Title :
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
fDate :
Sept. 28 1991-Oct. 4 1991
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;
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
DOI :
10.1109/IAS.1991.178337
