Two-Level Grid-Connected Discharge Inverter System of Power Battery Based on LLC

Yue Yu; Qiang Yin; Meng Xue Xie; Xiao Dan Ren

doi:10.4028/www.scientific.net/AMR.1070-1072.1278

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1070-1072Two-Level Grid-Connected Discharge Inverter System...

Two-Level Grid-Connected Discharge Inverter System of Power Battery Based on LLC

Abstract:

In order to overcome the large amounts of energy waste in the process of power battery discharge, the two-level grid-connected discharge inverter system of power battery based on LLC is designed. It is composed of LLC resonant full-bridge DC/DC and inverter. The DC-bus voltage is changed and the discharge current is stabilized by adjusting the frequency of the LLC resonant full-bridge DC/DC. The dual-loop control is applied in the inverter system. The stabilization of DC-bus voltage is achieved in the external voltage loop, while the grid-connected is implemented by controlling the grid-connected current in the inner current loop. A prototype is manufactured. The experiment results indicate that it has the characteristics of low harmonic current, high power factor and constant current discharge, and then proves that the inverter system is effective.

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Periodical:

Advanced Materials Research (Volumes 1070-1072)

Pages:

1278-1281

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1070-1072.1278

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Online since:

December 2014

Authors:

Yue Yu, Qiang Yin*, Meng Xue Xie, Xiao Dan Ren

Keywords:

Grid-Connected Discharge, Harmonic, Inverter System, LLC Resonant

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