Based on the action mechanism of DC-link capacitors applied in electric vehicles (EVs), temperature characteristic of DC-link capacitors is analyzed. In a wide range of temperatures, a performance test is made for two kinds of commonly used DC-link capacitors, electrolytic capacitor and film capacitor. Then a comparative analysis is conducted. According to the established AC circuit model and capacitor temperature rise limiting, the relationship between RMS ripple current and parameters of DC-link capacitors is analyzed. And the influence of temperature characteristic on system is then pointed out. Finally, some kinds of treatment measures are proposed and analyzed.
Research on temperature characteristic of DC-link capacitors applied in electric vehicles
2014-08-01
810845 byte
Conference paper
Electronic Resource
English
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