Design and Development of a New Long-Pulse-Width Power Supply

Kangqiao Ma, Lifeng Zhang () and Tianwei Zhang
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Kangqiao Ma: China Institute of Atomic Energy, Beijing 102413, China
Lifeng Zhang: China Institute of Atomic Energy, Beijing 102413, China
Tianwei Zhang: China Institute of Atomic Energy, Beijing 102413, China

Energies, 2025, vol. 18, issue 12, 1-19

Abstract: In order to achieve a long-pulse-width output, a new long-pulse-width modulator based on the charging power supply of LCC-type high-frequency resonant converters and the pulse-generating unit in series IGBT switching technology has been designed. The relationship between the resonant cavity gain and the switching frequency has been derived. In the charging phase, the critical intermittent control mode is used to increase the charging speed, and in the voltage stabilization phase, the hysteresis burst control strategy is used to improve voltage accuracy. The simulation results show that the output pulse amplitude is 10 kV, the pulse width can reach 650 μs, and the top-drop is about 12%. Thus, a long pulse width modulator is developed. The output pulse voltage can reach 4 kV, and the output pulse width is 650 μs. The power supply reduces the capacity of the energy storage capacitor, which has industrial application value.

Keywords: solid-state pulse modulators; critical intermittent control; synchronous drive; burst hysteresis control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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