全桥高频链逆变电源的混合控制策略研究

全桥高频链逆变电源的混合控制策略研究

摘 要：对于全桥高频链逆变器的控制，本文提出一种混合式正弦脉冲脉位调制控制策略，高频变压器传递SPWM 波，根据对输出电压与电流进行过零比较与逻辑组合，得到周波变换器高频和低频混合驱动脉冲。介绍了全桥高频链逆 变器的工作原理，并应用MATLAB 仿真软件对电路进行控制算法的仿真，仿真结果验证了所提控制方案的可行性与正确性。
Abstract: A novel control strategy called hybrid sinusoidal pulse width phase modulation is proposed in this paper according to the control of full bridge high-frequency link inverter. SPWM wave is transmitted by the high-frequency transformer while the driving logic of the cycloconverter switches is determined by the zero comparison and logical combination of the output voltage and output current. So the driving signals of the cycloconverter switches are combined with low frequency pluses and high frequency ones. The operation principle of the full bridge high-frequency link inverter is analyzed and it is verified by the simulation results. The results prove that hybrid control strategy is correct.
关键词：全桥高频链逆变器；正弦脉冲脉位控制；仿真