The highpower pulsed power supply system for the magnetic field of the HL-2ATokamak is described in this paper.The total output power of its eight magnetic field powersupply units of nearly 250 MW.Their highest DC output voltage and current are 3510 V and45 kA,respectively.All the units are operated in a pulsed mode.The pulse duration is 5 s,and the cyclic period is 15 min.The power supply system consists mainly of pulsed flywheelmotor generators,rectifying transformers,thyristor converters,diode rectifiers and switches.Thesystem incorporates many key technologies-supply equalization with two generators and four diodebridges,constant-angle phase triggers with a wide frequency range,current equalization,a statusdetector for the high current 6-phase converter,and advanced monitoring based on a programmablelogic computer and engineering parameter measurement.The experimental results show that theperformance of the power supply system satisfies the requirements of HL-2A experiments verywell.
展开▼
