Research on AC-DC converter circuit with controllable power factor based on MATLAB
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.
Boost converterPower factor correctionSmall signal analysisDouble loop control
NETL
NSTL
万方数据
维普
