带偶倍频反电势负载的偏磁消弧线圈数字励磁系统  

Digital Excitation Regulator of Arc-suppression Coil with Even Frequency Reverse Electromotive Force Load

作　　者：邵国君[1] 蔡旭[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海市200030

出　　处：《电力系统自动化》2006年第11期67-71,共5页Automation of Electric Power Systems

基　　金：国家重点新产品研究计划项目(2002ED620004)。

摘　　要：分析了偶倍频反电势负载对三相整流的影响,采用数字信号处理器(DSP)作为控制芯片,实现了偏磁式消弧线圈的励磁电流的数字控制,通过PI调节器输出和触发角的线性化处理,并对励磁电流滤波、取平均值,消除了偶次谐波的影响,准确反映直流量,简化了程序,使励磁电流能快速跟踪给定;以现场可编程门阵列(FPGA)作为触发脉冲生成器,精确性高,并具有相序自适应性。A digital excitation regulator of arc-suppression coil with even frequency reverse electromotive force load based on digital signal processor （DSP） is presented. The proposed regulator controls the excitation eurrent of arc-suppression coil with magnetic bias through the linearization between the output of PI regulator and trigger angle. It can filter and average the excitation current to eliminate the infection of even frequency harmonious waves and give the measurement of excitation current precisely, which simplifies the program and makes excitation current run after input quickly. The digital trigger to silicon controlled rectifier based on field programmable gate array （FPGA） has high accuracy and the ability of phase self-adjusting.

关 键 词：偏磁式消弧线圈 励磁电流 PI调解器 DSP FPGA 

分 类 号：TM864[电气工程—高电压与绝缘技术]