作　　者： ; ; ;

机构地区： 华南理工大学电子与信息学院

出　　处： 《华南理工大学学报（自然科学版）》 2009年第10期1-4,共4页

摘　　要： 为了调整全桥式串联谐振变换器的输出电压并消除其纹波,文中采用无源性控制方法对其进行建模与控制.首先建立串联谐振变换器的欧拉-拉格朗日模型;然后利用"注入阻尼使得系统稳定"的无源性控制思想和李亚普诺夫稳定性理论来设计一个非线性的无源性控制器.仿真和实验结果表明:在随机输入扰动、负载参数变化的情况下,输出电压和电感电流响应曲线发生跃变,受负载波动影响较大,但很快回到原来的平衡点;系统有稳定的可调整的输出电压,具有较强的鲁棒性、快速性和跟踪性,且纹波较小. In order to adjust the output voltage and eliminate the voltage ripple of the full-bridge series resonant converter, a passivity-based control method is employed to construct a new model of the converter and to control it. In the investigation, an Euler-Lagrange model of the converter is built, and a nonlinear passive controller is de- signed according to the concept that ＂damping injection makes the system stable＂ and Lyapunov stability theory. Simulated and experimental results show that, the response curves of both the output voltage and the inductance current jump with the random input disturbance and especially with the variable load parameter, then return to the equilibrium point; and that the controller is characterized by stable and adjustable output voltage, strong robustness, high speed, good tracking ability, and small voltage ripple.

关 键 词： 串联谐振 电压纹波 无源性控制 鲁棒性

领　　域： [电子电信]