Overheating protection system of switching module

Details Overheating protection system of switching module Overheating protection system of switching module

1998-06-01

1999-08-10

Medley, Sally C.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

361 24, 361 25, H02H 504

Patent

active

059368209

ABSTRACT:
An overheating protection system for a switching module prevents thermal breakdown of switching devices for passing currents through a load, for example an electric motor, while making it possible for the switching module to provide as much required current to the load as possible. The system comprises a temperature detector for detecting the temperature of a switching module, a temperature estimator for calculating a temperature change rate of a switching device inside the switching module corresponding to a current passed through the load and calculating an estimated value of the internal temperature of the switching module on the basis of the calculated temperature change rate and the detected temperature and a current limiter for on the basis of the estimated value correcting a target current value of a current controller controlling a current passed by the switching device.

REFERENCES:
patent: 4924112 (1990-05-01), Anderson et al.
patent: 5268601 (1993-12-01), Cossins
patent: 5838578 (1998-11-01), Pippin

Affiliated with

Also associated with

Rating

Overheating protection system of switching module does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Overheating protection system of switching module, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Overheating protection system of switching module will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1126071