Title :
A subharmonic stability of power factor correctors with dual-loop control system
Author :
Denisov, Yuriy ; Stepenko, Serhii
Author_Institution :
Dept. of Ind. Electron., Chernihiv Nat. Univ. of Technol., Chernihiv, Ukraine
Abstract :
This work is devoted to investigation of the power factor corrector´s (PFC) dual-loop control systems. Two control systems of PFC with different structures were studied: with main voltage and main current feedbacks. A subharmonic stability analysis has been performed for PFC based on conventional boost converter. However, the expression for input current of the storage inductor can be used for PFC based on zero-current switching quasi-resonant boost converter. The stability condition at the main subharmonic frequency has been formulated. The calculation results of the voltage change rate at the current loop input and factor of pulsations have been presented. The PFC subharmonic stability margin has been assessed and condition for choosing the reference voltage amplitude has been proposed.
Keywords :
electric current control; feedback; harmonics suppression; inductors; power factor correction; power system stability; resonant power convertors; voltage control; zero current switching; PFC; current feedback; current loop input; dual loop control system; power factor corrector; reference voltage amplitude; storage inductor; subharmonic frequency; subharmonic stability analysis; subharmonic stability margin; voltage change rate; voltage feedback; zero current switching quasi-resonant boost converter; Circuit stability; Reactive power; Stability analysis; Switches; Transfer functions; Voltage control; boost converter; control system; current feedback; dual-loop control; energy efficiency; power factor correction (PFC); subharmonic stability; voltage feedback;
Conference_Titel :
Electronics and Nanotechnology (ELNANO), 2015 IEEE 35th International Conference on
Conference_Location :
Kiev
DOI :
10.1109/ELNANO.2015.7146934
