【摘要】 针对三相三线系统和电网电压畸变及不对称的问题,研究了一种新型的三相锁相环的谐波检测方法。为了更好的减小跟踪误差,设计开发了一种模糊PI自适应控制器,通过在线整定也可以起到减小稳态误差的效果。研究内容基于并联有源电力滤波器(SAPF)的工作原理展开,该设计采用了基于DSP与FPGA的硬件设计以及双DSP的软件控制系统,通过搭建380 V/150 A的三相全桥结构SAPF实验装置,对控制策略的正确性和设计的有效性进行了验证。更多还原

【Abstract】 A new method of harmonic detection of three-phase phase-locked loop is studied for three-phase three-wire system and voltage distortion and asymmetry of power grid. In order to reduce better the tracking error,a fuzzy PI adaptive controller is developed,which can also reduce the effect of steady-state error by online setting. Research contents are developed on the principle of parallel active power filter(SAPF). The design is based on DSP,FPGA hardware design and the double DSP control system software,through building the three-phase 380 V/380 A whole bridge structure SAPF experiment device,the correctness of the control strategy and the validity of design are verified.更多还原