利用基波分量近似法的LLC串联谐振电路建模  

Modeling of LLC series resonant circuit usingfundamental component approximation

作　　者：王凡 WANG Fan(Training Technology and Equipment Management Center,Shijiazhuang College of Applied Technology,Shijiazhuang,Hebei 050800,China)

机构地区：[1]石家庄职业技术学院实训技术与装备管理中心,河北石家庄050800

出　　处：《石家庄职业技术学院学报》2023年第6期15-22,共8页Journal of Shijiazhuang College of Applied Technology

基　　金：石家庄职业技术学院院级课题(22YQ1005)。

摘　　要：利用基波分量近似法建立全桥LLC串联谐振直流直流变换器的数学模型,通过对电路基波分量进行傅里叶展开,将LLC串联谐振电路的非线性模型转变为线性等效数学模型,给出了详细的推导过程,分析了全桥LLC串联谐振变换器的直流电压增益特性,并确定了变换器的工作区域.By employing fundamental component approximation,a mathematical model for a fullbridge LLC series resonant DC-DC converter is established.Through Fourier expansion of fundamental components of the circuit,the nonlinear model of LLC series resonant circuit is transformed into a linear equivalent mathematical model.A detailed derivation process is provided and direct voltage gain characteristics of full-bridge LLC series resonant converter are analyzed.Additionally,the operational region of the converter is determined.

关 键 词：基波分量近似法 LLC串联 谐振变换 电路 

分 类 号：TN86[电子电信—信息与通信工程]