IGBT junction temperature estimation system and method based on temperature of emitter power terminal
A power terminal and emitter technology, which is applied in the field of IGBT junction temperature estimation system based on emitter power terminal temperature, can solve the problems of high requirements for measurement circuits and the influence of coupling factors
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[0038] In order to describe the present invention more specifically, the method will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0039] The present invention proposes a structure diagram of an IGBT junction temperature estimation system based on the temperature of the IGBT emitter power terminal. figure 1 shown. The system mainly includes a temperature measuring element, a temperature acquisition circuit, an IGBT gate driver and a main controller. in,
[0040] The temperature measuring element is used to measure the temperature on the IGBT power emitter terminal;
[0041] IGBT gate drive and protection circuit is used for drive control and protection of power device IGBT;
[0042] The temperature acquisition circuit is arranged on the IGBT gate driver, and is used to acquire the temperature signal on the IGBT power emitter terminal output by the temperature measuring element;
[0043] The main controller is used to s...
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