Název:	Least squares method for indentification of IGBT thermal impedance networks using direct temperature measurements
Autoři:	Njawah Achiri, Humphrey Mokom Šmídl, Václav Peroutka, Zdeněk Streit, Luboš
Citace zdrojového dokumentu:	NJAWAH ACHIRI, H. M., ŠMÍDL, V., PEROUTKA, Z., STREIT, L. Least squares method for indentification of IGBT thermal impedance networks using direct temperature measurements. Energies, 2020, roč. 13, č. 14, s. 1-13. ISSN 1996-1073.
Datum vydání:	2020
Nakladatel:	MDPI
Typ dokumentu:	článek article
URI:	2-s2.0-85089853175 http://hdl.handle.net/11025/42486
ISSN:	1996-1073
Klíčová slova v dalším jazyce:	thermal impedance;junction temperature;foster network;Cauer network;least squares
Abstrakt v dalším jazyce:	State-of-the-art methods for determining thermal impedance networks for IGBT (Insulated Gate Bipolar Transistor) modules usually involves the establishment of the relationship between the measured transistor or diode voltage and temperature under homogenous temperature distribution across the IGBT module. The junction temperature is recomputed from the established voltage–temperature relationship and used in determining the thermal impedance network. This method requires accurate measurement of voltage drop across the transistors and diodes under specific designed heating and cooling profiles. Validation of the junction temperature is usually done using infrared camera or sensors placed close to the transistors or diodes (in some cases and open IGBT module) so that the measured temperature is as close to the junction as possible. In this paper, we propose an alternative method for determining the IGBT thermal impedance network using the principles of least squares. This method uses measured temperatures for defined heating and cooling cycles under di erent cooling conditions to determine the thermal impedance network. The results from the proposed method are compared with those obtained using state-of-the-art methods.
Práva:	© MDPI
Vyskytuje se v kolekcích:	Články / Articles (KEV) Články / Articles (RICE) OBD

Všechny záznamy v DSpace jsou chráněny autorskými právy, všechna práva vyhrazena.