矩阵变换器输出电流比例谐振控制研究

摘要

与传统的PI控制相比,比例谐振控制无需进行繁琐的坐标变换,不存在受电路参数影响的前馈补偿和耦合项,能够实现对正弦指令信号无静差跟踪,广泛用于交-直-交变频器中.在分析了矩阵变换器输出电路数学模型的基础上,提出了基于比例谐振输出电流闭环控制策略.对比例谐振控制器各参数对输出电流控制性能进行了研究,并在此基础上对一具体工况的参数进行了设计.通过将比例谐振控制用于矩阵变换器输出电流闭环控制进行仿真研究与实验验证,仿真与实验结果证明了所提控制方法是正确可行的.%Compared to traditional PI control, proportional resonant control does not need complicated coordinate transformation, and there are no feed-forward compensation or coupling part effected by circuit parameters, which can achieve zero steady-static error to track sinusoidal referenced command and is widely used to AC-DC-AC converter.Based on analyzing the output circuit mathematical model of matrix converter, output current closed-loop control with proportional resonant is put forward.The output current control performance effected by proportional resonant control parameters is researched, and based on this proportional resonant parameters under a specific working condition are designed.Proportional resonant control applied to output current closed-loop control of matrix converter is emulated and experimented.Emulated results and experimental results both verify that the proposed method is right and feasible.