Space vector modulation for single-phase transformerless three-leg Unified Power Quality Conditioner

Unified power quality conditioner (UPQC) is an ideal compensation device to improve power quality for sensitive end-users. In this paper, a space vector modulation method is proposed for single-phase three-leg UPQC (TL-UPQC) and one possible special switching sequence with reduced switching losses i...

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Bibliographic Details
Published in2015 IEEE Applied Power Electronics Conference and Exposition (APEC) pp. 2859 - 2865
Main Authors Yong Lu, Guochun Xiao, Xuanlv Wu, Dapeng Lu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2015
Subjects
Couplings
Modulation
Operation efficiency
Power quality
Shunts (electrical)
Space vector modulation
Support vector machines
Switches
Unified power quality conditioner
Voltage control
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Summary:Unified power quality conditioner (UPQC) is an ideal compensation device to improve power quality for sensitive end-users. In this paper, a space vector modulation method is proposed for single-phase three-leg UPQC (TL-UPQC) and one possible special switching sequence with reduced switching losses is discussed based on it. The proposed modulation method is similar to the well-known space vector modulation widely used in three-phase converters, thus brings extra flexibility to the TLUPQC system. Additionally, with the special switching sequence, at least one leg of the TL-UPQC operates at line frequency and improved system efficiency will be obtained. Analysis, along with simulation and experimental results are presented to verify the feasibility and effectiveness of the proposed space vector modulation and switching sequence.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2015.7104756