Advanced Type-1c FLL for Enhancing Converters Synchronization During Frequency Drift

نویسندگان

چکیده

This paper introduces a novel out-loop compensation scheme with selective filtering stage for Type-1 Frequency Locked Loop (FLL) to obtain the same features of Type-2 FLL in response frequency drift. The proposed can eliminate phase angle error during drift without compromising its benefits low order control system. performance Type1-c is evaluated alternatively employed Delayed Signal Cancellation (DSC), Low Pass Filter (LPF) harmonics and multiple second-order generalized integrator (MSOGI) as pre-filtering under various grid disturbances. effects each on dynamic mitigation are identified. As filter has distinct advantage disturbance, approach used insert most suitable based severity disturbance achieve best performance. A comprehensive study conducted demonstrate superior schemes both simulation experimental validation. In addition, potential application Type-1c enhancing islanded microgrid operation been presented verified.

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ژورنال

عنوان ژورنال: IEEE Transactions on Power Delivery

سال: 2021

ISSN: ['1937-4208', '0885-8977']

DOI: https://doi.org/10.1109/tpwrd.2020.3001217