Abstract:

The control system of the PSM high voltage power supply in the HL-2A tokamak power supply was presented. The control system based on DSP & FPGA, including parts of driving, communication, computation and feedback, generated 112 pulses to make IGBT modules turn on or off quickly in order to keep the output voltage steady. The upper computer was based on VB and could set experimental parameters then communicated to DSP by CAN BUS. DSP & FPGA completed the computation and feedback. The composing and debugging of software code and the testing of the whole system were accomplished. The results showed that the control system meets the requirements.

Key words: PSM, High voltage, DSP chip, CANBUS

摘要：

介绍了HL-2A装置上用于二级加热系统的PSM高压脉冲电源的反馈控制系统。该电源控制系统以DSP+FPGA作为控制核心，输出112路驱动脉冲，以此来控制112个IGBT的通断，包括了驱动、通信、计算、反馈等部分，使电源系统输出稳定高压。设计了远程通信系统，其中基于VB的上位机与控制系统之间采用CAN总线技术来实现电源系统的相关参数设定及传输。DSP与FPGA实现了计算、反馈等功能。完成了相关的代码编写与系统测试。实验测试结果表明，该控制系统实现了高压电源的稳定输出，满足了实验的需求。

关键词: PSM, High voltage, DSP chip, CANBUS