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| 摘要: |
| 采用数字信号处理器(DSP)TMS320LF 2407和现场可编程门阵列(FPGA)EP1C6设计数字比例积分(PI)调节器。DSP主要完成采样、PI调节和通信等,实现偏磁式消弧线圈励磁电流的数字控制。FPGA主要用于生成晶闸管触发脉冲及触发保护等。通过建立PI输出和控制角的线性化函数,简化控制程序,使励磁电流快速跟踪给定电流。介绍了系统的硬件和软件设计,其中晶闸管触发系统由同步、移相、脉冲形成、脉冲放大等环节构成。分别采用C和VHDL语言开发了DSP和FPGA模块,并提供了主程序及采样中断程序流程。实验表明该系统励磁电流动态响应小于5 ms,满足偏磁式消弧线圈的控制要求。 |
| 关键词: 偏磁式消弧线圈,励磁电流,PI调节器,DSP,FPGA |
| DOI： |
| 分类号:TM571.65 |
| 基金项目: |
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| Digital excitation regulator based on DSP and FPGA for arc-suppression coil |
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SHAO Guo-Jun CAI Xu
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| Abstract: |
| DSP(Digital Signal Processor) TMS320LF 2407 and FPGA(Field Programmable Gate Array)EP1C6 are used to design a digital PI(Proportional-Integral) regulator.The DSP realizes functions of sampling,PI regulation,communication and so on to digitally control the excitation current of arc-suppression coil with magnetic bias.The FPGA realizes functions of trigger pulse generation and trigger protection.Linear functions of the PI regulator output and the trigger angle simplify the control program and make the excitation current follow the set current quickly.The system hardware and software are introduced.Synchronization,phase shift,pulse generation and pulse amplification are involved in the thyristor trigger system.DSP and FPGA modules are developed with C and VHDL languages respectively.Flowcharts of the main program and the sampling interruption program are provided.The experiment shows that the dynamic response of excitation current is less than 5 ms,meeting requirements of arc-suppression coil with magnetic bias. |
| Key words: arc-suppression coil with magnetic bias,excitation current,PI regulator,DSP,FPGA |
