Control Apparatus and Electric Brake Apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20080054839A1
SERIAL NO

11835796

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In an apparatus using an inverter as a motor drive apparatus, continuous operation can be permitted during a motor open-phase without providing any additional switching element. Especially, in an electric brake apparatus, higher security can be assured. When a motor winding of one phase occurs an open-phase, currents are conducted to the remaining normal phases while taking the position of a rotor of motor into account to thereby generate torque of the motor. Since the motor torque can be generated continuously in the event of a phase malfunction, reliability of apparatus such as the electric brake apparatus can be improved.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI, LTD.TOKYO14088

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ajima, Toshiyuki Tokai, JP 28 271
Saito, Hiroyuki Hitachinaka, JP 349 3126
SASAKI, Masataka Hitachi, JP 25 221

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AISIN AW CO., LTD. (1)
* 5469032 Electric motor control with malfunction detection 30 1993
 
VALEO ELECTRICAL SYSTEMS, INC. (1)
* 2005/0093,499 Fault-handling system for electric power steering system 1 2003
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HAMILTON SUNDSTRAND CORPORATION (1)
9274149 Frequency phase detection three phase system 1 2012
 
INFINEON TECHNOLOGIES AUSTRIA AG (1)
9065275 Driving circuit for an electric motor 0 2013
 
HITACHI, LTD. (2)
* 8164297 Power converter and motor driving system 1 2009
* 2010/0231,150 POWER CONVERTER AND MOTOR DRIVING SYSTEM 3 2009
* Cited By Examiner