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Abstract
Today’s three-phase Adjustable Speed Drive (ASD) systems still employ Diode Rectifiers (DRs) and Silicon-Controlled Rectifiers (SCRs) as the front-end converters due to structural and control simplicity, small volume, low cost, and high reliability. However, the uncontrollable DRs and phase-controllable SCRs bring side-effects by injecting high harmonics to the grid, which will degrade the system performance in terms of lowering the overall efficiency and overheating the system if remain uncontrolled or unattenuated. For multiple ASD systems, certain harmonics in the entire system can be mitigated by phase-shifting the currents drawn by SCR-fed drives. In addition, optimizations of the firing angles and power levels further reduce the harmonic distortions. However, compromises between the harmonic distortion level and the resultant power factor are encountered in the optimization. To improve the power factor, passive capacitors can be installed, which yet can trigger the system resonance. Hence, this paper analyzes the resonant issues in multiple ASD systems with power factor correction capacitors. Potential damping solutions are summarized. Simulations are carried out, while laboratory tests on a two-drive system are provided to demonstrate the harmonic mitigation scheme in multiple ASD systems.
Original language | English |
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Title of host publication | Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE) |
Number of pages | 7 |
Place of Publication | USA |
Publisher | IEEE Press |
Publication date | Oct 2017 |
Pages | 3398-3404 |
ISBN (Print) | 978-1-5090-2997-6 |
DOIs | |
Publication status | Published - Oct 2017 |
Event | 2017 IEEE Energy Conversion Congress and Exposition (ECCE) - Cincinnati, Ohio, United States Duration: 1 Oct 2017 → 5 Oct 2017 |
Conference
Conference | 2017 IEEE Energy Conversion Congress and Exposition (ECCE) |
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Country/Territory | United States |
City | Cincinnati, Ohio |
Period | 01/10/2017 → 05/10/2017 |
Keywords
- Power quality
- Power factor correction (PFC)
- Resonance
- Harmonics
- Phase-shifted control
- Diode rectifiers
- Silicon-Controlled Rectifiers (SCR)
- Adjustable speed drives (ASDs)
Fingerprint
Dive into the research topics of 'Power Factor Correction Capacitors for Multiple Parallel Three-Phase ASD Systems: Analysis and Resonance Damping'. Together they form a unique fingerprint.Projects
- 2 Finished
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NHTD: New Harmonic Reduction Techniques for Motor Drives
Blaabjerg, F., Davari, P., Yang, Y. & Soltani, H.
The Danish National Advanced Technology Foundation
01/05/2014 → 30/11/2017
Project: Research
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HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems
Blaabjerg, F., Bak, C. L., Wang, X., Beres, R. N., Kwon, J., Gui, Y., Yoon, C. & Ebrahimzadeh, E.
01/02/2013 → 28/02/2018
Project: Research