An interleaved active power filter with reduced size of passive components
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In this paper an interleaved active power filter concept with reduced size of passive components is discussed. The topology is composed from two PWM interleaved voltage source inverters connected together on the ac-line and sharing the same de-link capacitor. The advantages of the proposed approach are: i) decreasing the line current ripple due to the interleaving, ii) reduction of the switching stress in the de-link capacitor, due to the shared connection, iii) more efficient implementation for high power applications because of the power sharing and possibility of a lower switching frequency. The paper analyzes the design of the passive components and gives a solution for minimization of the circulation currents between the inverters, by using common mode coils. Different simulations are discussed to validate the analysis and experimental results on a three-phase 10 kVA, 400 V, active power filter prototype are presented. 2006 IEEE.
