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LI Zhankai, WANG Jingqin, ZHANG Fumi. Research of optimized compensation strategy for mine-used dynamic voltage restorer[J]. Journal of Mine Automation, 2016, 42(1): 28-32. DOI: 10.13272/j.issn.1671-251x.2016.01.009
Citation: LI Zhankai, WANG Jingqin, ZHANG Fumi. Research of optimized compensation strategy for mine-used dynamic voltage restorer[J]. Journal of Mine Automation, 2016, 42(1): 28-32. DOI: 10.13272/j.issn.1671-251x.2016.01.009
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Research of optimized compensation strategy for mine-used dynamic voltage restorer

  • Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability, Hebei University of Technology, Tianjin 300130, China

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  • To solve low utilization of DC-link capacitor of mine-used dynamic voltage restorer under long voltage sag, an optimized compensation strategy was proposed, namely a smooth transition between pre-sag compensation and in-phase compensation, so as to restrain aberration of load voltage during the sag, reduce amplitude of injected voltage of dynamic voltage restorer and increase compensation time. The experimental results verify feasibility and reliability of the strategy in balanced and unbalanced grid voltage sag.
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