燃料电池轿车用DC／DC变换器的屏蔽设计

Screen Design of DC/DC Converter for Fuel Cell Electrical Vehicle

燃料电池的输出特性偏软,难以直接与汽车的电动机直接匹配,必须采用DC/DC变换器来改善其输出性能.新型的燃料电池电动轿车FCEv(Fuel Cell Electrical Vehicle)中的电磁环境十分复杂,产生电磁干扰的因素很多.本文分析了DC/DC变换器降压型主电路所处的电磁环境和电磁干扰因素,着重讨论了燃料电池电动轿车用DC/DC变换器的屏蔽设计和开孔技术.

It＇s difficult for fuel cell with weak output characteristic to match with motor driver, adopting DC/DC converter to improve its output characteristic is necessary. The converter is in complex electromagnetic environment and affected by many interference factors in the new type FCEV. In this paper, the electromagnetic environment and electromagnetic interference factors affecting DC/DC converter used for electric vehicle fuel cell in BUCK circuit were analyzed, And then discusses the screen technique and the method of opening the bore.