Modelling and simulation of three phase power factor correctors with fast dynamic response based on fixed PWM and bang-bang control techniques using DC-DC SEPIC converter modules
by M.G. Umamaheswari; V. Sivasubramanian; S. Sam Swamya Vasanth; B. Lekshmi Sree; Veerapandiyan Veerasamy
International Journal of Power Electronics (IJPELEC), Vol. 13, No. 3, 2021

Abstract: The main concerns of the power supply industry is to obtain a single stage converter with a low-cost for achieving power factor correction (PFC) complying with required harmonic standards and regulated output voltage simultaneously for three-phase applications. This paper presents the modelling and simulation of single stage three phase power factor correctors using DC-DC SEPIC converter modules based on cascade control strategy. It uses outer loop using proportional-integral (PI) controller to regulate the output voltage and three inner fixed PWM/bang-bang controllers to shape the source current. PI controller parameters are determined by using TYREUS-LUYBEN tuning method. Performance analysis has been made for the two proposed approaches by comparing the simulation results. Results reveal that the proposed scheme provides the power factor close to unity, low % total harmonic distortion (THD), regulated output voltage for load variations and effective set point tracking. Experimental results using fixed PWM technique is also presented.

Online publication date: Fri, 23-Apr-2021

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