Three phase six-switch PWM buck rectifier with power factor improvement

6th Vacuum and Surface Sciences Conference of Asia and Australia

Khan, M. Zafarullah^1 ; Naveed, M. Mohsin^1 ; Hussain, D. M. Akbar^2

Institute of Industrial Control Systems, P.O Box, 1398, Rawalpindi, Pakistan^1

Department of Energy Technology, Aalborg University, Denmark^2

关键词: Controlled rectifier;    Current harmonics;    Matlab simulations;    Power factor improvement;    Prototype converter;    Sinusoidal pulse width modulation;    Switching techniques;    Unity power factor;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/439/1/012028/pdf
DOI  :  10.1088/1742-6596/439/1/012028

来源: IOP

【 摘 要 】

Conventional Phase Controlled Rectifier injects low order current harmonics into the AC mains. Large size filtering components are required to attenuate these harmonics. In this paper, three phase six-switch PWM buck rectifier is presented which operates at nearly unity power factor and provides variable output voltage. Small size energy storing components are required depending upon switching frequency. MATLAB simulation is performed and modified Sinusoidal Pulse Width Modulation (SPWM) switching technique is used in 3kW prototype converter to demonstrate low input current THD, nearly unity displacement factor, well regulated output voltage and reduced switching losses compared to conventional SPWM.