Synchronous reference frame hysteresis current control for grid converter applications

This paper presents the application of space-vector based hysteresis current control in the synchronous reference frame for grid connected voltage source converters. The space-vector based approach allows for systematic application of zero-voltage vectors and prevents high switching frequencies caus...

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Published inProceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010 pp. T3-111 - T3-119
Main Authors Suul, J A, Ljokelsoy, K, Midtsund, T, Undeland, T
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2010
Subjects
Active damping
Converter control
Converters
Current control
Hysteresis
Non-linear control
Switches
Switching frequency
Voltage control
Voltage Source Converter
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Summary:This paper presents the application of space-vector based hysteresis current control in the synchronous reference frame for grid connected voltage source converters. The space-vector based approach allows for systematic application of zero-voltage vectors and prevents high switching frequencies caused by phase interaction. The average switching frequency can be minimized by always selecting the zero-voltage vector that is closest to the previous switching state. For operation in a grid connected converter with LCL-filter, the current references to the hysteresis controllers are given by a DC-link voltage controller and an Active Damping strategy for preventing filter oscillations. Results from simulations and laboratory experiments are presented to discuss the features of the investigated approach compared to traditional phase-current hysteresis controllers.
ISBN:1424478561
9781424478569
DOI:10.1109/EPEPEMC.2010.5606801