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자료유형
학술저널
저자정보
C. R. Rajesh (CSI Institute of Technology) S. P. Umayal (Muthayammal Engineering College)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.18 No.3
발행연도
2018.5
수록면
863 - 870 (8page)

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초록· 키워드

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The traditional power control theories for the harmonic reduction methods in multilevel inverters are found to be unreliable under unbalanced load conditions. The unreliability in harmonic mitigation is caused by voltage fluctuations, non-linear loads, the use of power switches, etc. In general, the harmonics are reduced by filters. However, such devices are an expensive way to provide a smooth and fast response to secure power systems during dynamic conditions. Hence, the Decoupled Double Synchronous Reference Frame (DDSRF) theory combined with a State Delay Controller (SDC) is proposed to achieve a harmonic reduction in power systems. The DDSRF produces a sinusoidal harmonic that is the opposite of the load harmonic. Then, it injects this harmonic into power systems, which reduces the effect of harmonics. The SDC is used to reduce the delay between the compensation time for power injection and the generation of a reference signal. The proposed technique has been simulated using MATLAB and its reliability has been verified experimentally under unbalanced conditions.

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Abstract
I. INTRODUCTION
II. RE-EXAMINATION OF THE INSTANTANEOUS POWER THEORY AND UNBALANCED CONDITIONS
III. DDSRF POWER THEORY
IV. EXPERIMENTAL RESULTS AND DISCUSSIONS
V. CONCLUSION
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