【摘要】 配电网静止无功发生器 (D- STATCOM)是电能质量技术的重要组成部分 ,控制器系统作为其关键部分 ,直接影响到 D- STATCOM的运行性能。该文介绍了特定谐波消除算法 (SHE- PWM)的基本原理和 D- STATCOM控制系统的硬件和软件构成 ,利用 PSCAD仿真软件分析了 D-STATCOM在各种工作情况下的控制效果 ,并应用数字信号处理器 (DSP)设计了相角和脉宽精度达到 0 .0 1°的 D-STATCOM 控制器和脉冲发生器。仿真结果表明 D-STATCOM性能优越 ,满足配电系统的要求 ;SHE- PWM算法很好地消除了输出电压、电流中的 5 ,7,11次谐波。实验结果验证了 D- STATCOM多 CPU控制系统的设计正确可行。更多还原

【Abstract】 Distribution static compensators (D -STATCOM) are an important part of power quality conditioners with their control subsystem playing a very important role in the operation of the D -STATCOM. This paper presents the fundamental principles of the selective harmonic elimination pulse width modulation (SHE -PWM) technique and the hardware and software designs for such control systems. The artificial effect of D -STATCOM was analyzed for various operating conditions. A digital signal processor (DSP) was used to design the controller and pulse generator with the error of phase and pulse less than 0.01°. Simulation results indicates that the equipment will perform well. The 5th, 7th, 11th harmonics were effectively eliminated by the SHE -PWM algorithm. Experiments show that a multiple -CPU system is possible.更多还原