACHI LTD0 citations41
US9484793B2Nov 1, 2016
Electrical rotating machine system or wind turbine system
HITACHI LTD0 citations40