Chaos phenomenon in the DC-DC switching converters

摘要

DC-DC switching converter is an important part of power electronics, belonging to strong nonlinear time-varying systems. In the course of their traditional research, which rarely involves the study of nonlinear phenomena. However, During switching converter is working state, it can produce a transient pulse containing high frequency harmonics that can emit electromagnetic interference, electromagnetic interference can cause pollution to the network and direct impact to other electrical appliances to work by conduction, radiation, all these phenomena indicates that the existence of chaos. Because chaos is a state as a result of instability, the uncertainty will lead the operation of the system to phenomena like Random, which affect the control performance of converter, even lead to not working, the study of chaos in the switching converter and its control methods which have important guiding significance in the correct designing and debugging switching converter will help us to avoid or eliminate this phenomenon in the design, so that the converter works in a stable cycle.