• 제목/요약/키워드: PCS: Power Conditioning System

검색결과 195건 처리시간 0.026초

고주파링크 전력계통 연계형 PCS (High Frequency Link PCS for Interfacing with Power Utility System)

  • 정봉근;윤광호;이광호;김은수;차인수
    • 전력전자학회논문지
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    • 제15권1호
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    • pp.60-68
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    • 2010
  • 최근 PCS(Power Conditioning System)는 고효율, 고 전력밀도 및 고 기능화를 통해 고집적화 추세에 있다. 이러한 요구를 만족시키기 위해 LLC 공진인버터와 LF 사이클로 컨버터로 구성된 회로를 제안했다. 동작분석 및 1kW 시제품을 제작하여 110Vac, 60Hz 전원계통연계실험 통해 적용 가능함을 보였으며 이에 대한 실험결과를 서술하였다.

High-Efficiency Power Conditioning System for Grid-Connected Photovoltaic Modules

  • Choi, Woo-Young;Choi, Jae-Yeon
    • Journal of Power Electronics
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    • 제11권4호
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    • pp.561-567
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    • 2011
  • This paper presents a high-efficiency power conditioning system (PCS) for grid-connected photovoltaic (PV) modules. The proposed PCS consists of a step-up DC-DC converter and a single-phase DC-AC inverter for the grid-connected PV modules. A soft-switching step-up DC-DC converter is proposed to generate a high DC-link voltage from the low PV module voltage with a high-efficiency. A DC-link voltage controller is presented for constant DC-link voltage regulation. A half-bridge inverter is used for the single-phase DC-AC inverter for grid connection. A grid current controller is suggested to supply PV electrical power to the power grid with a unity power factor. Experimental results are obtained from a 180 W grid-connected PV module system using the proposed PCS. The proposed PCS achieves a high power efficiency of 93.0 % with an unity power factor for a 60 Hz / 120 Vrms AC power grid.

정전류·정전압 기능의 1kW급 하이브리드 PCS 설계 (Design of 1kW Hybrid CC/CV PCS)

  • 이재민
    • 디지털콘텐츠학회 논문지
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    • 제14권4호
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    • pp.529-536
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    • 2013
  • 태양광 풍력 하이브리드(Hybrid) 발전 시스템에서는 발전의 주 인자인 태양의 일조량과 바람의 세기 등이 환경적 요인으로 적절하지 못할 경우 충방전 성능의 한계를 가지고 있는 에너지 저장장치인 배터리를 충전하는데 어려움이 발생한다. PCS(power conditioning system)는 태양광 풍력 발전 시스템 운용에 필수적인데 기존의 대부분의 PCS는 중대형 중심이어서 소형 발전에 적합하지 않아 효율이 높고 안정적인 동작을 하는 소형 발전용 PCS 개발이 절실히 요구된다. 본 논문에서는 이러한 문제들을 해결하면서 상용(한전)전력과의 계통연계 및 독립 운영이 가능하고 배터리의 장수명화와 안정화가 가능한 1kW급 하이브리드 CC/CV(constant current/constant voltage)기능을 갖는 PCS를 설계하고 시제품으로 구현하여 그 성능을 검증한다.

마이크로그리드용 10[kW] PCS 개발 및 성능시험 (The Development & Performance Test of 10[kW] Power Conditioning System for Microgrid)

  • 이학주;채우규;박중성;김주용;김찬영
    • 조명전기설비학회논문지
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    • 제25권7호
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    • pp.55-62
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    • 2011
  • PCS(Power Conditioning System) is the necessary component in Microgrid, composed of multiple distributed generators and energy storage system. In this paper, the functions of PCS are defined and 10[kW] PCS for PV and BESS are developed. To apply PCSs to Microgrid, this paper presents a 3-phase inverter with the decoupling current controller, voltage controller and DPLL control system. PCSs were applied to 120[kW] pilot plant and its performance tests were carried out. Test results of PCS at each operation mode show stable in Microgrid.

