一种新型T型逆变器模型预测功率控制  

Model Predictive Power Control for a Single-phase T-type Inverter

作　　者：刘毓鑫 谢运祥[1] 张峰[1] 胡嘉威 LIU Yu-xin;XIE Yun-xiang;ZHANG Feng;HU Jia-wei(South China University of Technology Guangzhou 510640,China)

机构地区：[1]华南理工大学,广东广州510640

出　　处：《电力电子技术》2020年第10期83-86,共4页Power Electronics

基　　金：国家自然科学基金(51577074)。

摘　　要：传统的模型预测功率控制(MPPC)具有良好的动静态性能,但开关频率不固定,控制器周期计算量大,且对系统参数的准确性敏感。因此针对单相T型逆变器提出一种基于最优开关序列(OSS)的固定开关频率MPPC方法。该方法通过构造虚拟正交分量实现功率预测;通过对两个价值函数分别进行求解得到最优控制向量及作用时间,减小运算复杂度;通过特定开关序列输出对称且频率固定的脉宽调制(PWM)控制信号;通过参数估计准确消除模型参数误差。仿真和实验验证了所提控制策略的有效性。Traditional model predictive power control(MPPC)has outstanding dynamic and static performance.However,this kind of control method suffers from variable switching frequency and heavy computational burden and is sensitive to parameter deviation.Thus,based on optimal switching sequences,an optimal switching sequence MPPC is presented for a single-phase T-type inverter with fixed switching frequency.The method realizes power prediction by constructing virtual orthogonal components.The optimal control vector and the action time are obtained by solving the two value functions respectively to reduce the operation complexity.Output symmetrical pulse width modulation(PWM)control signal with fixed frequency through specific switching sequence.The model parameter error is eliminated accurately by parameter estimation.Simulation and experimental verify the effectiveness of the proposed control method.

关 键 词：逆变器 模型预测功率控制 参数误差 

分 类 号：TM464[电气工程—电器]