Analysis of middle frequency resonance in DFIG system considering phase locked loop - 2017 PROJECT TITLE :Analysis of middle frequency resonance in DFIG system considering phase locked loop - 2017ABSTRACT:As the wind power technology develops, the doubly fed induction generator (DFIG) primarily based wind Power System, when connected to a weak network with massive impedance, might suffer resonances, i.e., subsynchronous resonance or high-frequency resonance when connected to the series- or parallel- weak network. Besides these 2 resonances, a middle frequency resonance (MFR) between two hundred and 800 Hz could seem when the phase-locked loop (PLL) with quick control dynamics is applied. In order to investigate the MFR, the DFIG system impedance considering the PLL is studied based on the vector-oriented control strategy in rotor-facet converter and grid-side converter. On the premise of the established impedance modeling of the DFIG system, it's found that the PLL with fast management dynamics may lead to the prevalence of MFR thanks to a decreasing section margin. The simulation results of each a 7.five kW little-scale DFIG system and a 2 MW giant-scale DFIG system are provided to validate the theoretical analysis of the MFR. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Analysis and Design of Filters for Energy Storage System: Optimal Trade-off between Frequency Guarantee and Energy Capacity/Power Rating - 2017 Application Guidelines for a New Master Controller Model for STATCOM Control in Dynamic Analysis - 2017