• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 추계학술대회 논문집 학회본부
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• pp.413-415
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• 1997

The solar cell has an optimum operating point to be able to get maximum power. To obtain maximum power from Photovoltaic array, potovolt aic power syste usually requres maximum power point tracking controller. The output characteristics of solar cell are nonlinear, and these characteristics vary with load solar insolation, solar cell temperature. Therefore the tracking control of maximum power point is the complicated problem. This paper presents power characteristics of residential Photovoltaic system applying a quck-boost conversion system.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 1999년도 학술대회논문집-국제 전기방전 및 플라즈마 심포지엄 Proceedings of 1999 KIIEE Annual Conference-International Symposium of Electrical Discharge and Plasma
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• pp.290-295
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• 1999

This paper describes Trans-less type utility interactive system that is combined with buck/boost chopper applying partial resonant method, which remove Trans, and high efficient PWM inverter. Therefore, it is possible to make it lightweight, to cut down the cost, and to improve its reliability. What the merits of this system are that we con transmit arbitrary power to load and utility regardless of generating voltage magnitude and we can always obtain high factor controlling by equal phase signal with utility.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1998년도 Proceedings ICPE 98 1998 International Conference on Power Electronics
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• pp.978-981
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• 1998

This paper presents a newly developed transformer-less single phase inverter for a photovoltaic (PV) power system. In the proposed system, there is no earth-leakage current at all in the theoretical base, and the main circuit of this system is rather simple and it is expected the higher efficiency will be realized. The system is operated by a digital signal processor (DSP) which makes it more flexible in the control. From the experimental results, it is found that this new inverter supplies the AC power to utility grid line with the power factor of nearly unity.

• 조명전기설비학회논문지
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• 제14권4호
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• pp.16-22
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• 2000

본 논문은 트렌스포머를 제거하고 부분공짚 스위칭 기법올 적용한 승.강압초퍼와 고효율의 PWM 인버터를 결합한 트렌스포머리스형 계통연계 시스템을 구성하게 되므로 소형경량화가 가능하며, 비용저지감과 신뢰성 향상을 도모할 수 있다. 이러한 시스템의 장점으로서는 태양잔지의 발전전압의 크기에 관계없이 임의의 전력올 부하와 계통에 송전할 수 있으며, 계통과 동상의 신호로 제어함으로서 상 고역률올 얻을 수 있다.