Accuracy Considerations for Single-Phase Digital Derivative Based AC-Grid Synchronization Unit
2016 18th European Conference on Power Electronics and Applications (EPE '16 - ECCE Europe): Proceedings 2016
Iļja Galkins, Maksims Vorobjovs

Accurate grid synchronization unit is essential for reliable operation of grid converters. Single-phase unit may utilize measured function and its digital derivative as the base for PLL. This paper compares some solutions of accuracy problems typical for such derivative approach: oversampling of measurements, interleaved calculation of derivative and averaged evaluation pulse signals. The proposed methods are described and implemented with a low cost microcontroller. Resulting declinations of space vector and calculated phase angle are compared. It is concluded that all the described methods provide certain accuracy improvement, but measurements in interleaved series are the most accurate method. It is also concluded that the overall evaluation of these methods must include analysis of the hardware and software resources spent for their implementation that requires an extra work


Atslēgas vārdi
Phase locked loops, Synchronization, Pulse measurements, Software, Hardware, Detectors, Filtering
DOI
10.1109/EPE.2016.7695628
Hipersaite
http://ieeexplore.ieee.org/abstract/document/7695628/

Galkins, I., Vorobjovs, M. Accuracy Considerations for Single-Phase Digital Derivative Based AC-Grid Synchronization Unit. No: 2016 18th European Conference on Power Electronics and Applications (EPE '16 - ECCE Europe): Proceedings, Vācija, Karlsruhe, 5.-9. septembris, 2016. Piscataway: IEEE, 2016, 3475.-3480.lpp. ISBN 978-1-5090-1410-1. e-ISBN 978-9-0758-1524-5. Pieejams: doi:10.1109/EPE.2016.7695628

Publikācijas valoda
English (en)
RTU Zinātniskā bibliotēka.
E-pasts: uzzinas@rtu.lv; Tālr: +371 28399196