Small-Signal Analysis and Controller Design of Anode Power Supply for ECRH

Abstract

The anode power supply is very important to the stability of the output wave power of the electron cyclotron resonance heating (ECRH) system. In order to improve the stability and anti-interference ability of the anode power supply, the small-signal analysis and controller design of the anode power supply are carried out in this article. First, the anode power supply is simplified and equivalent. Then, the LCC resonant circuit and the linear amplification circuit are established, respectively, for detailed analysis and research, and the small-signal models of these two parts are established. The transfer function of the whole system is obtained, the stability and rapidity of the anode power supply are analyzed, and the controller parameters are designed. Finally, the simulation model and prototype are built. The experimental results show that the system has better dynamic response ability and anti-interference ability after adding the controller.