• Title, Summary, Keyword: HVPS

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

  • Park Young-Ju
    • Journal of Power Electronics
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    • v.5 no.4
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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.

Development of HVPS of the X-Band TWTA for Military Transportable Satellite Communications (군위성통신 차량용단말 X-대역 TWTA용 HVPS 개발)

  • Park, Jae-Don;Jang, Jeen-Sang;Dong, Moon-Ho
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.12A
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    • pp.1168-1173
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    • 2005
  • The HVPS of the TWTA for military satellite communications is developed and tested. With 380 V input DC voltage, the HVPS provides -10.95 kV for Cathode, -4.27 kV for Collectorl and -6.57 kV for Collector2 of the TWT that generates 600 W X-band output signal power. The total output power of the HVPS is about 1.6 kW. The voltage ripples of Cathode, Collectorl and Collector2 are 6 V, 12 V and 6 V, respectively, which are only $0.055\%,\;0.281\%$ and $0.091\%$ compared to the absolute output voltages.

Hardware configuration of High-Density HVPS and High Speed independent Control method Using FPGA for Phased Array Transmitters (위상 배열 고출력증폭기용 고밀도 고전압 전원공급기 하드웨어 구성 및 FPGA를 이용한 고속 독립 제어방식)

  • Kang, Chun-Ho;Lee, Sung-Wook;Lee, Hong-Hak;Lee, Chang-Hoon;Byun, Gi-Sig
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.19 no.11
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    • pp.2758-2764
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    • 2015
  • In the field of electronic warfare applications, high voltage power supply(HVPS) for high power phased array transmitters must necessarily have an independent operating characteristics for driving mini TWTs. TWT independent operational characteristics, in order to run without interrupting the electronic warfare mission by maintaining the partial transmission function even when one of the TWT has occurred a failure, is known to be very important. In this paper, we describe the research on high-speed independent control system using a high-density HVPS, including FE modulators, hardware configuration and the FPGA in order to independently operate mini TWTs. Also, we have simulated some possible faults in phased array transmitters, and presents the test results to control a faulted TWT independently.

Development of High Density High Voltage Power Supply for Traveling Wave Tubes (진행파관(TWT) 구동용 고밀도 고전압 전원공급기 개발)

  • Park Y.J;Lee K.S;Lyu S.C.
    • Proceedings of the KIPE Conference
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    • pp.256-259
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    • 2003
  • In this paper describes the development testing results of high density High Voltage Power Supply(HVPS) that employ microwave TWTs. The HVPS consist of number of modules connected in series. A new design that adapt resonant circuit and high density pulse transformer to the high voltage modules makes the HVPS much more reliable. Also High voltage Solid-State modulation using fast switching devices(FET's) and the test results of modulator modules development are represented.

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Gyro HV Power Supply Design for Attitude Control in the Satellite (위성 자세제어용 자이로 HVPS 설계)

  • Kim, Eui-Chan;Koo, Ja-Chun
    • Aerospace Engineering and Technology
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    • v.6 no.1
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    • pp.109-113
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    • 2007
  • In this paper, the design process of the High Voltage Power Supply for RLG(Ring Laser Gyroscope) is described. The specification for High Voltage Power Supply(HVPS) is proposed. Also, The analysis of Flyback converter topology is explained. The Design for the HVPS is composed of the inverter circuit, feedback control circuit, high frequency switching transformer design, and voltage doubler circuit.

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Implementation of Traveling Wave Tube Amplifier Maintenance System for the Microwave Surveillance Radar (마이크로파 탐색레이더 진행파관증폭기 정비시스템 구현)

  • Yoon, In-Chul;Kwon, Jong-Woon;Park, Yong-Man;Odgerel, Odgerel;Kim, Hie-Sik
    • Proceedings of the KIEE Conference
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    • pp.264-266
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    • 2006
  • This traveling wave tube amplifier maintenance system was developed for performance of microwave Surveillance radar traveling wave tube amplification parts, and field operation. The Maintenance system is traveling wave tube amplification part RF output waveform measurement and HVPS Voltage adjustment and a maintenance function are offer. The system was developed as an embedded system base it consisted of Linux os which applied a top-down design and visual technique. Therefore change and easy extension of a system. This paper discussed characteristic of maintenance equipment function, composition, and an employment program.

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Design and Fabrication of a High-Power Pulsed TWTA for Millimeter-Wave(Ka-Band) Multi-Mode Seeker (밀리미터파(Ka 밴드) 복합모드 탐색기용 고출력 펄스형 진행파관 증폭기(TWTA) 설계 및 제작)

  • Song, Sung-Chan;Kim, Sun-Ki;Lee, Sung-Wook;Min, Seong-Ki
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.30 no.4
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    • pp.307-313
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    • 2019
  • The traveling wave tube amplifier (TWTA), which can be applied to the Ka-band millimeter-wave multi-mode seeker, consists of an high voltage power supply(HVPS), a grid modulator, a command and control, and an RF assembly. We designed a power supply that generates a -17.9 kV high voltage by synchronizing the pulse repetition frequency(PRF) and power supply switching frequency(i.e. synchronization frequency), and a high-speed grid-switching modulator for RF pulse modulation. The TWTA, which is fabricated through miniaturization with a volume of 3.18 L, has high pulse switching characteristics of up to 18.5 ns. The maximum rise/fall time of the grid on/bias signal and peak power is more than 564.9 W. Moreover, an excellent spurious performance of -68.4 dBc or less was confirmed within the range of PRF and PRF/2.

