NDLI: Analysis and specification of DC side voltage in Static Var Generator regarding compensation characteristics of generators

Content Provider	IEEE Xplore Digital Library
Author	Guopeng Zhao Jinjun Liu Xin Yang Weiwei Gan Zhaoan Wang
Copyright Year	2008
Description	Author affiliation: Sch. of Electr. Eng., Xi'an Jiaotong Univ., Xian (Guopeng Zhao; Jinjun Liu; Xin Yang; Weiwei Gan; Zhaoan Wang)
Abstract	Design of DC side voltage rated value is a very important issue for the development of static var generators (SVG), but so far is lack of discussion in a quantitative manner from previous publications. In this paper, an extensive analysis on the influence of DC side voltage to the performance of SVG is carried out, and a specification of the DC side voltage rated value is presented. First, through equivalent circuit analysis and analytical expressions, a required lowest value of DC side voltage for full compensation (a unity total power factor) is obtained for both leading compensation and lagging compensation, where SVG is providing leading reactive current and lagging reactive current respectively. For the situation of DC voltage smaller than the above-obtained lowest value, there are two basic options for the SVG PWM control. One is to keep the linear modulation of PWM but loose the compensation capability to a unity power factor, for which case the quantitative relationship between the DC voltage and the total power factor after compensation is detailed. The other is to keep the unity power factor compensation capability through over modulation of PWM control, for which case the amount of lower order harmonics generated by SVG is also elaborated in the paper. Based on these analysis, the specification of DC voltage rated value for SVG is quite straight forward. Both simulation investigations and hardware experimental results are finally provided to verify the analysis and specification.
Starting Page	1235
Ending Page	1239
File Size	949030
Page Count	5
File Format	PDF
ISBN	9781424418732
ISSN	10482334
DOI	10.1109/APEC.2008.4522880
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-02-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DC generators Character generation Reactive power Pulse width modulation Circuit analysis Performance analysis Equivalent circuits Voltage control Power system harmonics Power generation
Content Type	Text
Resource Type	Article

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