CAJ | 학술논문

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.
위료조정전교식천련해진변환기적수출전압병소제기문파,문중채용무원성공제방법대기진행건모여공제.수선건립천련해진변환기적구랍-랍격랑일모형;연후이용"주입조니사득계통은정"적무원성공제사상화리아보낙부은정성이론래설계일개비선성적무원성공제기.방진화실험결과표명:재수궤수입우동、부재삼수변화적정황하,수출전압화전감전류향응곡선발생약변,수부재파동영향교대,단흔쾌회도원래적평형점;계통유은정적가조정적수출전압,구유교강적로봉성、쾌속성화근종성,차문파교소.
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 designed 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.