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http://dx.doi.org/10.7471/ikeee.2019.23.2.495

A Study on Harmonic Reduction of Single-phase UPS with Variable Passive Harmonic Filters  

Kim, Sung-Sam (Dept. of Smart Electricity, Korea Polytechnic Colleges)
Hwang, Seon-Hwan (Dept. of Electrical Engineering, Kyungnam University)
Publication Information
Journal of IKEEE / v.23, no.2, 2019 , pp. 495-501 More about this Journal
Abstract
This paper proposes a variable passive harmonic filter for reduction and improvement of harmonics and power factor of single-phase uninterruptible power supply(UPS) with full bridge rectifier. Recently, UPSs have excellent harmonic and power factor operation characteristics by applying 2-level or more levels of power conversion methods. On the other hand, the single-phase UPS of the full bridge rectifier seriously causes the third, fifth, and seventh harmonics, and the power factor reduction on the grid side. Therefore, we present a variable passive harmonic filter for eliminating (2n+1) order harmonics and improving the power factor generated by the full bridge rectifier operation. In order to evaluate the performance of the proposed variable harmonic filter, the its validity is verified by various simulations and experiments.
Keywords
Uninterruptible power supply; Total harmonic distortion; Variable passive harmonic filters; Power factor improvement; Harmonic reduction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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