대용량 연료전지 발전시스템용 전력변환기 개발 (Development of Power Conditioning System for High Power Fuel Cell System)

  • 강호현;이진희;백승택;정홍주;정준모;서인영
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2007년도 춘계학술대회
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    • pp.153-156
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    • 2007
  • This paper presents the design, development and performance of a power conditioning system (PCS) for application to a 250kW Molten Carbonate Fuel Cell (MCFC) generation system. A DSP controller was used to control the dc-dc and dc-ac converter operation for grid connection and power injection to the grid. The controller must also supervise the total PCS operation while communicating with the fuel cell system controller. A control method for parallel operation of dc-dc converters was proposed and verified. A 250kW prototype was successfully built and tested. Experimental performances are compared to minimum target requirements of the PCS for MCFC.

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MW급 PCS 성능검증용 배터리 모의장치 개발 (Development of Battery Simulator for Performance Verification of MW-class PCS)

  • 이종학;인동석;허남억;박영민;박기원;권병기
    • 전력전자학회논문지
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    • 제21권2호
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    • pp.160-167
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    • 2016
  • An energy storage system (ESS) is applied to increase the energy efficiency of large plants or buildings that consume much energy, to improve the power quality of power systems, and to stabilize renewable energy source such as photovoltaic or wind turbine. The ESS is composed of a power conditioning system (PCS) and an energy storage. The battery is used as the energy storage. The battery is needed to design and verify a hardware and control system of PCS. Usually, a battery simulator is used instead of a battery, which is costly and hard to manage. In this paper, the development of the battery simulator for performance verification of the MW-class PCS is described. The battery simulator simulates the charging and discharging characteristics of batteries to design and verify the hardware and control system of PCS.

가정용 연료전지시스템 계통연계형 전력변환장치의 보호기능 성능평가에 관한 연구 (A Study on the Protective Function Performance Evaluation of Grid-Connected Power Conditioning System for Residential Fuel Cell System)

  • 이정운;서원석;김영규
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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    • pp.341-344
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    • 2009
  • In this paper, protective function evaluation was conducted to determine the performance and safety of a power conditioning system(PCS) for 1kW residential fuel cell system. It is essential to have a power quality, grid-connection and safety of PCS. Even though it is under 500ms by KGS-A410 standard, it is shown a rapid response time of 25ms from input under-voltage test. In terms of output over/under-voltage test, it is shown 29.15 and 79.4ms. Especially using anti-islanding test, it is shown all times under 100ms for combination cases of real and reactive power. We confirmed a rapid response characteristics and safety of PCS. The results of this evaluation are being used to develop a new test protocols of PCS.

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대용량 연료전지 시스템의 병렬운전을 위한 전력변환기 제어 알고리즘 개발 (Development of Power Conditioning System Control Algorithm for the Parallel Operation of High-Power Fuel Cell System)

  • 이진희;백승택;최준영;서인영;김도형;임희천
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2008년도 춘계학술대회 논문집
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    • pp.65-68
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    • 2008
  • This paper proposes the parallel operation control algorithm of a power conditioning system (PCS) for a distributed Fuel Cell power generation system. A proposed control algorithm is made good a drawback of the conventional control algorithm. The controller must also supervise the total PCS operation while communicating with the fuel cell system controller. Simulation results are presented to performance of a proposed control algorithm for the PCS.

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A Study of Islanding Detection of Grid-connected Three-phase Photovoltaic Power Conditioning System

  • Jung Y.S.;Yu G.J.;Choi J.Y.;Choi J.H.
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2003년도 춘계전력전자학술대회 논문집(2)
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    • pp.761-764
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    • 2003
  • Islanding phenomenon of a grid-connected photovoltaic (PV) power conditioning system (PCS) is said to occur if the PCS continues to power a section of the utility system after that section has been disconnected from the utility source. Since islanding creates hazards for personnel and equipment, PCSs are required to detect and prevent Et. In this paper, several islanding detection methods (IDMs) and reactive power variation method are described. Islanding test results for 9kW PCS are presented for verification.

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250kW급 MCFC용 전력변환기 개발 및 성능평가 (Performance Evaluation and Development of the Power Conditioning System for 250kW Molten Carbonate Fuel Cell)

  • 이진희;손의권;서인영
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2010년도 추계학술대회
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    • pp.261-262
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    • 2010
  • This paper presents the design, development and performance of a power conditioning system (PCS) for application to a Molten Carbonate Fuel Cell (MCFC) for high power generation system. The controller must also supervise the total PCS operation while communicating with the fuel cell system controller. A control method for parallel operation of 250kW PCS was implemented and verified respectively. Experimental performances are compared to minimum target requirements of the PCS for MCFC respectively.

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