Electrical machine drive system including an optical position tr

Details Electrical machine drive system including an optical position tr Electrical machine drive system including an optical position tr

Filed on

1997-03-11

Date issued

1998-10-13

Examiner

Stephan, Steven L.

Patent Class

Electrical generator or motor structure

SubClass

Dynamoelectric

SubSubClass

Rotary

Other Related Categories

318254, H02K 2906, H02K 2910

Type

Patent

Status

active

Patent number

058216480

Description

ABSTRACT:
An optical position transducer circuit for an electrical machine, for example a switched reluctance machine, comprises an optical transmitter, an optical sensor and an encoder disc in the path between the transmitter and the sensor. The disc is formed with apertures and light-blocking areas in between in accordance with a digital position code. The optical position transducer is energized by an enabling circuit. When the machine is not in use but in a standby mode, the enabling circuit is responsive to a signal from a controller to disable the transducer and to enable the transducer when an input demand signal is received from the controller. Selective enablement of the transducer considerably extends its lifetime and reduces current consumption in the standby mode.

REFERENCES:
patent: 3701043 (1972-10-01), Dukes
patent: 3819998 (1974-06-01), Yole
patent: 4011487 (1977-03-01), Loomis
patent: 4329069 (1982-05-01), Herscovici
patent: 4535405 (1985-08-01), Hill et al.
patent: 4698537 (1987-10-01), Byrne et al.
patent: 4698562 (1987-10-01), Gale et al.
patent: 4779031 (1988-10-01), Arends et al.
patent: 4855734 (1989-08-01), Elsdoerfer
patent: 5427193 (1995-06-01), Avakian
patent: 5491391 (1996-02-01), Bahr et al.
"The Characteristics, Design and Applications of Switched Reluctance Motors and Drives", by Stephenson and Blake, presented at the PCIM '93 Conference and Exhibition at Nurnberg, Germany, Jun. 21-24, 1993.

Affiliated with

Also associated with

Rating

Electrical machine drive system including an optical position tr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical machine drive system including an optical position tr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical machine drive system including an optical position tr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-315783