MICROCAP SIMULATION TO DEVELOP A PHASE-CONTROLLED POWER-FACTOR CORRECTOR

Abstract

This paper describes an optimization method how a traditional phase-controlled rectifier can be used as a power-factor corrector. In order to maximize the power factor and respectively minimize the harmonic content of the input current of this corrector, optimal values of smoothing inductance and firing angle must be selected. To find and provide this operating point the MICRO-CAP II electrical circuit analysis program is used. The power- factor correcting methods are summarized and compared with this system. The problems caused by the line-current harmonics and standards are introduced to call attention to the importance of use of these converters.