IEEJ Transactions on Industry Applications
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
Paper
Virtual Synchronous Generator Control for Single-Phase Three-Wire Systems
Yuko HiraseOsamu NoroShogo KatsuraKensho AbeEiji YoshimuraKazushige SugimotoKenichi Sakimoto
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2017 Volume 137 Issue 6 Pages 546-552

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Abstract

In Japan, commercial grid for ordinary residential houses consists of a single-phase three-wire system. In general, unbalanced load power is supplied by the commercial grid. Recently, there have been an increasing number of houses equipped with the emergency power units in preparation for possible power outages. However, because most of the conventional power inverters in these units cannot supply unbalanced power, home appliances must be reconnected to dedicated outlets when they are used in the grid-disconnected operation. To solve such an inconvenient situation, we propose a method that enables the uninterruptible power supply between the grid-connected and grid-disconnected operations for single-phase three-wire systems. This control method is mounted on the power inverters and is called the virtual synchronous generator (VSG) control. The method is developed expanding the previous method for a single-phase two-wire system.

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© 2017 by the Institute of Electrical Engineers of Japan
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