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Control of Uninterrupted Switching Using a Virtual Synchronous Generator Between Stand‐Alone and Grid‐Connected Operation of a Distributed Generation System for Houses
Author(s) -
Lung Chienru,
Shintai Toshinobu,
Kakigano Hiroaki,
Miura Yushi,
Ise Toshifumi
Publication year - 2015
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22601
Subject(s) - inverter , phase locked loop , grid , photovoltaic system , scheme (mathematics) , cogeneration , computer science , distributed generation , engineering , control (management) , control system , power (physics) , control engineering , electrical engineering , voltage , electricity generation , renewable energy , mathematical analysis , physics , geometry , mathematics , quantum mechanics , artificial intelligence , jitter
SUMMARY The home applications of distributed generations facilities such as photovoltaic and gas engine cogeneration systems are growing and many distributed generations are connected to a grid by a DC/AC inverter. The DC/AC inverter is controlled by a phase‐locked loop (PLL) in order to be synchronized with the power system frequency. However, the control scheme of stand‐alone operation uses voltage control, and the PLL is unnecessary. Therefore, it is hard to realize uninterrupted change between stand‐alone and grid‐connected operation. In this paper, we propose a virtual synchronous generator control scheme in order to use the same control scheme in stand‐alone and grid‐connected operation. We carried out experiments to demonstrate the control characteristics.