Comparison of Pi, Vsc and Energy Balance Controller for Single Phase Active Filter Control
نویسندگان
چکیده
control scheme respectively. The proposed active lilter consists This paper preSentS a comparison among proportional-integral. of SinoJe-phase pulse-width modulated (PWM) voltage source variable srnicncre voltage controller and enerty balance controller for i n v e r t e t (VSI) with a DC bus capacitor4 as an energy storage the control of single phme active filter. Proportional-integral (PI) and elemerd. A h y s t e r e s i s ba se dherless P W M current control variable structure fvsc) voltage controller haw been employed over ^ , ^ to ~ v e f a s t se to t h e a c t i v e fiker Cbus wltage of the actve filter. Energy balance controller is based controllers (Figure I), the dc bus voltage on the estimation of the active power required by the load and active . ° .. • • , , , . jlter.onthe A estimationsingle phnse IGBT based voltage source inverter (VSI) b used Of t h e a c t i v e ‘ I t e r is s e n s e d a n d is compared with the reference as active filter. A hpteresis rule basedcamerlesss current control is capacitor voltage. The error signal is then processed into employed owr active filter current, and derived signals are fid to the p w s c controller, the Outpa of the volt%e controkf estimates . devices ofM. To present a clear comparison ofP-I, VSC and energy the inslantaneou~ reference supply current, using instantaneously balance controller, a single phase non-linear load of same rating is sensed supply voltage. selected for compensation. Figure 2 shows the block diagram representation for the realization of energy balance based controller. As shown in
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Compensation Strategies for Shunt Active Power Filter in Single- and Three-Phase Systems: Different Formulation, Comparison and Evaluation
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