1. NEDO PV roadmap 2009 http://www.nedo.go.jp/content/100080327.pdf
2. METI On response to large-scale connection of PV generators in Hokkaido 2013 http://www.hepco.co.jp/info/2013/pdf/130417b.pdf
3. Multi-functionalization and output smoothing in photovoltaic power generation system using moving average;Suzuki;Documents of IEEJ Semiconductor Power Conversion Study Group,2001
4. A method of PV output fluctuation reduction by modified moving average data processing;Suzuki;IEEJ Trans PE,2003
5. A comparison of electric power smoothing control eethods for distributed generation systems;Kanehira;IEEJ Trans PE,2014