The invention relates to an electric vehicle IGBT power module overheating and power cycle control method, which comprises the following steps: step 1, analyzing thermal fault parameters of an electric vehicle IGBT power module, and controlling the amplitude of power loss and adjusting the internal temperature of the IGBT power module by adjusting two variables of switching frequency and output current so as to perform overheating control on the IGBT power module; and step 2, performing high-power circulation and low-power circulation control on the IGBT power module. According to the method, the excessive design of the system is avoided, and the maintenance cost and defect occurrence rate of the system are reduced, so that the reliability of the IGBT power module is improved.
本发明涉及一种电动汽车IGBT功率模块过热及功率循环控制方法,包括以下步骤:步骤1、分析电动汽车IGBT功率模块热故障参数,通过调节开关频率和输出电流两个变量,控制功率损耗的幅度,调节IGBT功率模块内部的温度,进而对IGBT功率模块进行过热控制;步骤2、对IGBT功率模块进行高功率循环和低功率循环控制。本发明避免了系统的过度设计,降低了系统维护成本和缺陷发生率,从而提高IGBT功率模块的可靠性。
Electric vehicle IGBT power module overheating and power cycle control method
一种电动汽车IGBT功率模块过热及功率循环控制方法
2021-10-29
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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