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논문 기본 정보

자료유형
학술대회자료
저자정보
Jun-ichi Itoh (Nagaoka University of Technology) Satoshi Nakamura (Nagaoka University of Technology) Satoshi Nagai (Nagaoka University of Technology) Hiroki Watanabe (Nagaoka University of Technology)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2019-ECCE Asia
발행연도
2019.5
수록면
746 - 753 (8page)

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초록· 키워드

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This paper proposes a Fault Ride-Through (FRT) operation for a single-phase grid-tied inverter with an active power decoupling capability. The power decoupling circuit achieves the double-line-frequency power pulsation compensation with a small capacitance; consequently, a transient response with a sudden load change becomes worsen because a large energy buffer, i.e. bulky electrolytic capacitors, does not apply. In particular, high overshoot voltages occur in a DC-link voltage when the grid voltage sag of the single-phase grid occurs, resulting in the interrupt of the FRT operation due to the over voltage protection. In order to solve this problem, the buffer capacitance is designed in the consideration of the overshoot amount of the DC-link voltage. The theoretical value of the overshoot amount is verified with a 1-kW prototype. As an experimental result, The error between the experimental and the calculation value is within 10%. Furthermore, the proposed control achieved both the FRT operation and the active power decoupling capability.

목차

Abstract
I. INTRODUCTION
II. CIRCUIT CONFIGURATION AND ACTIVE POWER DECOUPLING METHOD
III. CONTROL METHOD AND CHALLENGES OF FRT OPERATION
IV. CONSIDERATION OF DC-LINK VOLTAGE OVERSHOOT AT VOLTAGE SAG
V. EXPERIMENTAL RESULT
VI. CONCLUSION
REFERENCES

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