Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
REGENERATIVE RESISTOR PROTECTION DEVICE
Document Type and Number:
Japanese Patent JP2009136103
Kind Code:
A
Abstract:

To provide a regenerative resistor protection device that achieves cost reduction and miniaturization.

The regenerative resistor protection device includes: a semiconductor switching element 8 and a mechanical switching element 9 for controlling energization to a regenerative resistor 14; a voltage dividing circuit 10 consisting of resistors 11, 12 and connected in parallel to the semiconductor switching element 8 and the mechanical switching element 9; an abnormal signal output means 5 to output an abnormal signal when a voltage of a predetermined level is continuously output from the voltage dividing circuit 10 over a predetermined time; and a switching element control means 7 to output an off-signal to the mechanical switching element 9 based on the abnormal signal.


Inventors:
SATO MASAYOSHI
Application Number:
JP2007310016A
Publication Date:
June 18, 2009
Filing Date:
November 30, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ORIENTAL MOTOR CO LTD
International Classes:
H02M7/48
Domestic Patent References:
JPH099660A1997-01-10
JP2006262616A2006-09-28
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Masayuki Okamoto
Fukagawa Eri
Satoshi Morimoto



 
Previous Patent: MOTOR, AND REFRIGERANT COMPRESSOR WITH THE SAME

Next Patent: ELECTRIC POWER CONVERTER AND METHOD OF CONTROLLING THE SAME