• 제목/요약/키워드: Static inverter

검색결과 159건 처리시간 0.029초

유럽형 전동차용 보조전원장치 개발 (Development of Static Inverter for European Electric Railway)

  • 김상균;김기훈;이현석;이경복;최종묵
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2003년도 추계학술대회 논문집(III)
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    • pp.634-639
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    • 2003
  • The static inverter is mainly used to provide with the electric power of various loads in the train. In the recent european projects, the specification of static inverter become harder, and many additional service function is expected. It takes long time and high cost to develope a static inverter with these high performances and additional function. But, these are became general demands for static inverter in the many projects from now on. The APSE(Auxiliary Power Supply Equipment) is a static inverter of high performance to satisfy the severe specification and various service function following these tendency for Athens project In this paper, the specification of APSE and various service functions are introduced to look about current tendencies of static inverter.

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전압원인버터방식 송전용 무효전력보상기의 제어시스템 설계 (Control System Design for Self-Commutated Static Var Compensator)

  • 한병문
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 1996년도 창립기념 전력전자학술발표회 논문집
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    • pp.89-92
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    • 1996
  • This paper describes a detailed simulation model of the static condenser (STATCON) to analyze the dynamic interaction with the ac transmission line. The static condenser was represented by a 12-pulse voltage-source inverter sharing an energy storage dc capacitor. The voltage-source inverter consists of two 6-pulse bridges modeled with ideal gate-turn-off switches. The control system for the static condenser was designed through a mathematical model deduced from the equivalent circuit. Simulation results show that the conceived model is very effective to analyze the dynamic interaction between the static condenser and the ac transmission system.

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Advanced Features of Static Inverter and Their Influence on Rail Infrastructure and Vehicle Maintenance

  • Bachmann, G.;Wimmer, D.
    • International Journal of Railway
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    • 제1권3호
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    • pp.94-98
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    • 2008
  • Static inverters are essential devices onboard of rolling stock. State-of-the-art static inverters have an impact on both rail infrastructure and vehicle maintenance due to their new topology with new features. The paper describes two important aspects as examples of new features available in state-of-the-art static inverters: active input current control and the effects on the rail infrastructure as well as the detection of the state of charge and the state of health of batteries to simplify vehicle maintenance.

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Static Equivalent Model of Inverter-based Distributed Energy Resource for Fault Analysis of Power Distribution Grid

  • Kim, Dong-Eok;Cho, Namhun;Yang, Seung-Kwon
    • KEPCO Journal on Electric Power and Energy
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    • 제2권4호
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    • pp.569-575
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    • 2016
  • In this paper, we propose a method to develop a static equivalent model of an inverter-based distributed energy resource (DER), where the model is used for a steady-state fault analysis of a power grid. First, we introduce the characteristics of an inverter-based DER as well as its general configuration. Then, we derive the equivalent model of the DER on the basis of the characteristics. Last, the performance of the proposed method is proven by the results of computer simulations.

STATIC AND DYNAMIC BEHAVIOR OF HIGH-CURRENT RECTIFIER DIODES IN RESISTANCE WELDING INVERTER POWER SOURCES

  • Mecke, Hubert;Doebbelin, Reinhard;Fischer, Wolfgang
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 1998년도 Proceedings ICPE 98 1998 International Conference on Power Electronics
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    • pp.1003-1007
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    • 1998
  • In recent years inverter power sources are more and more used for resistance welding processes. In this paper some results of investigation into the static and dynamic behavior of high-current rectifier diodes used in these inverter power sources will be discussed. By means of digital simulation, losses and efficiency have been determined depending on the power semiconductor parameters.

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정상상태오차 없는 UPS 인버터용 디지털 PID 전압 제어기 (Static-Error-Free Digital PID Voltage Regulator for UPS Inverter)

  • 김병진;최재호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 B
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    • pp.1227-1229
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    • 2000
  • The output voltage of UPS must not vary according to the load variation But the output voltage varies due to the load variation when a PI voltage regulator is used which has inherently a static state error. This paper presents a static-error-free digital PID voltage regulator for an UPS inverter to overcome additionally the voltage unbalance problem in three Phase system as well as the above problem.

