POLISH ACADEMY of SCIENCES
TECHNICAL SCIENCES
Varia
| BULLETIN
of the
POLISH ACADEMY of SCIENCES TECHNICAL SCIENCES |
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| Volume
57, Issue 2, June 2009
Varia |
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| Issue Index | Authors Index | Scope Index | Web Info | |
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| Aims&Scope, Subscription | Editors | Authors' guide | to read PDF files | mirror: http://fluid.ippt.gov.pl/~bulletin/ |
| pp 157 - 169 |
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A new scheme for power factor correction and active filtering for six-pulse converters loads |
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| Y. HAN, M. M. KHAN, L. XU, G. YAO, L. ZHOU, and C. CHEN |
| This paper presents a novel harmonic-free power factor correction (PFC) topology based on T-type active power filter (APF), which is dedicated for power factor improvement and harmonic filtering for six-pulse converter loads. The cascaded controller structure is adopted for the proposed system, namely, the inner current loop and outer voltage loop. The current-loop control scheme is based on a decoupled state-space equations of the T-type APF using separate proportional-integral (PI) controllers in d-axis and q-axis of the synchronous rotating reference frame (SRRF) synchronized with grid voltages, respectively. The fundamental components of load-side currents are feed forwarded in the current-loop using two groups of synchronous frame adaptive linear neural networks (ADALINEs) to ensure estimation accuracy and a fast dynamic response. A separate proportional-integral (PI) controller is adopted in the outer voltage loop for balancing the active power flow of the voltage source inverter (VSI) dc-side capacitor. The experimental results confirm well with the theoretical analysis. |
| Key words: |
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six-pulse converters, ADALINE, harmonic contamination, power factor correction, power quality |
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| Copyright
® Bulletin of the Polish Academy of Sciences: Technical Sciences
8 July 2009 |
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