抑制四脚间接矩阵变换器共模电压的控制策略
Control Strategy of Four-leg Indirect Matrix Converter for Reducing Common-mode Voltage
李逸凡 1周建萍 1茅大钧 1孔凡森 1周安杰1
作者信息
- 1. 上海电力大学 自动化工程学院,上海 200090
- 折叠
摘要
为了抑制四脚间接矩阵变换器工作时产生的共模电压,提出一种新的调制型模型预测方法.采用调制型模型预测控制分别在整流级和逆变级寻找最优矢量组,将逆变级的零矢量分配到整流级,消除逆变级的零矢量,在不改变硬件电路的前提下,有效降低共模电压.重新规定各矢量的顺序,确保逆变级在整个周期内只有一个桥臂上的开关工作.仿真结果验证了该控制策略的可行性与有效性.
Abstract
To reduce the common-mode voltage of four-leg indirect matrix converter,a new modulated model predictive control method is proposed.Firstly,the modulated model predictive control is used to find the optimal vector group at the rectifier stage and the inverter stage,respectively.Secondly,the zero vector of the inverter stage is allocated to the rectifier stage to eliminate the zero vector of the inverter stage,and the common-mode voltage is effectively reduced without changing the hardware circuit.Then,the sequence of each vector is redefined to ensure that only one switch on the bridge arm works in the whole sampling period.Finally,the simulation results verify the feasibility and effectiveness of the control strategy.
关键词
四脚间接矩阵变换器/调制型模型预测控制/调制策略/共模电压/零矢量Key words
four-leg indirect matrix converter/modulated model predictive control/control strategy/common-mode voltage/zero vector引用本文复制引用
基金项目
国家自然科学基金(61275038)
上海市科技创新行动计划地方院校能力建设专项(19020500700)
出版年
2024
NETL
NSTL
万方数据