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| 摘要: |
| 直流输电的核心是自换相电压源换流器,采用复杂可编程逻辑器(CPLD)和数字信号处理器(DSP)构成一个轻型直流输电动模室换流控制器。介绍了由自换相电压源换流器、换流电抗器、直流传输线和交流滤波器4个主要部分组成的轻型直流输电系统结构,在此结构上,根据直流输电的控制原理给出了基本控制策略:一端采用定直流电压控制有功,另一端采用定直流电流控制有功。详细分析了DSP和CPLD在换流控制器中的作用:DSP负责数据的采集和系统控制;CPLD则负责脉宽调制(PWM)波的产生和A/D转换器的逻辑控制。结果表明:换流控制器的实时性和稳定性得到了大幅度提高。 |
| 关键词: CPLD,DSP,轻型直流输电,电压源换流器 |
| DOI： |
| 分类号:TM721.1 |
| 基金项目: |
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| Design of converting controller of HVDC-Light simulation lab based on CPLD and DSP |
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SONG Xiao-quan SUN Ling-sheng
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| Abstract: |
| As VSC(Voltage Source Converter) is the core of HVDC(High Voltage Direct Current transmission),CPLD and DSP are used to build up the converting controller of VSC for a HVDC-Light simulation lab.The HVDC system is composed of VSC,reactor,transmission line and AC filter,for which the basic control strategy is based on the HVDC-Light control theory:fixed voltage at one end and fixed current at the other end are adopted to control the active power.Functions of CPLD and DSP are analyzed:DSP is responsible for data collection and system control while CPLD for PWM generation and logic control of A / D convert.The result shows that the stability and real-time performance of controller are greatly improved. |
| Key words: CPLD,DSP,HVDC-Light,VSC |
