Abstract:

The high voltage power supply of the low hybrid heat ing system for the HL-2A tokamak includes numerous energy storage elements and non-linear elements. Its output voltage will decline to a certain extent as the load of the klystrons is connected to it , and in the course of the HL-2A tokamak discharge, the output voltage will also change while the output voltage of the preceding power supply of the 125MVA M-G set changes. In order to resolve the problem, simulation using MATLAB is carried out. A strategy of PID feedback control and feed-forward compensat ion is used. Design and parameters choice of the PID controller are analyzed in detail. The experiment results show that this strategy designed according to the simulation can meet the requirements of the voltage stability of the power supply very well.

Key words: Voltage decline;PID feedback control, Feed-forward compensation, Simulation, Load voltage stability

摘要：

中国环流器二号A( HL- 2A) 装置低混杂波辅助加热系统的脉冲高压电源系统包含大的储能元件和非线性元件, 其输出电压在投入负载速调管时会有一定程度的跌落, 并且在装置放电过程中, 前级电源) ) ) 125MVA 脉冲发电机输出电压变化大, 该输出电压也发生变化。针对该问题利用MATLAB 进行建模仿真, 对该电源系统采用了PID 反馈控制与前馈补偿策略, 并且对采用的PID 控制器的设计与参数选择作了详尽分析, 其实际应用结果表明该控制策略能很好地满足该电源电压稳定性的要求。

关键词: 电压跌落, PID 反馈控制, 前馈补偿, 仿真, 电压稳定性