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Dive into the research topics where Masato Koyama is active.

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Featured researches published by Masato Koyama.


ieee industry applications society annual meeting | 1994

Smart IGBT model and its application for power converter design

Masahiro Kimata; Masato Koyama; R. Uchida; M. Ikeda; T. Kawamura; T. Okada

This paper proposes a novel IGBT model suitable for analyzing the static and dynamic switching characteristics of IGBT modules, which are widely used in power converter circuits. This model is a subcircuit model derived from the basic IGBT equivalent circuit, and can be implemented in the circuit simulator SPICE without modifying the simulator codes nor using user-defined subroutines. Model parameters are easily extracted from measured electrical characteristics of IGBT modules. The validity of this model is confirmed by experimental results. Some simulation results are also presented to indicate the availability of this IGBT model for accurately estimating the performance of power converters and for designing their robust snubber protection circuits.<<ETX>>


Archive | 1983

Controller for induction motor

Masato Koyama; Akira Imanaka; Masahiko Iwasaki


Archive | 1993

Position controller for controlling an electric motor

Masato Koyama; Tetsuaki Nagano


Archive | 2002

Hybrid vehicle power control apparatus and hybrid construction equipment using the power control apparatus

Masayuki Komiyama; Toshio Sora; Masato Koyama; Michio Kataoka


Archive | 1998

Method of and device for controlling pulse width modulation inverter

Miho Okuyama; Masato Koyama


Archive | 1985

Control system for induction motor

Masato Koyama


Archive | 1992

High frequency DC/AC power converting apparatus

Masato Koyama


Archive | 1993

Three-level three-phase inverter apparatus

Takao Kawabata; Masato Koyama


Archive | 1992

Control device of induction motor

Masato Koyama; Akira Imanaka


Archive | 1991

DC TO AC ELECTRIC POWER CONVERTING APPARATUS

Nobuo Sashida; Kazunori Sanada; Masato Koyama

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