基于模糊参数自校正PID控制的动态不间断电源补偿量直接检测法

Direct Detection Method of Compensation Signal for Dynamic Uninterruptible Power Supply Based on Fuzzy Parameters Self-correcting PID Control

针对带通滤波器会影响电压补偿量检测的实时性和补偿精度的问题,提出了基于模糊参数自校正PID控制的动态不问断电源(dynamic uninterruptible power supply,DUPS)补偿量直接检测法。该检测法可从故障信号中快速提取出基波分量,并结合瞬时序分量分解环节提取出基波正序电压分量,然后用直接检测法得到电压补偿量的大小。仿真结果表明,该方法具有实现简单、实时性好的特点,适用于对DUPS补偿量进行直接检测。

In view of the influence of band-pass filter on real-time performance of voltage compensation signal detection and compensation accuracy, a direct compensation signal detection method for dynamic uninterruptible power supply （DUPS） based on fuzzy parameters self-correcting PID control is proposed. With the proposed detection method the fundamental component can be rapidly extracted from fault signal, and then the positive sequence voltage component in fundamental component can also be extracted by means of instantaneous decomposition link, on this basis the quantity of voltage compensation can be solved by direct detection algorithm. Simulation results show that the proposed detection method that integrates fuzzy parameters self-correcting PID control with direct detection algorithm is easy to implement and possesses good real-time performance, so it is suitable to the direct detection of the compensation quantity of DUPS.