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Comparison of FPGA based control strategies (DDSRF-PI vs. State-Space Control) for grid connected inverters under grid disturbances

: Mittwede, E.; Kern, J.; Schönberger, S.; Stickan, B.

Fulltext urn:nbn:de:0011-n-4775056 (1.1 MByte PDF)
MD5 Fingerprint: a92d6a73fda6551c04c74947433fff94
Created on: 2.2.2018

MESAGO PCIM GmbH, Stuttgart:
PCIM Europe 2017, International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. Proceedings : Nuremberg, 16 - 18 May 2017
Berlin: VDE Verlag, 2017
ISBN: 978-3-8007-4424-4
PCIM Europe <2017, Nuremberg>
Conference Paper, Electronic Publication
Fraunhofer ISE ()
Elektrisches Energiesystem; Energiesystemtechnik; Leistungselektronik; power electronic converter; disturbance; FPGA

Measurement results in the TestLab Power Electronics at Fraunhofer ISE show that many manufacturers of utility-scale PV inverters have problems to control the current under grid disturbances generated by the low voltage ride through (LVRT) test facility. Therefore a statespace control approach has been evaluated which shows better behaviour than the state-of-the- art DQ-PI-control. The algorithms were implemented on an FPGA platform instead of the widely used Microprocessors to reduce computation delay. Results show, that an FPGA based control platform increases the flexibility for different control techniques and overall controller performance which is verified by measurements under real conditions.