Analytical Design of Passive LCL Filter for Three-phase Two-level Power Factor Correction Rectifiers


This paper proposes a total symptomatic passive LCL channel plan procedure for three-stage two-level power factor rectification rectifiers (PFCs). The high repeat converter current swell makes the high repeat current music that ought to be tightened concerning the structure rules.


Thus, the present swell is used to definitely choose the required channel capacitance reliant on the best charge of the channel capacitor. To pick the grid side inductance, two strategies are analyzed. First procedure uses the structure of the damping to express the system side channel inductance as a component of the converter current swell.


Fig. 1. (a) The schematic of a three-phase two-level PFC and (b) the generic equivalent circuit of the filter.




Fig. 2 Configuration I: the harmonic performance of the (a) converter current (b) grid current. Configuration II: (c) the current behavior of the filter capacitor, converter side induct or, and damping branch (d) grid current and its harmonic.


This paper has shown a comprehensive symptomatic system for arranging LCL channel of a three-organize control factor cure rectifier (PFC). The system is cleared up by the converter current and the voltage lead. The converter current swell chooses all the channel parameters and describes a sensible edge for them. A general condition is resolved for the most outrageous converter current swell which is proper for sinusoidal PWM and third-symphonious implantation PWM. The examination is performed for solidarity control factor.


The fundamental system uses the properties of the damping methodology and decides the required grid side inductance as a part of the damping resistor and the converter current swell. The second technique revolves around decreasing the influence adversity in the channel and improving it by using line impedance modification mastermind (LISN).

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