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Prototype Development of Pulsed Power Supply for HT-6M Tokamak

The requirements of the toroidal field magnet coil in HT-6M Tokamak are that the peak value of output current is large and the pulse width is narrow, which is a typical pulse form. In order to meet the requirements, the scheme of capacitor energy storage pulsed power supply is designed. In the early stage, in order to verify the rationality of power supply design, a prototype of the 500-kJ capacitor energy storage pulsed power supply is developed. In this article, the transient processes of power supply are analyzed in detail by establishing a mathematical model. The power parameters are calculated according to output requirements, and the function relationships between the power input and output are obtained, and the theoretical analysis is proved by simplorer simulations. At the same time, the key devices of the power supply and short circuit protection are analyzed and designed, the prototype is developed, and the design requirements can be met by experiments.