An investigation on optimal current mode control for boost-type PWM rectifiers

• Main Authors: Nicolae, DV, Ehlers, PJ, Richards, CG
• Format: Others
• Language: en
• Published: Tshwane University of Technology 2008
• Subjects: Control Systems; Harmonics
• Online Access: http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001163

Abstract-- Static power converters produce harmonics due to the nature of the conversion process. This paper will investigate the effect on the power factor of a sinusoidal and Fryze current reference on a PWM boost type rectifier. It has been shown in previous papers that a Fryze current ref is best. This paper will develop a mathematical model, based on the single sided Fourier expansion. Using this mathematical model it will be shown that even though a high harmonic content could be present in a Fryze controlled PWM boost type rectifier, the power factor has been optimally improved.