Design of Filters of Active-Front-End Two-Level Voltage-Source Converters
Jalili, K.
Bernet, S.
Converteam GmbH, Berlin;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: May 2009
Volume: 56,
Issue: 5
On page(s): 1674-1689
ISSN: 0278-0046
INSPEC Accession Number: 10601694
Digital Object Identifier: 10.1109/TIE.2008.2011251
First Published: 2009-01-06
Current Version Published: 2009-04-28
Abstract
This paper introduces a new iterative design procedure of L and LCL filters for low-voltage active-front-end PWM two-level voltage source converters. The analytical expression of the converter harmonic voltages by Bessel functions is applied to design the filter parameters for defined maximum grid current harmonics. Different filter designs are derived for various resonance frequencies and inductance split factors of LCL filter. The minimum amount of stored energy of passive components is used to select a final filter design. A voltage-oriented control scheme, including active damping, is applied in the (400 V and 50 kVA) experimental setup. Both simulation and experimental investigations are presented to verify the accuracy of the filter design procedure. Finally, the steady state and transient performance of the active front end with different LCL filters are depicted.
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