摘要
本文对开开功率变换器中的混沌现象进行了探讨，并在电路实验和计算机模拟两个方面证明开关功率变换器不仅在ＰＷＭ闭环控制下会出现混沌现象，而且在开环工作情况下，由于功率晶体管极间电容的非线性等因素的影响，功率变换器也可能出现混沌．
The chaos in power converters is studied in this paper.The results of circuit experiment and the simulation show that the Chaotic phenomena occur out only in a PWM contolled switched mode power converter,but in an open-loop swithed mode power converter as well as the nonlinear effect of the power transistor direct poles capacitance.
