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Open AccessArticle

Single-Phase Active Power Harmonics Filter by Op-Amp Circuits and Power Electronics Devices

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Department of Electronics Design (EKS), Mid Sweden University, Holmgatan 10, 85170 Sundsvall, Sweden
2
Department of Engineering, Atlas Danesh Co, Ghaemshahr 47658-37449, Iran
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Engineering Faculty, University of Mazandaran, Babolsar 47416-13534, Iran
4
C-MAST, University of Beira Interior, 6201-001 Covilhã, Portugal
5
Department of Electrical Engineering and Automation, Aalto University, 02150 Espoo, Finland
*
Authors to whom correspondence should be addressed.
Sustainability 2018, 10(12), 4406; https://doi.org/10.3390/su10124406
Received: 2 November 2018 / Revised: 19 November 2018 / Accepted: 23 November 2018 / Published: 26 November 2018
(This article belongs to the Special Issue Sustainable Energy Systems: From Primary to End-Use)
This paper introduces a new structure for single-phase Active Power Harmonics Filter (APHF) with the simple and low-cost controller to eliminate harmonics and its side effects on low voltage grid. The proposed APHF includes an accurate harmonic detector circuit, amplifier circuit to trap tiny harmonics, switching driver circuit for precise synchronization, and inverter to create injection current waveform, which is extracted from reference signal. The control circuits are based on electrostatic devices consist of Op-Amp circuits. Fast dynamic, simplicity, low cost, and small size are the main features of Op-Amp circuits that are used in the proposed topology. The aim is removing the all grid harmonic orders in which the proposed APF injects an appropriate current into the grid in parallel way. The proposed control system is smart enough to compensate all range of current harmonics. A prototype is implemented in the power electronics laboratory and it is installed as parallel on a distorted grid by the non-linear load (15 APeak-Peak) to verify the compensating of harmonics. The harmonics are compensated from THD% = 24.48 to THD% = 2.86 and the non-sinusoidal waveform is renovated to sinusoidal waveform by the proposed APHF. The experimental results show a good accurate and high-quality performance. View Full-Text
Keywords: active power harmonics filter; electrostatic devices; hysteresis switching; op-amp; power electronics active power harmonics filter; electrostatic devices; hysteresis switching; op-amp; power electronics
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MDPI and ACS Style

Samadaei, E.; Iranian, M.; Rezanejad, M.; Godina, R.; Pouresmaeil, E. Single-Phase Active Power Harmonics Filter by Op-Amp Circuits and Power Electronics Devices. Sustainability 2018, 10, 4406.

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