Three-phase PFC control strategy based on fractional-order PID controller

2018 International Conference on New Energy and Future Energy System

Guo, R.^1 ; Qian, P.^1

Shanghai Institute of Technology, Shanghai

201499, China^1

关键词: Active power factor corrections;    Control strategies;    Fractional-order PID controllers;    Harmonic currents;    Harmonic pollution;    PI control strategy;    Power electronic devices;    Simulink simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/188/1/012047/pdf
DOI  :  10.1088/1755-1315/188/1/012047

来源: IOP

【 摘 要 】

With the development of power electronics, more and more power electronic devices are being put into use in the power grid, causing serious harmonic current pollution to the power grid. Active power factor correction (APFC) technology is an important technology for solving harmonic current pollution and has been widely studied and developed. Three-phase PFC based on PWM technology can eliminate harmonic pollution on the grid side and improve power factor and work efficiency. Traditional three-phase PFC generally adopts double PI control strategy of voltage outer loop and current inner loop. However, this traditional control strategy has been unable to adapt to the increasingly complex grid situation. This paper proposes a control strategy that adopts PI controller for voltage outer loop and fractional-order PID controller for current inner loop. And through the Simulink simulation experiment, the result proves that the improved three-phase PFC control strategy presented in this paper has a more stable output voltage and less ripple compared with the traditional dual PI control strategy.