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Title: Analysis, control and design of a long-lifetime AC-DC bus converter within a nanogrid
Authors: Wu, H
Wong, SC 
Tse, CK 
Chen, Q
Issue Date: 2015
Publisher: Institute of Electrical and Electronics Engineers Inc.
Source: Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2015, 7104599, p. 1855-1860 How to cite?
Abstract: In an AC-DC hybrid bus nanogrid, a bidirectional converter is commonly used to transfer energy between the single-phase AC system and the DC system with stable operation and long lifetime. Therefore, the single-phase AC-DC converter should be designed to avoid using the short lifetime electrolytic capacitor. In this paper, a bidirectional single-phase AC-DC PWM converter using an additional line-level AC storage capacitor as the AC-DC power balancing device is proposed. A condition for zero ripple DC bus voltage is established such that a small DC bus capacitor can be used. Both the AC-DC power balancing and DC bus filtering capacitors can be designed small without using electrolytic capacitor in order to extend the converter lifetime. A control strategy that minimizes the size of capacitance is proposed, analyzed and verified. Finally, the analysis is verified by numerical simulations and experimental measurements.
Description: 30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015, 15-19 March 2015
DOI: 10.1109/APEC.2015.7104599
Appears in Collections:Conference Paper

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