Augmentation of DC-Link Protection System of PMSG Based Wind Turbine Using Fuzzy Logic Controlled Buck Controller System
Abstract
Recently, permanent magnet synchronous
generator (PMSG) is one of the most familiar type of
generator for wind power plant (WPP). Generally, PMSG
is connected to grid using back to back converter. During
fault period, power imbalance situation can be happened
between machine side and grid converter. Thus, the DC
link voltage can be rise significantly which can damage
the whole converter system. In this paper, a novel DC
Link protection system based on fuzzy logic controlled
buck converter is designed in order to augment the
transient stability of the PMSG system. The new buck
converter along with its control system is designed to
manage the supplied voltage of the braking resistor
during fault period. For investigating the performance of
the proposed system, fault analysis is performed on
different scenarios in PSCAD/EMTDC software.
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