• 제목/요약/키워드: Pulsed power system

검색결과 208건 처리시간 0.037초

Pulsed-Power System for Leachate Treatment Applications

  • Jang, Sung-Roc;Ryoo, Hong-Je;Ok, Seung-Bok
    • Journal of Power Electronics
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    • 제11권4호
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    • pp.612-619
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    • 2011
  • This paper presents a water treatment system for leachate from sewage-filled ground that uses a pulsed-power modulator developed based on semiconductor switches in order to realize a long life, a high repetition rate, and a fast rising time. The specifications of the developed pulsed-power modulator are the pulsed output voltage, the output current, the pulse repetition rate (PRR), the pulse width, and an average output power of $60\;kV_{max}$, $300\;A_{max}$, 3000, $50\;{\mu}s$, and 15 kW, respectively. The pulsed-power water treatment system was introduced and analyzed using an equivalent electrical circuit model to optimize the output voltage waveform. The experimental results verify that the proposed water treatment system can be effectively used for industrial applications.

양극성 펄스 파워 모듈레이터의 파워셀 구동을 위한 게이트 드라이버 (Gate Driver for Power Cell Driving of Bipolar Pulsed Power Modulator)

  • 송승호;이승희;류홍제
    • 전력전자학회논문지
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    • 제25권2호
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    • pp.87-93
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    • 2020
  • This study proposes a gate driver that operates semiconductor switches in the bipolar pulsed power modulator. The proposed gate driver was designed to receive isolated power and synchronized signals through the gate transformer. The gate circuit has a separate delay in the on-and-off operation to prevent a short circuit between the top and bottom switches of each leg. On the basis of the proposed gate circuit, a bipolar pulsed power modulator prototype with a 2.5 kV/100 A rating was developed. Finally, the bipolar pulsed power modulator was tested under resistive load and plasma reactor load conditions. It is verified that the proposed gate driver can be applied to a bipolar pulsed power modulator.

빠른 상승 시간을 갖는 파워 셀 기반 펄스 파워 모듈레이터 (Power Cell-based Pulsed Power Modulator with Fast Rise Times)

  • 이승희;송승호;류홍제
    • 전력전자학회논문지
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    • 제26권1호
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    • pp.25-31
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    • 2021
  • This paper describes the design of a power cell-based pulsed power modulator with fast rise times. The pulse-generating section of the pulse power modulator is a series stack of power cells. Each power cell is composed of a storage capacitor, a pulse switch, and a bypass diode. When the pulse switches are turned on, the capacitors are connected in series and the sum of voltages is applied to the load. For output pulses with fast rise times, an IGBT with fast turn-on characteristics is adopted as a pulse switch and the optimized gate driving method is used. Pspice simulation is performed to account for the gate driving method. A 10 kV, 12-power cell-based pulsed power modulator is tested under resistive load and plasma reactor load. The rise times of output pulses less than 20 ns are confirmed, showing that the pulsed power modulator can be effectively applied to pulsed power applications with fast rise times.

Pulsed Power전원장치용 Gas Puffing INPIStron의 개발 (Development of Gas Puffing INPIStron for Pulsed Power Supply)

  • 서길수;김영배;조국희;이형호
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제49권12호
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    • pp.679-684
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    • 2000
  • Closing switch, key component of pulsed power system, is constructed simply and used frequently due to the easy control and manufacture of one. The kind of one are spark-gap, triggered vacuum switch, pseudo-spark switch and INPIStron. But the electrode of spark gap switch is damaged with the hot spot by Z-pinch and then the life of one become short. INPIStron with inverse pinch effect has long life but it is difficult trigger system to provide uniform discharge between cathode and anode. In this paper, the design and manufacturing of INPIStron with gas puffing trigger method in order to supply uniform discharge inter-electrode and the performance of the developed INPIStron applied to 500[kA]-2[MJ] pulsed power system is presented.

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유도형(誘導型) Pulsed Power 전원을 이용한 CO2 레이저 동작 특성에 관한 연구 (A Study on Operating Characteristics of the CO2 Laser with Inductively Pulsed Power System)

  • 김근용;민병대;김용철;이유수;정현주;김희제
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 하계학술대회 논문집 C
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    • pp.1710-1713
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    • 2002
  • Recently, the pulsed power system has been used to many applications. Such as remediation of environmental hazards, food sterilization, air pollution control E/P (Electrostatic Precipitator), DeNOx/DeSOx power system, ozone generator, high energy physics, and other power source applications. A pulse energy efficiency for load depends on the rising time, peak value. Pulse duration and impedance matching etc. The pulsed power system generally required for short pulse duration and high peak value was forced to consider its volume and economy. In this paper, we investigated operating characteristics of the CO2 laser using an inductively pulsed power system.

