Design of High-efficiency Soft-switching Converters for High-power Microwave Generation

다국어 초록 (Multilingual Abstract)

In this paper, the design of three types of power supplies for 30 kW and 60 kW industrial magnetron drives, high voltage power supply, filament power supply and magnet power supply, are studied. The high voltage power supply was designed based on series resonant converter discontinuous conduction mode (DCM) to take advantage of a clean current source that can cover the nonlinear characteristic of a magnetron, such as a zener diode. The maximum output specification of a high voltage power supply is 42.5 kW for a 30 kW industrial magnetron drive. This can also be used for a 60 kW magnetron with a parallel operation of two power supplies. The design considerations and feasibility tests of a resonant converter for an industrial magnetron are given. Additionally, the design of two auxiliary power supplies (a filament power supply: 15 V, 120 A and a magnet power supply: 75V, 5A) is also provided. These were designed based on the series resonant converter continuous conduction mode (CCM), above resonance operation for higher efficiency. Finally, the developed power supplies were tested using both a 30 kW magnetron and a 60kW magnetron. The results prove the design procedure and reliability of the proposed scheme.

참고문헌 (Reference)

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