Kazuo Bessho

Improved Characteristics of Flux-Concentration Type Electromagnetic Pump Taking Account of Driving Frequency

宏 間々田, 和信 津山, 良一 白石, 外史 山田 et autres

The electromagnetic pump can transfer liquid metal in continuous close-circulating system. These pumps have higher reliability comparing with mechanical one. These features make the attractive pump suitable for transferring liquid sodium in fast breeder reactor. But in conventional electromagnetic pumps, a large-sized …

Harmonic balance finite element method taking account of external circuit and motion

Junwei Lu, Sotoshi Yamada, Kazuo Bessho

The alternating-current electric machines are usually excited by voltage sources and the external elements are connected in the magnetizing circuit. Therefore the magnetic fields including nonlinear characteristics, voltage sources and external circuits should be considered together in the analysis model. Furthermore, the …

Time-periodic magnetic field analysis with saturation and hysteresis characteristics by harmonic balance finite element method

Sotoshi Yamada, Junwei Lu, Kazuo Bessho

In this paper we shall further discuss the harmonic balance finite element method (HBFEM) for the time-periodic magnetic field with saturation and hysteresis characteristics and its applications. The HBFEM enables us to calculate the distribution of harmonic magnetic flux at an AC …

Alternating-current Magenetic Field Analysis INcluding Magnetic Saturation by a Harmonic Balance Finite Element Method

外史 山田, Junwei Lu, Kazuo Bessho, Takeshi Yoshimoto

論 文 調波有限要素法による磁気飽和を考慮 した 交流定常磁界解析

Four components three dimensional FEM analysis of flux concentration apparatus with four plate

T Yoshimoto, Sotoshi Yamada, Kazuo Bessho

This paper deals with the four component three dimensional FEM analysis of a flux concentration model with four thick conducting plates placed between a pair of a.c.-excited coils. We have already analyzed a flux concentration apparatus with two conducting plates by using …

A Finite Element Calculation Method of 3-D Eddy Current Diffusion Problem and its Application to a Flux Concentration Apparatus

Takeshi Yoshimoto, 外史 山田, Kazuo Bessho

High Speed Hybrid AC Motor

Kazuo Bessho, 外史 山田

Three-phase Uninterruptible Power Supply Using a Stand-by Inverter of a Single Phase

外史 山田, Kazuo Bessho, Kosuke HARADA

Three-phase UPS transformer using stand-by inverter of a single cores

Kazuo Bessho, Sotoshi Yamada, K. Harada

A new three-phase UPS transformer for an uninterruptible power supply (UPS) is described. Its configuration is a magnetic integration of a three-phase ferroresonant transformer and a single- to three-phase converter. The three-phase commercial source takes over a load on normal condition. The …

Introduction of a Base-Model for Eddy Current Testing of Printed Circuit Boards

Bayani Hossein, Masanobu Nishino, Sotoshi Yamada, M. Iwahara et autres