Title: Verification of the current load capacity of the MOSFET transistor for low-voltage application using temperature estimation
Authors: Štěpánek, Jan
Bednář, Bedřich
Drábek, Pavel
Citation: ŠTĚPÁNEK, J., BEDNÁŘ, B., DRÁBEK, P. Verification of the current load capacity of the MOSFET transistor for low-voltage application using temperature estimation. In: Proceedings of the IEEE International Symposium on Industrial Electronics (ISIE 2019). Piscataway: IEEE, 2019. s. 1014-1019. ISBN 978-1-72813-666-0 , ISSN 2163-5137.
Issue Date: 2019
Publisher: IEEE
Document type: konferenční příspěvek
URI: 2-s2.0-85070618518
ISBN: 978-1-72813-666-0
ISSN: 2163-5137
Keywords in different language: MOSFET transistor;power electronic converter;thermal analysis;PN junction
Abstract in different language: This paper deals with the verification of the maximum current rating of MOSFET transistors in a discrete package TO-247AC. The main motivation for this analysis was the redesign of AC power drive chain for electric go kart with three phase power converter of the output nominal power 10kW, a supply voltage 48V and minimal switching frequency 50kHz. The inverter must be able to operate with short-term current overload up to 450A. A parallel combination of three power transistors is used to design the basic power switch. The HEXFET Power MOSFET transistor (IRFP4468PdF in a discrete case TO-247AC) was chosen as a basic structural element. We used DC analysis to verify the proper ies and imits of the discrete case TO-247AC. The maximum rated current through the MOSFET transistor was determined with respect to the maximum chip temperature and enclosure limitation. In order to accurately verify the measuring results f transistor temperature, a thermo-camera was used (the color is used to define the emissivity of measured object with reference ε = 0,9). Temperature was also measured by a thermometer PT100 sensor and estimated from the forward voltage on freewheeling diode.
Rights: Plný text je přístupný v rámci univerzity přihlášeným uživatelům.
Appears in Collections:Konferenční příspěvky / Conference papers (KEV)
Konferenční příspěvky / Conference papers (RICE)

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