Title :
Unity power factor high current slew rate magnet power supply
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
fDate :
9/1/1989 12:00:00 AM
Abstract :
The author presents an alternative design scheme which utilizes a conventional AC-to-DC n-pulse bridge and a DC-side commutation network. With the addition of a commutator, converter device latching current problems are overcome; a current slew rate can be preprogrammed within certain limitations; magnet current can be commutated safely in the event of a line voltage collapse; and the main converter can be designed to operate at rated load with a unity power factor. The major focus of the present work is to develop a simple analytical model of the converter commutator and magnet system suitable for design purposes. The model has been verified experimentally. Practical limitations of this circuit are described
Keywords :
electromagnets; power convertors; power factor; power supplies to apparatus; DC-side commutation network; analytical model; design; high current slew rate; latching current; line voltage collapse; magnet power supply; unity power factor; Bridge circuits; Plasma confinement; Power supplies; Pulsed power supplies; Reactive power; Switching converters; Thyristors; Toroidal magnetic fields; Voltage; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
