Fundamental approaches to PWM control based GTO inverters for linear synchronous motor drives

Author

Tadakuma, Susumu ; Tanaka, Shigeru ; Miura, Kazutoshi ; Inokuchi, Haruhisa ; Ikeda, Haruo

Author_Institution

Toshiba Corp., Tokyo, Japan

fYear

1991

fDate

Sept. 28 1991-Oct. 4 1991

Firstpage

847

Abstract

High-speed magnetically levitated vehicles require large capacity power converters which supply three-phase sinusoidal current to the armature windings of the linear synchronous motor (LSM). A pulsed width modulated (PWM) inverter using GTOs as a switching device is a promising power converter. Multiplex PWM control has made it possible for inverters to be used for this purpose. A half bridge (HB) and full bridge (FB) are combined with an output transformer. A control procedure for reducing voltage harmonics and preventing magnetic saturation of output transformers is proposed. A case for neutral point clamped inverters is considered and compared with the HB/FB ones.<>

Keywords

bridge circuits; electric drives; harmonics; invertors; linear motors; magnetic levitation; railways; synchronous motors; thyristor applications; GTO inverters; PWM control; full bridge; half bridge; harmonics reduction; linear synchronous motor drives; magnetically levitated vehicles; multiplex PWM control; neutral point clamped inverters; output transformer; power converters; switching device; voltage harmonics; Bridge circuits; Circuit faults; Current supplies; Magnetic levitation; Power supplies; Pulse width modulation converters; Pulse width modulation inverters; Saturation magnetization; Synchronous motors; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE

Conference_Location

Dearborn, MI, USA

Print_ISBN

0-7803-0453-5

Type

conf

DOI

10.1109/IAS.1991.178337

Filename

178337