Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tominaga Shinji and Fujita Hideaki and Akagi Hirofumi,Application of Soft-Switching Technique to a DC Voltage-Controlled Static Var Compensator Using Quad-Series Voltage-Source Inverters.,IEEJ Transactions on Industry Applications,09136339,The Institute of Electrical Engineers of Japan,1997,117,4,449-455,https://cir.nii.ac.jp/crid/1390001204655300864,https://doi.org/10.1541/ieejias.117.449