Inventor
ENDO TSUNEHIRO
JP49 patents
⚠️ This page may combine multiple inventors who share the name “ENDO TSUNEHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
40 patentsUS6690137B2Feb 10, 2004
Sensorless control system for synchronous motor
HITACHI LTD74 citations98
US5243732ASep 14, 1993
Vacuum cleaner with fuzzy logic control
HITACHI LTD142 citations97
US6628099B2Sep 30, 2003
Synchronous motor driving system and sensorless control method for a synchronous motor
HITACHI LTD45 citations96
US6531843B2Mar 11, 2003
Driving system of AC motor
HITACHI LTD55 citations96
US6111333AAug 29, 2000
Magnetic bearing, rotating machine mounting the same, and method for driving rotating machine
HITACHI LTD88 citations96
US5475293ADec 12, 1995
Method for measuring characteristic constants of alternating current motor and controller thereof based on said method
HITACHI LTD60 citations96
US4880474ANov 14, 1989
Method and apparatus for operating vacuum cleaner
HITACHI LTD125 citations96
US5940272AAug 17, 1999
Electric apparatus having heat radiating fin
HITACHI LTD59 citations95
US5574352ANov 12, 1996
Frequency control method for inverter and apparatus therefor
HITACHI LTD23 citations93
US5359278AOct 25, 1994
Zero current switching circuit and converting apparatus using the same
HITACHI LTD41 citations93
US4977508ADec 11, 1990
Internal combustion engine equipped with a torque controller
HITACHI LTD52 citations93
US7839113B2Nov 23, 2010
Apparatus and method for driving synchronous motor
HITACHI LTD19 citations92
US7619385B2Nov 17, 2009
Motor controller, washing machine, air conditioner and electric oil pump
HITACHI LTD30 citations92
US6657413B2Dec 2, 2003
Driving equipment for synchronous motors
HITACHI LTD21 citations92
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
US6639377B2Oct 28, 2003
Driving device for synchronous motor
HITACHI LTD51 citations92
US6570358B2May 27, 2003
Control apparatus for alternating-current motor
HITACHI LTD34 citations92
US5949663ASep 7, 1999
Inverter apparatus capable of readily modification of the specification and performance thereof
HITACHI LTD31 citations92
US5351182ASep 27, 1994
Level shift circuit and inverter apparatus using the same
HITACHI LTD26 citations92
US5294872AMar 15, 1994
Method and apparatus for operating vacuum cleaner
HITACHI LTD25 citations92
US5166585ANov 24, 1992
Motor control apparatus for an electric vacuum cleaner
HITACHI LTD28 citations92
US4992715AFeb 12, 1991
Torque control apparatus for rotating motor machine
HITACHI LTD50 citations92
US4983895AJan 8, 1991
Method and apparatus for operating vacuum cleaner
HITACHI LTD25 citations92
US7342378B2Mar 11, 2008
System and method for driving synchronous motor
HITACHI LTD21 citations90
US4736143AApr 5, 1988
Torque control apparatus for rotary machine
HITACHI LTD41 citations90
US6058036AMay 2, 2000
Inverter apparatus having operation specifications determined by type of I/O block which is connected to basic control unit
HITACHI LTD27 citations89
US7521887B2Apr 21, 2009
Vector controller for a permanent magnet synchronous motor, inverter module, and permanent magnet synchronous motor constant display system
HITACHI LTD12 citations84
US7332882B2Feb 19, 2008
Motor drive device that combined charge controller
HITACHI LTD14 citations84
US8035330B2Oct 11, 2011
Apparatus and method for driving synchronous motor
HITACHI LTD8 citations83
US4340931AJul 20, 1982
Power supply system
HITACHI LTD25 citations76
US7388341B2Jun 17, 2008
Control system for permanent magnet synchronous motor and module
HITACHI LTD8 citations74
US5075607ADec 24, 1991
Method and apparatus for operating vacuum cleaner
HITACHI LTD10 citations73
US7148651B2Dec 12, 2006
Apparatus and method for controlling AC motor and module therefor
HITACHI LTD8 citations72
US5300872AApr 5, 1994
Method and apparatus for control of inverter
HITACHI LTD11 citations72
US5050057ASep 17, 1991
Power source apparatus
HITACHI LTD19 citations72
US7821223B2Oct 26, 2010
Vector controller for a permanent magnet motor and inverter module
HITACHI LTD2 citations63
US7528568B2May 5, 2009
Vector controller for permanent magnet synchronous motor
HITACHI LTD6 citations63
US7443120B2Oct 28, 2008
Field weakening vector controller for permanent magnet synchronous motor and control module
HITACHI LTD5 citations63
US7199547B2Apr 3, 2007
Apparatus, method or system for controlling mobile body
HITACHI LTD6 citations61
HITACHI IND EQUIPMENT SYS
4 patentsUS7276876B2Oct 2, 2007
Synchronous motor driving apparatus
HITACHI IND EQUIPMENT SYS12 citations83
US7030589B2Apr 18, 2006
Driving systems of AC motor
HITACHI IND EQUIPMENT SYS11 citations83
US6954050B2Oct 11, 2005
Control method and control device of permanent-magnet type synchronous motor
HITACHI IND EQUIPMENT SYS14 citations83
US7602138B2Oct 13, 2009
Driving apparatus and driving system for electric motor
HITACHI IND EQUIPMENT SYS4 citations62