• 제목/요약/키워드: Microwave power supply

검색결과 49건 처리시간 0.033초

HVC-고주파변압기 내장형 펄스전원장치를 이용한 Microwave Oven의 효율 향상 (Efficiency Improvement of Microwave Oven Using a Pulse Power Supply Embedded HVC-High Frequency Transformer)

  • 정병환;조준석;강병희;목형수;최규하
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제53권3호
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    • pp.180-187
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    • 2004
  • A conventional power supply of a microwave oven has a 60Hz transformer and high voltage capacitor(HVC). Though it is very simple and has low cost, it has several problems such as large size, heavy weight and low efficiency To improve these problems, various high frequency inverter type power supply have been investigated and developed in recent years. But these cost is higher than the conventional one due to additional control circuit, fast switching devces. In this paper, a novel pulse power supply for microwave oven using high frequency transformer embedded HVC(High Voltage Capacitor) is proposed for down-sizing, cost reduction and efficient improvement. To verify the effectiveness of the proposed transformer, an equivalent circuit of transformer embedded HVC is derived and it's characteristic is described. And the validity of the proposed pulse power supply embedded HVC-high frequency transformer is shown by simulations and experiments accroding to various operating conditions.

대용량 마이크로 웨이브 전원 시스템 (Power Supply system of Large Capacity Microwave)

  • 유효열;심은용;서태원
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2010년도 하계학술대회 논문집
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    • pp.281-282
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    • 2010
  • The microwave power supply is mainly composed of the cathode power supply supplying the beam voltage and beam current of the gyrotron and body power supply for the single depressed collector (SDC) operation, which requires the cathode voltage/current of 80 kV/24 A for the cathode and +24 kV for the body. This paper is describing the power supply system for the gyrotron of KSTAR.

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HVC 내장형 고주파변압기를 이용한 Microwave Oven용 펄스전원장치에 관한 연구 (A Study on Pulse Power Suppuy for Microwave Oven Using HVC Embedded High Frequency Transformer)

  • 박강희;조준석;정병환;목형수;박현빈
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2001년도 전력전자학술대회 논문집
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    • pp.584-588
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    • 2001
  • A conventional power supply to drive a microwave oven has ferro-resonant transformer and high voltage Capacitor(HVC). Though it is simple, transformer is bulky, heavy and has low-efficiency. To improve this defect a high frequency inverter type power supply has been investigated and developed in recent years. But, because of additional control circuit and switching device, inverter-type power supply is more expensive than conventional one. In this study, A new pulse power supply for Microwave Oven using novel HVC embedded high frequency transformer is proposed for down-sizing, cost reduction, and efficiency emprovement of Inverter type power supply. Also, equivalent circuit model is derived by impedance measurements. And the operation of proposed pulse power supply is verified by simulations and experimental results.

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Current Source ZCS PFM DC-DC Converter for Magnetron Power Supply

  • Kwon, Soon-Kurl
    • 조명전기설비학회논문지
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    • 제23권7호
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    • pp.20-28
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    • 2009
  • This paper presents the design of zero current switching ZCS pulse frequency modulation type DC-DC converter for magnetron power supply. A magnetron serving as the microwave source in a microwave oven is driven by a switch mode power supply (SMPS). SMPSs have the advantages of improved efficiency, reduced size and weight, regulation and the ability to operate directly from the converter DC bus. The demands of the load system and the design of the power supply required to produce constant power at 4[kV]. A magnetron power supply requires the ability to limit the load current under short circuit conditions. The current source series resonant converter is a circuit configuration which can achieve this. The main features of the proposed converter are an inherent protection against a short circuit at the output, a high voltage gain and zero current switching over a large range of output power. These characteristics make it a viable choice for the implementation of a high voltage magnetron power supply.

Inverter 구동 Microwave Oven용 HVC 내장형 고주파변압기의 해석 및 설계에 관한 연구 (A Study on Analysis and Design of HVC Embedded High Frequency Transformer for Microwave Oven)

  • 박강희;조준석;목형수;최규하
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2001년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.293-296
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    • 2001
  • A conventional power supply to drive a microwave oven has ferro-resonant transformer and high voltage capacitor(HVC). Though it is simple, transformer is bulky, heavy and has low-efficiency. To improve this defect, a high frequency inverter type power supply has been investigated and developed in recent years. But, because of additional control circuit and switching device, inverter-type power supply is more expensive than conventional one. In this study, The design procedure of a novel HVC embedded high frequency transformer is proposed for down-sizing and cost reduction of Inverter-type power supply. Also, equivalent circuit mode] is derived by FEM analysis and impedance measurements. And the operation of proposed HVC embedded transformer is verified by simulations and experimental results.

