J-TEXT 扰动场交流电源峰值反馈系统设计

核聚变与等离子体物理 ›› 2015, Vol. 35 ›› Issue (1): 63-68.

J-TEXT 扰动场交流电源峰值反馈系统设计

王刚，丁永华，易斌，饶波，南杰胤

(1. 华中科技大学电气与电子工程学院，武汉430074；2. 强电磁工程与新技术国家重点实验室，武汉430074)

收稿日期:2014-02-21 修回日期:2014-12-18 出版日期:2015-03-15 发布日期:2015-03-13
作者简介:王刚(1989-)，湖北潜江人，硕士，从事电气工程研究。

Design of current feedback system for J-TEXT DRMP AC power based on digital peak value detection

WANG Gang, DING Yong-hua, YI Bin, RAO Bo, NAN Jie-yin

(1. School of Electrical and Electronic Engineering，Huazhong University of Science and Technology, Wuhan 430074;
2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074)

Received:2014-02-21 Revised:2014-12-18 Online:2015-03-15 Published:2015-03-13

摘要/Abstract

摘要：

在J-TEXT 装置上设计了一种基于现场可编程逻辑门阵列(FPGA)的数字式峰值检测电路，该电路先对负载电流进行模数(AD)转换，再经有限冲激响应(FIR)滤波器进行数字滤波，然后用峰值算法获取电流峰值，最后经数模转换器(DA)输出电流峰值。在此基础上，完成了扰动场交流电源负载电流峰值反馈系统的设计，实验结果表明系统动态性能好、检测精度高，能很好满足交流电源负载电流反馈控制的需要。

关键词: 交流电源, 峰值闭环控制, FPGA, FIR 滤波器

Abstract:

A digital peak detection circuit based on FPG A is designed on J-TEXT tokamak. By using this circuit, the signal of the load current is sampled by an analog-to-digital (AD) converter, and then filtered by a FIR digital filter. The peak value of each semi sinusoidal period is picked by using peak detection algorithm, and finally, the peak current is output by a digital-to-analog (DA) converter. Based on the digital peak detection circuit, the design of the load current’s peak feedback system of the power supply is completed. Experiment results show that the system dynamic performance and accuracy can meet the needs of the AC power’s load current feedback control well.

Key words: AC power, Peak closed-loop control, FPGA, FIR filter

中图分类号:

TL62

王刚，丁永华，易斌，饶波，南杰胤. J-TEXT 扰动场交流电源峰值反馈系统设计[J]. 核聚变与等离子体物理, 2015, 35(1): 63-68.

WANG Gang, DING Yong-hua, YI Bin, RAO Bo, NAN Jie-yin. Design of current feedback system for J-TEXT DRMP AC power based on digital peak value detection[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2015, 35(1): 63-68.

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