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고압 고주파 펄스 파워 시스템을 이용한 세균 제거 특성 (The Characteristics on the Removal of Bacteria Using High Voltage and High Frequency Pulsed Power System)

  • 심지영;김미정;박제욱;김희제
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2007년도 제38회 하계학술대회
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    • pp.1416-1417
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    • 2007
  • The high frequency pulsed power system is widely available for use in high frequency generator applications. We designed and fabricated our own high frequency pulsed power system to obtain very sort pulse width and high peak value and investigated microbe removal characteristics using it. This paper introduces a simple high voltage high frequency pulsed power system for removing various bacteria caused by dirty water. This system include power supply circuit, switching MOSFET, and flyback converter. We can also control the switching using a PIC one chip microprocessor. As a result, we can obtain good removing characteristics of various bacteria by adjusting the charging voltage, the pulse repetition rate and the electrical field inducing time.

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Blumlein 펄스파워 전원개발 및 방전특성 평가 (Evaluation of Discharge Characteristics Followed by the Development of Blumlein Pulsed Power Source)

  • 한상보;박상현
    • 조명전기설비학회논문지
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    • 제24권10호
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    • pp.99-105
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    • 2010
  • This paper discussed the theoretical simulation results for developing the blumlein pulsed power source and showed the circuit configuration and the discharge characteristics of the realistic manufactured pulsed power system. In the simulation, the output voltage characteristics at a load resistor showed the general impulse shape when the impedance of a single coaxial cable is matched with the that of a load resistor. In addition, it is confirmed that output values of the pulsed power can be easily controlled by the duplication of coaxial cables and the pulsed waveform showed the general impulse characteristics. Specifically, the inception discharge voltage in the gap distance of 5[mm] between needle and plane electrodes is about 20[kV] and which is lower than about 29[kV] in 9[mm] due to the difference of the reaching time of the inception voltage. Therefore, this paper showed that the output voltage of the blumlein pulsed power source can be easily controlled.

The Microbe Removing Characteristics Caused by Dirty Water Using a Simple Pulsed Power System

  • Kim, Hee-je;Song, Keun-ju;Song, Woo-Jung;Kim, Su-Weon;Park, Jin--Young;Joung, Jong-Han
    • KIEE International Transactions on Electrophysics and Applications
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    • 제4C권3호
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    • pp.91-95
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    • 2004
  • The pulsed power system is widely available for use in pulse generator applications. Generally, the pulse generator is required for very short pulse width and high peak value. We have designed and fabricated our own pulsed type power system and through its use, we investigated microbe removal characteristics. This paper introduces a simple pulsed power system for removing various microbes caused by dirty water. This system includes a 2 times power supply circuit, IR2110 operated by using a fixed voltage regulator 7812 and 7805, and the switching MOSFET (Metal Oxide Semiconductor Field Effect Transistor). We can also control this process by using a PIC one chip microprocessor. As a result, we can obtain good removing characteristics of various microbes by adjusting the charging voltage, the pulse repetition rate and the electrical field inducing time.

병렬 펄스 부하를 갖는 직류 전력시스템을 위한 Voltage Bus Conditioner의 전류 센서 없는 제어 (Current Sensorless Control of the Voltage Bus Conditioner for a DC Power System with Parallel Pulsed Power Loads)

  • 이병헌;장한솔;나재두;김영석
    • 전기학회논문지
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    • 제61권11호
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    • pp.1617-1624
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    • 2012
  • A DC power system has many loads with varied functions. Also, there may be large pulsed loads with short duty ratios which can affect the normal operation of other loads. In this paper, Voltage Bus Conditioner(VBC) without any current sensors is proposed to damp the bus voltage transients by parallel pulsed loads. The proposed control approach requires only one voltage sensor and carries out both the functions of damping the bus voltage transients and maintaining the level of energy stored. The proposed control technique has been implemented on a TMS320F2812 Digital Signal Processor(DSP). Simulated results by a Matlab Simulink and experimental results are presented which verify the control principles and demonstrate the practicalty of the approach.

에너지 반환회로를 갖는 비대칭 펄스형 DC 플라즈마 전원장치에 관한 연구 (A Study on Asymmetric Pulsed DC Plasma Power Supply with Energy Recovery Circuit)

  • 추대혁;유성환;김준석;한기준
    • 전력전자학회논문지
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    • 제18권6호
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    • pp.593-600
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    • 2013
  • The asymmetric pulsed DC reactive magnetron sputtering system is widely used for the high quality plasma sputtering process such as a thin film deposition. In asymmetric pulsed DC power supply a reverse voltage is applied to the target periodically to minimize arc discharging effect. When sputtering in the mid-frequency range (20-350 kHz), the periodic target voltage reversals suppress arc formation at the target and provide long-term process stability. Thus, high quality, defect-free coatings of these materials can now be deposited at competitive rates. In this paper, a new style asymmetric pulsed DC power supply including mid-transformer is presented. In the proposed, an energy recovery circuit is adopted to reduce the mutual inductance of the transformer. As a result, the system dynamics of the voltage control loop is increased highly and the non-linear voltage boosting effect of the conventional system is removed. This work was proved through simulation and laboratory based experimental study.