22. A Harmonic Analyzing Meter by PLL
(Tadashi Yamaguchi, Keiju Matsui, Kazuo Tsuboi and Fukashi Ueda)
Proceedings of the International Power Conversion, Intelligent Motion & HFPC Conference, Tokyo, Japan, 359-362 (1998).
23. A Novel PWM Strategy to Minimize the Surge Voltage for Current-Source Converters
(Keiju Matsui, Tadashi Yamaguchi, Shinichi Takase and You Yang)
IEEE Trans. on Industry Applications, 34, 3, 501-507 (1998).
24. A Simple Harmonic Meter Using Phase Locked Loop
(Keiju Matsui, Tadashi Yamaguchi, Kazuo Tsuboi and Fukashi Ueda)
Proceedings of the 24th Annual Conference of the IEEE Industry Applications Conference, St. Louis, U.S.A., 2360-2363 (1988)
25. A Simple and Low Cost Measuring Method for Harmonics in the Power System
(Tadashi Yamaguchi, Keiju Matsui, kazuo Tsuboi and Fukashi Ueda)
Conference Record of the 1998 IEEE Industrial Electronics Society, Aachen, Germany, 3/4, 1550-1553 (1998).