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A Study on Novel Power Supply for Microwave Oven Using HVC Embedded High Frequency Transformer

  • Cho Jun-Seok;Park Kang-Hee;Jeong Byung-Hwan;Mok Hyung-Soo
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2001년도 Proceedings ICPE 01 2001 International Conference on Power Electronics
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    • pp.581-585
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    • 2001
  • This paper describes novel high voltage capacitor(HVC) embedded high frequency transformer and novel inverter power supply topology for driving magnetron in microwave oven. This transformer is used to achieve down­sizing, low-cost and efficiency improvement. Proposed transformer has HVC in its secondary winding. Therefore, this transformer does not need external high voltage capacitor which used in conventional power supply. As use of this transformer, output voltage is shifted from ground to above 2000[V] and efficiency of microwave oven can be improved. The weight of proposed transformer is about one sixth of conventional one and efficiency is improved by seven percent compared to the efficiency of the conventional system.

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Microwave Oven용 커패시터 내장형 고주파변압기의 해석 및 설계에 관한 연구 (A Study on Analysis and Design of HVC Embedded High Frequency Transformer for Microwave Oven)

  • 박강희
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2000년도 전력전자학술대회 논문집
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    • pp.90-94
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    • 2000
  • A conventional power supply to drive a microwave oven has ferro-resonant transformer and high voltage capacitor(HVC). Though it is simple transformer is bulky heavy and has low-efficiency. To improve this defect a high frequency switching inverter-type power supply has been investigated an developed. in recent years. But because of it's additional circuit and devices inverter-type power supply is more expensive than conventional one. In this paper The design procedure of a novel HVC embedded high frequency transformer is proposed for down-sizing and cost reduction. Also transformer equivalent circuit model is derived by FEM analysis and parameter measurements. And the operation of proposed HVC embedded transformer is verified by simulation and experimental results.

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A 2.4 GHz-Band 100 W GaN-HEMT High-Efficiency Power Amplifier for Microwave Heating

  • Nakatani, Keigo;Ishizaki, Toshio
    • Journal of electromagnetic engineering and science
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    • 제15권2호
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    • pp.82-88
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    • 2015
  • The magnetron, a vacuum tube, is currently the usual high-power microwave power source used for microwave heating. However, the oscillating frequency and output power are unstable and noisy due to the low quality of the high-voltage power supply and low Q of the oscillation circuit. A heating system with enhanced reliability and the capability for control of chemical reactions is desired, because microwave absorption efficiency differs greatly depending on the object being heated. Recent studies on microwave high-efficiency power amplifiers have used harmonic processing techniques, such as class-F and inverse class-F. The present study describes a high-efficiency 100 W GaN-HEMT amplifier that uses a harmonic processing technique that shapes the current and voltage waveforms to improve efficiency. The fabricated GaN power amplifier obtained an output power of 50.4 dBm, a drain efficiency of 72.9%, and a power added efficiency (PAE) of 64.0% at 2.45 GHz for continuous wave operation. A prototype microwave heating system was also developed using this GaN power amplifier. Microwaves totaling 400 W are fed from patch antennas mounted on the top and bottom of the microwave chamber. Preliminary heating experiments with this system have just been initiated.

Development of Airborne High Density High Voltage Power Supply for Traveling Wave Tubes

  • Park Young-Ju
    • Journal of Power Electronics
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    • 제5권4호
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    • pp.257-263
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    • 2005
  • This paper describes the development and testing results of a high density High Voltage Power Supply (HVPS) that drives microwave Traveling Wave Tubes (TWTs) of phased array transmitters for airborne EW systems. The HVPS is designed to consist of a number of modules connected in series. Among them, especially, the high-density pulse transformer module including the resonant circuit is newly designed to make the HVPS much more reliable. In addition, this paper describes the development of high voltage solid-state modulation using fast switching devices (FETs) and also represents the test results of a modulator module.

Microwave Oven용 마그네트론의 전력제어에 관한 연구 (A Study on the rower Control of Magnetron for Microwave Oven)

  • 김윤식;김종수;이성근
    • Journal of Advanced Marine Engineering and Technology
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    • 제28권7호
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    • pp.1172-1177
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    • 2004
  • This paper describes a output power control of magnetron for microwave oven. Magnetron is used extensively in household microwave oven and industrial microwave heating devices it is operated by 3000[V]~5000[V] dc high voltage. Power supply for driving magnetron is consisted of a bridge rectifier. HB(half bridge) inverter, full wave rectifier and gate drive circuit. In proposed system. we confirm that line input power can be controlled extensively and linearly to 24.56[%] by change of duty ratio of inverter through a experiment.