Experimental Study of the Isolated Operation of a Home DC Link System

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CIRED 2019 - 524.pdf (1.12 MB)

Paper number

524

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Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Miyazaki, Teru, Waseda University, Japan
Hirohashi, Wataru, Waseda University, Japan
Yoshinaga, Jun, Waseda University, Japan
Hayashi, Yasuhiro, Waseda University, Japan
Kobayashi, Kosuke, Tokyo Gas Co. Ltd, Japan
Tsukada, Tatsuya, Tokyo Gas Co. Ltd, Japan

Abstract

This study focused on isolated power operation in a domestic home during a blackout. This type of operation has attracted much attention along with the growing availability of renewable energy technologies such as photovoltaic (PV) panels and battery energy storage systems (BESSs). Isolated operation needs to afford long-term sustainability even though the blackout situation may be limited. Thus, it is desirable to charge the BESS with generated power as far as possible. Recently, hybrid-type power conditioner systems (PCSs) have appeared on the market that are connected to a PV and BESS on the direct current (DC) side, known as a DC link system. The system enables the charging of the BESS with output from the PV regardless of the capacity of the PCS.Experiments were conducted to verify the effectiveness of isolated operation using a DC link system. The three types of renewable power generation equipment(PV, BESS, and Fuel Cell (FC)) were used to supply power in an experimental smart home along with plausible blackout scenarios. The results suggested that the DC link system could contribute to continuous isolated power operation. In comparison with a conventional system, isolated operation using the DC link system could direct more surplus power from the PV to charging the BESS. On the other hand, the FC stopped in some cases, and additional experiments were conducted. The results identified issues to be solved for a stable power supply during isolated operation.

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Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

Permanent link to this record

https://cired-repository.org/handle/20.500.12455/45
http://dx.doi.org/10.34890/98

ISSN

2032-9644

ISBN

978-2-9602415-0-1