Voltage Rating Reduction of Magnet Power Supplies Using a Magnetic Energy Recovery Switch

Author

Isobe, Takanori ; Takaku, Taku ; Munakata, Takeshi ; Tsutsui, Hiroaki ; Tsuji-Iio, Shunji ; Shimada, Ryuichi

Author_Institution

Res. Lab. for Nucl. Reactors, Tokyo Inst. of Technol.

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

1646

Lastpage

1649

Abstract

A new concept of magnet power supplies that can reduce voltage ratings of the power supplies is proposed. Circuit diagram and operation principles of magnetic energy recovery switch (MERS) are described. MERS consists of a capacitor and four semi-conductor devices such as MOSFETs and IGBTs. It is connected in series to a power supply and a coil. MERS is a switch module and it has no power supply in itself. Because MERS generates a voltage required for the inductance of the coil, the power supply only has to supply a voltage required for the resistance of the coil. Therefore, using MERS can reduce voltage rating and capacity of the power supply. Two types of power supply using MERS and voltage rating reduction are discussed. Comparatively small power supplies for high-repetition pulsed magnets and alternating magnetic field coils can be designed. Some experiments were carried out and confirmed that MERS can reduce voltage ratings of power supplies

Keywords

capacitors; coils; power semiconductor switches; pulsed power supplies; IGBT; MOSFET; alternating magnetic field coil; capacitor; magnet power supply; magnetic energy recovery switch; pulsed magnet; semiconductor device; voltage rating reduction; Capacitors; Coils; MOSFETs; Magnetic circuits; Magnetic switching; Power supplies; Pulsed power supplies; Switches; Switching circuits; Voltage; Magnet power supply; pulsed magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2006.870491

Filename

1643175