P

Inventor

YAMAI HIROYUKI

JP12 patents
⚠️ This page may combine multiple inventors who share the name “YAMAI HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DAIKIN IND LTD

4 patents
US7633249B2Dec 15, 2009

Polyphase current supplying circuit and driving apparatus

DAIKIN IND LTD23 citations92
US7053569B2May 30, 2006

Inverter control method and its device

DAIKIN IND LTD42 citations86
US4989128AJan 29, 1991

Pulse width modulation control unit of inverter

DAIKIN IND LTD12 citations68
US7804271B2Sep 28, 2010

Multiphase current supplying circuit, driving apparatus, compressor and air conditioner

DAIKIN IND LTD2 citations62

(unassigned)

2 patents
US6208109B1Mar 27, 2001

Synchronous motor driving method, compressor driving method, device for the methods, and brushless DC motor driving device

77 citations92
US5804939ASep 8, 1998

Brushless D.C. motor driving and controlling method and apparatus therefor and electrical equipment

58 citations92

YAMAI HIROYUKI

2 patents
US8947838B2Feb 3, 2015

Overcurrent fault detection device for electrical drive control system

YAMAI HIROYUKI44 citations91
US8395874B2Mar 12, 2013

Multiphase current supplying circuit, driving apparatus, compressor, and air conditioner

YAMAI HIROYUKI20 citations82

DAIKEN IND LTD

1 patent
US5739650AApr 14, 1998

Motor system capable of obtaining high efficiency and method for controlling a motor

DAIKEN IND LTD100 citations95

MYOEN KOHEI

1 patent
US8513953B2Aug 20, 2013

Power supply device and method for making decision as to contactor weld of power supply device

MYOEN KOHEI24 citations88

MAEDA KEN

1 patent
US9246408B2Jan 26, 2016

Power conversion apparatus

MAEDA KEN5 citations67

HITACHI AUTOMOTIVE SYSTEMS LTD

1 patent
US11798749B2Oct 24, 2023

Power converter including filter circuit device to improve a noise suppression function

HITACHI AUTOMOTIVE SYSTEMS LTD0 citations51