The Gyro High Voltage Power Supply Design for Attitude Control in the Satellite (저궤도 위성 자세제어용 자이로 고전압 발생기 설계)

  • Kim, Eui-Chan;Lee, Heung-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.3
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    • pp.403-408
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    • 2008
  • The gyroscope is the sensor for detecting the rotation in inertial reference frame and constitute the navigation system together an accelerometer. As the inertial reference equipment for attitude determination and control in the satellite, the mechanical gyroscope has been used but it bring the disturbance for mass unbalance so the disturbance give a bad influence to the observation satellite mission because the mechanical gyroscope has the rotation parts. During the launch. The mechanical gyroscope is weak in vibration, shock and has the defect of narrow operating temperature range so it need the special design in integration. Recently the low orbit observation satellite for seeking the high pointing accuracy of image camera payload accept the FOG(Fiber Optic Gyro) or RLG(Ring Laser Gyro) for the attitude determination and control. The Ring Laser Gyro makes use of the Sanac effect within a resonant ring cavity of a He-Ne laser and has more accuracy than the other gyros. It need the 1000V DC to create the He-Ne plasma in discharge tube. In this paper, the design process of the High Voltage Power Supply for RLG(Ring Laser Gyroscope) is described. The specification for High Voltage Power Supply (HVPS) is proposed. Also, The analysis of flyback converter topology is explained. The Design for the HVPS is composed of the inverter circuit, feedback control circuit, high frequency switching transformer design and voltage doubler circuit.

The RLG's Power Supply Design for Attitude Control in the Satellite (저궤도 위성 자세제어용 센서 RLG 전원 공급기 설계)

  • Kim, Eui-Chan;Lee, Heung-Ho
    • Proceedings of the KIEE Conference
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    • pp.1488-1490
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    • 2008
  • The gyroscope is the sensor for detecting the rotation in inertial reference frame and constitute the navigation system together an accelerometer. As the inertial reference equipment for attitude determination and control in the satellite, the mechanical gyroscope has been used but it bring the disturbance for mass unbalance so the disturbance give a bad influence to the observation satellite mission because the mechanical gyroscope has the rotation parts. During the launch, The mechanical gyroscope is weak in vibration, shock and has the defect of narrow operating temperature range so it need the special design in integration. Recently the low orbit observation satellite for seeking the high pointing accuracy of image camera payload accept the FOG(Fiber Optic Gyro) or RLG(Ring Laser Gyro) for the attitude determination and control. The Ring Laser Gyro makes use of the Sanac effect within a resonant ring cavity of a He-Ne laser and has more accuracy than the other gyros. It need the 1000V DC to create the He-Ne plasma in discharge tube. In this paper, the design process of the High Voltage Power Supply for RLG(Ring Laser Gyroscope) is described. The specification for High Voltage Power Supply(HVPS) is proposed. Also, The analysis of flyback converter topology is explained. The Design for the HVPS is composed of the inverter circuit, feedback control circuit, high frequency switching transformer design and voltage doubler circuit.

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A development of high-frequency, high-voltage, pulse transformer for TWT high-power density HVPS (진행파관증폭기용 고밀도 고전압전원긍급기용 고주파수, 고전압, 펄스 변압기 변압기 개발)

  • Kim, S.C.;Kim, D.H.;Nam, S.H.
    • Proceedings of the KIEE Conference
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    • pp.1205-1207
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    • 2003
  • 고전압 전원공급기를 고 밀도로 제작하기 위하여 고 주파수 동작을 시켜야 한다. 이에 따라 전원 공급기에서 최대의 부피를 차지하는 부품인 변압기는 원하는 주파수에서 최소의 부피로 충분한 전력을 수강하면서 완벽한 펄스재현을 하여야 한다. 그리고 승압비를 일정수준으로 유지하여야 한다. 이러한 변압기의 설계 및 제작 시 주의하여야 한다. 진행파관 증폭기용 고밀도 고전압전원공급기용 고주파수, 고전압, 펄스 변압기 변압기를 설계, 제작 시험하였다. 변압기의 스윗칭 주파수는 80 kHz 이며 입력전압은 265 Vdc이고 출력전압은 4kVdc 이다. 변압기의 정상 출력은 1.7 kW이다. 그리고 최대부피는 $200\;cm^3$ 이하가 되어야 한다. 본 논문에서는 다양한 권선 방법에 의하여 제작된 변압기에 대하여 변압기의 설계 및 시험절차가 제시되었다. 그리고 변압기의 누설 인덕턴스, 분포 케페시턴스 및 공진 주파수도 측정하여 평가하였다.

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