快速矢量选择的三矢量PWM整流器模型预测低频控制
摘要：传统有限矢量集的模型预测控制(finite control set model predictive control，FCS-MPC)存在计算量大、开关频率不固定以及采样频率低时控制精度差的问题。针对这一问题，为两电平三相整流器提出一种快速矢量选择的三矢量模型预测低频控制。以无差拍控制原则得到了整流器的电压参考矢量，简化了预测过程；由功率跟踪控制的指标函数推导得到电压跟踪控制的指标函数；最后，根据扇区确定控制周期作用的2个有效矢量和零矢量，由电压跟踪控制函数得到了3个矢量的作用时间。通过仿真验证可知，与传统FCS-MPC相比，所提方法能够快速选择电压矢量，实现开关频率的固定，减小功率脉动并降低开关频率。
Abstract:The finite control set model predictive control (FCS-MPC) has the problems of large computation unfixed switching frequency, and poor control accuracy when the sampling frequency is low. Aiming at these problems, a fast selection of three-vector PWM rectifier based on model predictive low frequency control was proposed for the two-level three-phase rectifier. The voltage reference vector of the rectifier was obtained by the principle of deadbeat control, which simplified the prediction process. Then the cost function of the voltage tracking control was derived from the cost function of the power tracking control. Finally, the two effective vectors and zero vertor in a control period were determined according to the sector. The action time of the three vectors was obtained by the voltage tracking control function. Through simulation, compared with the traditional FCS-MPC, the proposed method can quickly select the voltage vector, achieve the fixed switching frequency, and reduce the power ripple the switching frequency.
标题：快速矢量选择的三矢量PWM整流器模型预测低频控制
英文标题：Fast Selection of Three-Vector PWM Rectifier based on Model Predictive Low Frequency Control
