Study of Supercapacitor Energy Storage Converter with Unbalanced and Nonlinear Loads

Ning Ning Li; Xi Sheng Tang; Guo Wei Zhang

doi:10.4028/www.scientific.net/AMM.494-495.1561

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 494-495Study of Supercapacitor Energy Storage Converter...

Study of Supercapacitor Energy Storage Converter with Unbalanced and Nonlinear Loads

Abstract:

A novel topology structure of supercapacitor energy storage converter (ESC) is presented with two cascaded bidirectional DC/DC converters connected to a bidirectional DC/AC converter. It can promote the energy utilization rate of supercapacitor and improve the ability of powering unbalanced and nonlinear loads. The effect of the midpoint voltage fluctuation of the cascaded connected DC bus capacitors on output voltage is analyzed, followed by the influence mechanism unbalanced and nonlinear loads. The control strategy to restrain the unbalance and zero sequence harmonic is proposed. The theoretical analysis and the proposed method are verified through simulations and experiments on a 100kVA supercapacitor ESC prototype.

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Periodical:

Applied Mechanics and Materials (Volumes 494-495)

Pages:

1561-1568

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.494-495.1561

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Online since:

February 2014

Authors:

Ning Ning Li*, Xi Sheng Tang, Guo Wei Zhang

Keywords:

Cascaded DC/DC Converters, Nonlinear Load, Super-Capacitor (SC), Unbalanced Load, Zero Sequence Harmonic

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* - Corresponding Author

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