基于MATLAB的功率因数可控的AC-DC变换电路研究
Research on AC-DC converter circuit with controllable power factor based on MATLAB
张明存1
作者信息
- 1. 六安职业技术学院信息与电子工程学院,安徽六安 237158
- 折叠
摘要
为解决谐波信号过多可能会导致电网的传输效率降低的问题,对功率因数可控的AC-DC变换电路进行了研究.基于Boost型单级有源功率因数校正变换器,控制电路中采用了外电压环和内电流环双闭环控制系统,利用滞环电流控制提高交流端功率因数,电压环稳定输出电压.采取小信号分析法,建立小信号模型并设计了控制电路.通过MATLAB仿真实验可得,双环控制的功率因数校正电路能够实现高功率因数,同时能够稳定输出电压.
Abstract
To solve the problem that excessive harmonic signals may lead to a decrease in the transmission efficiency of the power grid,the power factor controllable AC-DC converter circuit is studied.Based on the Boost single-stage active power factor correction converter,a double closed-loop control system with an external voltage loop and an internal current loop is adopted in the control circuit.Hysteresis current control is used to improve the AC power factor and the voltage loop stabilizes the output voltage.Small signal analysis method is adopted to establish a small signal model and design a control circuit.The results of MATLAB simulation show that the double loop control power factor correction circuit can a-chieve high power factor and stable output voltage.
关键词
Boost型变换器/功率因数校正/小信号分析/双环控制Key words
Boost converter/Power factor correction/Small signal analysis/Double loop control引用本文复制引用
基金项目
安徽省高等学校优秀青年人才支持计划(gxyq2020125)
出版年
2024
NETL
NSTL
维普
万方数据