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논문 기본 정보

자료유형
학술대회자료
저자정보
Y. Tang (Nanyang Technological University) W. Yao (Northwestern Polytechnic University) F. Blaabjerg (Aalborg University)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2015-ECCE Asia
발행연도
2015.6
수록면
2,227 - 2,234 (8page)

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In single-phase uninterruptible power supply (UPS) applications, it is well known that the AC side instantaneous power is not constant by nature. The resulting input current from the DC source side will inevitably contain low frequency ripple components that may largely deteriorate the system performance in terms of efficiency and reliability. In order to solve this issue, this paper presents a dual-mode operated boost inverter, which can simultaneously work in both Differential Mode (DM) and Common Mode (CM) operations. Its DM operation ensures regulated sinusoidal AC output voltage as well as active power conversion, while its CM operation is controlled in such a way that the low frequency ripple current on the DC side can be maintained in a minimum level. The proposed ripple current reduction method may not only work with linear loads, but also nonlinear loads, where more sophisticated controller design are required. Since the presented inverter essentially consists of two DC/DC boost converters, an interleaved Pulse-Width Modulation (PWM) can be adopted to further reduce the high frequency switching ripple current on the DC side. Both Simulation and experimental results are presented to demonstrate the effectiveness of input ripple current reduction.

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Abstract
I. INTRODUCTION
II. CIRCUIT ANALYSIS AND OPERATING PRINCIPLES
III. SYSTEM MODELING WITH THE DUAL-MODE OPERATION
IV. SYSTEM CONTROLLER DESIGN
V. SIMULATION RESULTS
VI. EXPERIMENTAL RESULTS
VII. CONCLUSIONS
REFERENCES

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