Current Harmonics Cancellation in Three-phase Four-wire Systems by Using a Four-branch Start Filtering Topology
Location: USA
Publication date: 2009-08-01
Published in: IEEE Transactions on Power Electronics, August 2008
ref. DOI: 10.1109/TPEL.2009.2017810

Local members

Alvaro Luna

PhD. Senior Researcher.

Jose Ignacio Candela

PhD. Senior Researcher. Project Responsible

External members

Asiminoaei, L. , Teodorescu, R. , Blaabjerg, F.



This paper presents a new solution for filtering current harmonics in three-phase four-wire networks. The original four-branch star (FBS) filter topology presented in this paper is characterized by a particular layout of single-phase inductances and capacitors, without using any transformer or special electromagnetic device. Via this layout, a power filter, with two different and simultaneous resonance frequencies and sequences, is achieved-one frequency for positive-/negative-sequence and another one for zero-sequence components. This filter topology can work either as a passive filter, when only passive components are employed, or as a hybrid filter, when its behavior is improved by integrating a power converter into the filter structure. The paper analyzes the proposed topology, and derives fundamental concepts about the control of the resulting hybrid power filter. From this analysis, a specific implementation of a three-phase four-wire hybrid power filter is presented as an illustrative application of the filtering topology. An extensive evaluation using simulation and experimental results from a DSP-based laboratory prototype is conducted in order to verify and validate the good performance achieved by the proposed FBS passive/hybrid power filter.


Associated projects

National public