基于Matlab空心线圈积分电路设计+文献综述
关键词：Rogowski线圈 变化电流 电流传感器 积分电路 Simulink 环境8201
Title Integral circuit design of hollow coil based on matlab
Abstract
The output signal of hollow current transformer is the differential of primary current
signals, in order to effectively restore primary side current signal, we usually need to
add a integral circuit to the output side. The parameter selection of integral circuit
directly influence the true extent of conditioning signal, so the right parameter is the
guarantee of follow-up relay protection equipment. This article design a kind of new
type Rogowski coil with integral circuit based on analyzes of integrator characteristics.
It is a kind of voltage series type negative feedback amplifying circuit with big positive
input impedance. With building circuit model in Simulink environment to simulate,
This article show that this new integrator can reflect the real fault current and transient
current and effectively restrain the interference of the zero shift integrator of sensor.
Keywords： Rogowski coil，mutative current，current sensor，integrating circuit，
Simulink 目 次
1 引言1
1.1 Rogowski 线圈结构与特点1
1.2 关于罗氏线圈的积分电路1
1.2.1 影响罗氏线圈测量准确度的因素1
1.2.2 典型的外积分电路2
1.2.3 Rogowski 线圈带电压负反馈模拟积分器2
1.2.4 新型积分电路3
2 基于运放的受控源设计及仿真4
2.1 运算放大器的结构与特点4
2.1.1 运算放大器的电路符号4
2.1.2 运算放大器的工作电源4
2.1.3 理想运放模型4
2.1.4 Simulink 仿真中运算放大器的建模5
2.2 四种受控源的基本电路7
2.2.1 电压控制电压源8
2.2.2 电压控制电流源9
2.2.3 电流控制电压源10
2.2.4 电流控制电流源11
3 基于运放的基本运算电路13
3.1 加法电路13
3.2 减法电路14
3.3 比例电路17
3.4 积分电路18
3.5 微分电路19
4 积分电路的参数选取及仿真20
4.1 理想积分器20
4.1.1 理想积分器的参数选取20
4.1.2 理想积分器的频率特性21
4.2 带反馈电阻积分器23
4.2.1 带反馈电阻积分器的参数选取23
4.2.2 带反馈电阻积分器的频率特性23
4.3 电压串联型负反馈积分电路24
4.3.1 新型积分电路原理图24
4.3.2 积分器的零漂处理25
4.3.3 新型积分电路的 Simulink 仿真26
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