Inventor
TAKAKURA YUHACHI
JP12 patents
Patents
12 patentsUS6690137B2Feb 10, 2004
Sensorless control system for synchronous motor
HITACHI LTD74 citations98
US6628099B2Sep 30, 2003
Synchronous motor driving system and sensorless control method for a synchronous motor
HITACHI LTD45 citations96
US6198240B1Mar 6, 2001
Motor controller
HITACHI LTD67 citations96
US6650081B2Nov 18, 2003
Synchronous motor driving system
HITACHI LTD20 citations92
US6642681B2Nov 4, 2003
Starting control method of and control apparatus for synchronous motor, and air conditioner, refrigerator, washing machine and vacuum cleaner each provided with the control apparatus
HITACHI LTD51 citations92
US6626002B1Sep 30, 2003
Controller for PWM/PAM motor, air conditioner, and method of motor control
HITACHI LTD33 citations92
US6603280B2Aug 5, 2003
Motor controller
HITACHI LTD29 citations92
US6479956B1Nov 12, 2002
Brushless motor control device and equipment using the control device
HITACHI LTD50 citations92
US6075328AJun 13, 2000
PWM/PAM control mode switching type motor control apparatus, and motor drive and air-conditioner using the same
HITACHI LTD50 citations92
US5351182ASep 27, 1994
Level shift circuit and inverter apparatus using the same
HITACHI LTD26 citations92
US5929591AJul 27, 1999
Air conditioner
HITACHI LTD26 citations89
US6657412B2Dec 2, 2003
Pulse width modulation method, pulse width modulator and power converter
HITACHI LTD11 citations74