Voltage sag ride-through performance of Virtual Synchronous Generator

Virtual Synchronous Generator (VSG) is an inverter control structure that supports power system stability by imitating a synchronous machine. Because of the limitation in inverter power and current, their operation under disturbances should be evaluated and enhanced. In this paper, the VSG unit resp...

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Bibliographic Details
Main Authors: Alipoor, Jaber, Miura, Yushi, Ise, Toshifumi
Format: Conference Proceeding
Language:English
Subjects:
Acceleration
Control systems
distributed generation
Generators
inverter
Inverters
Power system stability
Robustness
voltage sag
Citations: Items that cite this one
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Summary:Virtual Synchronous Generator (VSG) is an inverter control structure that supports power system stability by imitating a synchronous machine. Because of the limitation in inverter power and current, their operation under disturbances should be evaluated and enhanced. In this paper, the VSG unit response to different types of faults at grid side is assessed. Besides, a theoretical analysis that traces the trajectory of state variable of the system during voltage sag is represented to justify the effect of the characteristics of symmetrical and unsymmetrical voltage sags. Knowing the critical characteristics (duration and initial point-on-wave) of each type of voltage sag created by fault, proper measures can be embedded to eliminate the hazardous consequences of voltage sags. Furthermore, three additional controllers for voltage sag ride-through enhancement are implemented and tested by experiments.
ISSN:2150-6078
DOI:10.1109/IPEC.2014.6870160