单调谐滤波器的自动调谐控制

为解决滤波器失谐问题,建立了自动连续调谐滤波器的实验系统,在单调谐滤波器中引入自动调谐功能 自动调谐系统由连续可调电抗器和自动调谐控制系统组成。电抗器用双绕组正交磁化原理,改变控制绕组的直流 电流可在线连续调节电感量,电抗器有反向调节特性和足够的调节范围,能满足滤波器失谐的补偿要求。控制系 统以滤波器的h次谐波阻抗角为控制目标,采用PI调节规律和设定限幅与死区等策略,保证了自动调谐系统的性 能和稳定性。实验结果证明了失谐补偿策略的正确性和自动调谐滤波器的可行性。

Auto-Tuning Control of Single Tuned Filter

To eliminate the mis-tuning of a single tuned filter, an experimental system of auto-tuned filter with a continuously tunable reactor is developed, and an auto-tuning technique is introduced into the filter. The auto-tuning system is composed of a continuously tunable reactor and an auto-tuning control system. The tunable reactor is based on orthogonal magnetizing with two windings. The inductance of AC winding can be continuously adjusted by varying the direct current in control winding. The reactor has an inversely adjusting characteristic and wide enough tunable range to satisfy the mis-tuning compensation. The control system takes the h order harmonic impedance angle as a control objective, adopts a PI regulator and other strategy to ensure the performance and stability of the auto-tuning system. The experiment results show the correctness of mis-tuning compensation strategy and the feasibility of auto-tuned filter.