摘要
LLC谐振电路因具有高功率密度、高效率等优点成为研究的热点,由于其输出电压不是正弦交流电,研究焦点集中在直流电压输出的LLC谐振变换器。为了在正弦交流电源中利用LLC谐振电路的优点,本文介绍一种在LLC变换器基础上改进的直流-交流变换器。首先在Saber仿真基础上论证电路能实现正弦交流输出,然后对电路进行频域分析,并提出一种能实现软开关的参数设计方法,最后根据所述方法设计电路并仿真验证理论的正确性。
LLC resonant circuit has been widely studied because of high power density and high efficiency.The focus of the study was on the LLC resonant converter used in DC power because of the non-sinusoidal output voltage of the circuit.A DC-AC resonant converter was introduced for capitalizing the advantages of the LLC resonant circuit.At first a simulation based on saber was executed to verify the view that the output of the circuit is sinusoidal.Then the frequency domain analysis of the circuit was executed and a parameter design strategy was presented.At last,an AC power was designed and a simulation was executed to verify the analysis.
出处
《电测与仪表》
北大核心
2010年第7期56-59,64,共5页
Electrical Measurement & Instrumentation
