Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Characteristic of VSI Driven by Source Synchronous Type for the Utility Interactive using a Photovoltaic Generation for the LED Luminaire Emergency Exit Sign Operation

LED 비상 유도등 동작을 위한 태양광발전 계통연계 전원동기 방식의 전압형 인버터 구동 특성

  • Hwang, Lark-Hoon (Department of Electrical Engineering, Semyung University) ;
  • Na, Yong-Ju (Department of Electrical Engineering, Semyung University)
  • Received : 2018.09.27
  • Accepted : 2018.10.22
  • Published : 2018.10.31
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Abstract

In this paper, represented uninterruptible power supply (UPS) equipment maintaining constant output voltage, the proposes a photovoltaic system constructed with a step up boosting chopper and single phase pulse width modulation (PWM) voltage source inverter. as power source disconnection, voltage variation and output current variation with load variation. This system is driven by being synchronized voltage fed inverter and AC source, and in the steady state of power source charge battery connected to DC side with solar cell using a Photovoltaic that it was so called constant voltage charge. It can be results of saving electric power, and through a normal operation of energy storage system (ESS), the system operated the LED a calling on signal changes at the airport in an efficient manner. In addition, better output waveform was generated because of PWM method, and it was proved to test by experiment maintained constant output voltage regardless of AC source disconnection, load variation, and voltage variation of AC power source.

본 논문은 태양광 발전시스템을 승압쵸퍼와 단상 펄스폭변조 전압형인버터를 사용하여 전원차단 경우나 전압변동 및 부하변동에 의한 출력전류 변화에도 일정한 출력전압을 유지하는 무정전 전원 공급장치(UPS)를 구성하였다. 본 시스템은 전압형인버터를 교류전원과 동기 시켜서 운전하고 정상상태에서는 전원으로부터 운전하고 정상상태에서는 전원으로부터 직류 측에 연결된 축전지를 태양전지를 이용한 광기전력효과와 함께 일정전압을 충전하며, 전원의 차단, 전원의 전압변동 및 부하전류의 변화에도 일정한 전압을 유지하도록 하였다. 에너지 저장장치 (ESS; energy storage system)를 상시 운영하여 공항의 기상 변화에 따른 파장별 LED 항공 유도신호 등을 효율적으로 운용하는 시스템을 구성 하였고, 전력절감효과를 얻을 수 있는 에너지절약 전원복합형 전력변환장치로 구성되어 있다. 출력은 PWM방식에 의하여 양호한 파형이 되도록 하고 전원차단과 부하의 상태의 변화 및 전원 전압 변동에도 일정한 전압으로 출력됨을 실험을 통하여 확인 할 수 있었다.

Keywords

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