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직류송전 인버터의 필터 최적설계를 위한 해석 및 목적함수의 선정 (Analysis of HVDC Inverter and Application of Objective Functions for the Optimal Filter Design)

  • 오성철;정교범
    • 전력전자학회논문지
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    • 제6권1호
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    • pp.82-89
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    • 2001
  • 본 논문은, HVDC 시스템의 인버터 제어기 및 고조파 필터의 설계를 위하여 동특성 및 정상상태 특성을 해석하는 방법을 제시한다. EMTP 시뮬레이션을 이용하면, 동특성 분석이 가능하며, 정상상태 특성의 분석은필터와 부하를 고려한 조류해석을 수행함으로써 가능하다. 또한 본 논문은 HVOC 시스템의 정적 및 동적 특성 분석이 가능한 단상 등가회로를 제안한다. 이 단상 등가회로에서 인버터는 스위치의 소호에 따른 전류원으로 취급된다. 또한 필터설계에 사용되고 있는 각종 목적함수를 단상 등가회로룹 이용하여 구할 수 있다, 본 논문은 전압의 고조파 성분 및 필터의 전력손실을 고려한 목적함수를 이용하여 펄터를 최적화하는 과정이 제시되어 있다.

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A New Scheme for Maintaining Balanced DC Voltages in Static Var Compensator(SVC) Using Cascade Multilevel Inverter

  • Min, Wan-Ki;Min, Joon-Ki;Choi, Jae-Ho
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2001년도 Proceedings ICPE 01 2001 International Conference on Power Electronics
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    • pp.561-565
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    • 2001
  • This paper proposes a new switching scheme of a static var compensator(SVC) with cascade multilevel inverter which employs H-bridge inverter(HBI). To improve the un­balanced problem of the DC capacitor voltages, the rotated switching scheme of fundamental frequency is newly used. The optimized fundamental switching pattern with low switching frequency is adapted to be suitable for high application. The selective harmonic elimination method(SHEM) allows to keep the total harmonic distortion(THD) low in the output voltage of multilevel inverter. The SVC system is modeled using the d-q transform which calculates the instantaneous reactive power. This model is used to design a controller and analyze the SVC system. Simulated and experimental results are also presented and discussed to validate the proposed schemes.

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직렬형 멀티레벨 인버터를 사용한 무효전력보상장치의 직류전압평형을 위한 새로운 제어기법 (A New Control Scheme for Maintaining Balanced DC Voltages in Static Var Compensator(SVC) Using Cascade Multilevel Inverter)

  • 민완기;민준기;최재호
    • 전기학회논문지P
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    • 제54권4호
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    • pp.179-184
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    • 2005
  • This paper examines the application of high voltage static var compensator(SVC) with cascade multilevel inverter which employs H-bridge inverter(HBI). A new switching scheme is developed for the SVC system. To improve the unbalanced problem of the DC capacitor voltages, the rotated switching scheme of fundamental frequency is newly used. The optimized fundamental switching pattern with low switching frequency is adapted to be suitable for high application. The selective harmonic elimination method(SHEM) allows to keep the total harmonic distortion(THD) low in the output voltage of multilevel inverter. The SVC system is modeled using the d-q transform which calculates the instantaneous reactive power. This model is used to design a controller and analyze the SVC system. Simulated and experimental results are also presented and discussed to validate the proposed schemes.

멀티레벨 직렬 전압형 인버터를 이용한 무효전력보상기(SVC)의 제어 (Control of Static Var Compensator Using A Cascade Typed Multilevel Voltage Source Inverter)

  • 민완기;박용배;김영한;최재호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1996년도 추계학술대회 논문집 학회본부
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    • pp.332-335
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    • 1996
  • Multilevel voltage source inverters are emerging as a new breed of power inverter options for high power applications. This paper presents a cascade typed multilevel voltage source inverter which has separate de sources for high voltage. This inverter is proposed for flexible ac transmission systems (FACTS) including static var compensator(SVC), series compensation and phase shifting. It can solve the problems of conventional transformer-based multipulse inverters and the problems of multilevel diode-clamped inverters. To show the superiority of multilevel cascaded inverter, simulation results are discussed in detail.

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