航空400Hz三相高功率因数PWM整流器的零静差矢量控制

400Hz Aeronautical Three-Phase PWM Rectifier Based on Vector Control With Zero-Static-Error Compensation

提出并采用一种基于矢量控制的零静差控制方案来实现对航空400Hz三相PWM整流器的有效控制。传统的直接电流比较控制由于电流的参考信号是交流正弦波,因而存在着交流输入电流基波与输入电压有相位误差的问题。本文提出的零静差矢量控制技术,利用dq旋转坐标变换将电流参考信号设定为直流,使系统在整个输出负载范围内,交流输入电流基波相位与输入电压相位始终保持同相位、零误差,从而获得高功率因数值。在对控制方案详细分析后,采用Saber软件进行仿真验证,最后在一台航空400Hz三相PWM整流器原理样机上进行实验验证。实验表明交流输入电流基波相位完全跟踪输入电压相位,达到了较好的实际效果。

In this paper,a vector control strategy for the 400Hz aeronautical three-phase pulse width modulation（PWM）rectifier with zero static error compensation is presented.Due to sinusoidal reference,static error exists in direct current control.With the control strategy in this paper,the static error problem is solved well and the input fundamental currents in three-phase system are in phase with their respective line voltages over the entire load range.High power factor（PF）and low total harmonic distortion（THD）are achieved.At last both Saber simulation results and experimental results verify the validity of the vector control method.