Keiji Akamatsu
Panasonic
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Keiji Akamatsu.
applied power electronics conference | 2016
Go Yamada; Takaaki Norisada; Fumito Kusama; Keiji Akamatsu; Masakazu Michihira
In recent years, there is an increasing demand for various types of storage battery systems, such as home battery systems, V2H(Vehicle-to-Home)/V2G(Vehicle-to-Grid) systems, and UPS systems. Performance requirements for the power conversion system within these storage battery systems are small size, light weight and high efficiency. We propose a new power conversion system so called the GAP-D3 converter that is a bi-directional power control system, comprising of a bi-directional switch circuit topology with natural commutation switching mode. This paper describes the features of GAP-D3 converter including this new current compensation control with simulation and experimental results.
applied power electronics conference | 2017
Hiroki Nagano; Ryota Kimikado; Masakazu Michihira; Keiji Akamatsu; Makoto Ozone; Takaaki Norisada
In recent years, next generation power semiconductor devices have attracted attention such as SiC device, GaN device and so on. By applying next generation power semiconductor devices to power conversion systems, its operation frequency becomes higher. As the results, small size, light weight and high efficiency of the power conversion system can be realized. However, when operation frequency becomes high, harmonics issue is caused. Therefore, harmonics analysis of the power conversion system is very important. In order to analyze the harmonics in detail, this paper proposes Wavelet transform analysis as the time-frequency analysis. This paper describes the feature of the Wavelet transform from experimental results.
Archive | 2004
Manabu Inoue; Takuya Ishii; Keiji Akamatsu; Masaaki Kuranuki; Hiroki Akashi
Archive | 2006
Keiji Akamatsu; Kenji Ogawa; Mitsuo Ueda
Archive | 2006
Keiji Akamatsu; Kenji Ogawa; Mitsuo Ueda
Archive | 2006
Keiji Akamatsu; Kenji Ogawa; Mitsuo Ueda
Archive | 2015
Sohei Okamoto; Goh Yamada; Daisuke Fukuda; Takaaki Norisada; Keiji Akamatsu
Archive | 2014
Osamu Kusumoto; Hideki Nakata; Keiji Akamatsu; Masao Uchida
Archive | 2009
Mitsuhiro Murata; Takuji Tsujita; Masaharu Terauchi; Toshikazu Wakabayashi; Hiroshi Asano; Shinichiro Hashimoto; Keiji Akamatsu
Archive | 2017
Fumito Kusama; Takaaki Norisada; Goh Yamada; Keiji Akamatsu