www.gusucode.com > 三相电压型脉宽调制整流器定频模型预测控制 > 三相电压型脉宽调制整流器定频模型预测控制\文件说明.txt

    针对三相电压型脉宽调制(PWM)整流器有限控制集模型预测控制采样频率高、开关频率不固定的缺点,提出了一种定频模型预测控制方法。通过求解价值函数得到PWM整流器交流侧下一采样时刻所要输出的电压值,利用空间矢量脉宽调制技术输出计算得到的电压值,实现定频模型预测控制。仿真与试验结果表明:所提出的控制算法开关频率恒定,稳态电流谐波含量低,实现了整流器高功率因数运行。 Aiming at the shortcomings of high sampling frequency and low switching frequency for three - phase voltage - type pulse width modulation (PWM) rectifier finite control set model, a fixed - frequency model predictive control method is proposed. The value of the voltage to be output at the next sampling time of the AC side of the PWM rectifier is obtained by solving the value function. The calculated voltage value is output by the space vector pulse width modulation technique to realize the fixed frequency model predictive control. Simulation and experimental results show that the proposed control algorithm has a constant switching frequency and a low steady-state current harmonic content, which realizes the high power factor operation of the rectifier.