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.
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 achieve high power factor and stable output voltage.
作者
张明存
ZHANG Mingcun(School of Information and Electronic Engineering,Lu′an Vocational Technical College,Lu′an Anhui 237158)
出处
《宁夏师范学院学报》
2024年第1期39-45,共7页
Journal of Ningxia Normal University
基金
安徽省高校优秀青年人才支持计划项目(gxyq2020125).
