Title :
PWM rectifier with low DC voltage ripple for magnet supply
Author :
Ciscato, Doriano ; Malesani, Luigi ; Rossetto, Leopoldo ; Tenti, Paolo ; Basile, Gian Luigi ; Pasti, Matteo ; Voelker, Friedrich
Author_Institution :
Padova Univ., Italy
Abstract :
PWM (pulsewidth-modulated) bridge rectifiers with GTO switches are considered for application to particle acceleration magnet power supplies, where two-quadrant operation and extremely low DC current ripple are required. Different control strategies, with both preprogrammed and variable switching patterns, are examined and compared in view of optimization of the system performance. In particular, optimum digital PWM, multilevel delta modulation, and hybrid PWM/delta techniques are analyzed. The validity of the control methods is verified by simulation and experimental tests on a 60 kW prototype
Keywords :
bridge circuits; power supplies to apparatus; pulse width modulation; rectifiers; thyristor applications; 60 kW; GTO switches; PWM rectifier; bridge rectifiers; control strategies; hybrid PWM/delta techniques; low DC voltage ripple; magnet supply; multilevel delta modulation; optimum digital PWM; particle acceleration; preprogrammed switching strategies; two-quadrant operation; variable switching patterns; Bridge circuits; Linear particle accelerator; Low voltage; Magnetic switching; Magnetic variables control; Pulse width modulation; Pulsed power supplies; Rectifiers; Space vector pulse width modulation; Switches;
Journal_Title :
Industry Applications, IEEE Transactions on
