A method for estimating a junction temperature of a power transistor used in an inverter, comprising measuring a temperature-dependent characteristic of a power semiconductor comprising the power transistor used in a power semiconductor module adapted for use in the inverter, and estimating the junction temperature of the power semiconductor using the mathematical relationship between junction temperature and the temperature-dependent characteristic of the power semiconductor. Measurement of the temperature-dependent characteristic and estimation of the junction temperature therefrom is free from using a discrete sensing element.
一种用于估计逆变器中使用的功率晶体管的结温度的方法,所述方法包括:测量功率半导体的温度相关特性,所述功率半导体包括所述功率晶体管,所述功率晶体管被用在适配成在所述逆变器中使用的功率半导体模块中;以及使用结温度和所述功率半导体的温度相关特性之间的数学关系来估计所述功率半导体的结温度。温度相关特性的测量和由此产生的结温度的估计免于使用分立感测元件。
SENSING JUNCTION TEMPERATURE OF POWER TRANSISTORS
感测功率晶体管的结温度
2022-01-21
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01K MEASURING TEMPERATURE , Messen der Temperatur / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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