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- W2570126824 abstract "Abstract This study presents the design and principle of a current-pulsed power supply (CPPS) for the tearing mode (TM) feedback control of the J-TEXT tokamak. CPPS is a new method of stabilizing large magnetic islands and accelerating mode rotation through the use of modulated magnetic perturbation. In this application, continuous magnetic perturbation pulse trains with frequency of 1 kHz to kHz, amplitude of 0.25 G, and duty ratio of 20%–50% are required generating via in-vessel magnetic coils. A modified topology based on buck chopper is raised to satisfy the demands of inductive load. This modified topology is characterized by high frequency, rapid rising and falling edges, and large amplitude of current pulses. Appropriate RCD snubber circuit is applied to protect the Insulated Gate Bipolar Transistor (IGBT) switch device. Equipment with peak current that reaches 1 kA, frequency that ranges from 1 kHz to 3 kHz, and rising and falling time within 100 μs was constructed and applied to physical experiment." @default.
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- W2570126824 date "2017-02-01" @default.
- W2570126824 modified "2023-10-11" @default.
- W2570126824 title "A current-pulsed power supply with rapid rising and falling edges for magnetic perturbation coils on the J-TEXT tokamak" @default.
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- W2570126824 doi "https://doi.org/10.1016/j.fusengdes.2016.12.036" @default.
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