双Buck逆变器的迭代学习控制方法

Iterative Learning Control Method for Dual Buck Inverter

双Buck全桥逆变器由于无桥臂直通、直流电压利用率高、效率高等优点而被广泛应用。本文基于双Buck全桥逆变器针对直流电源波动、死区效应、稳态时线性和非线性负载电流扰动引起周期性扰动问题,提出一种电压外环迭代学习控制、电流内环无差拍控制的双环控制策略。仿真结果表明,采用该控制策略可使双Buck全桥逆变器具有较好的带载能力及精确的跟踪性能。

The dual Buck full-bridge inverter is widely used because the advantages of that it is no bridge through, the DC voltage utilization is high, high efficiency and so on.This paper, which is based on the dual Buck full-bridge inverter for periodic perturbation problemscause by DC power fluctuations, dead-time effect, steady-state linear and nonlinear load current disturbance, a double loop control strategy of voltage outer loop iterative learning control and current inner loop Dead-Beat control is proposed. The simulation results show that the control strategy can make the dual Buck fullbridgeinverter have better load capacity and accurate tracking performance.