Boots – shoes – and leggings
Patent
1996-04-16
1998-01-27
Trammell, James P.
Boots, shoes, and leggings
257712, 310 68C, 318472, 363141, 364524, 36455101, H01L 2334
Patent
active
057128022
ABSTRACT:
A method for providing thermal protection for forced air cooled power electronic semiconductors without direct measurement of semiconductor temperature, the semiconductors being mounted on a heat sink over which cooling air is blown includes the steps of computing the cooling air mass flow rate, creating an electronic model of the semiconductor/heat sink combination and estimating the semiconductor junction temperature from the mass flow rate and model. The cooling mass flow rate is determined by measuring the temperature of the cooling air prior to passage over the heat sink, measuring atmospheric pressure of the cooling air, determining the volumetric air flow rate of the cooling air and computing, from the cooling air temperature, pressure and volumetric flow rate, the cooling air mass flow rate. Power dissipation in the semiconductors is then computed and heat sink and semiconductor temperatures are estimated from power dissipation and cooling air mass flow rate. Semiconductor power dissipation is limited so as to restrict semiconductor temperature to a safe operating value.
REFERENCES:
patent: 4117527 (1978-09-01), Demarest et al.
patent: 5168439 (1992-12-01), Kumar et al.
patent: 5237338 (1993-08-01), Stephenson
patent: 5253613 (1993-10-01), Bailey et al.
patent: 5446362 (1995-08-01), Vanek et al.
patent: 5491610 (1996-02-01), Mok et al.
patent: 5497288 (1996-03-01), Otis et al.
patent: 5600575 (1997-02-01), Anticole
Kumar Ajith Kuttannair
Macchiaroli Peter Billey
Breedlove Jill M.
General Electric Company
Pipala Edward J.
Snyder Marvin
Trammell James P.
LandOfFree
Thermal protection of traction inverters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal protection of traction inverters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal protection of traction inverters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-347322