Primary frequency control of DFIG-WTs using bang-bang phase angle controller



Liu, Yang, Jiang, Lin ORCID: 0000-0001-6531-2791, Smith, Jeremy S ORCID: 0000-0002-0212-2365 and Wu, QH
(2018) Primary frequency control of DFIG-WTs using bang-bang phase angle controller. IET GENERATION TRANSMISSION & DISTRIBUTION, 12 (11). pp. 2670-2678.

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Abstract

A bang-bang phase angle controller (BPAC) was proposed in this study for the primary frequency control of doublyfed induction generator-based wind turbines (DFIG-WTs). Dynamics of the internal voltage of a synchronous generator (SG) and that of a DFIG-WT were investigated in frequency deviation events. A BPAC was designed to regulate the phase angle obtained with a phase-locked loop directly, which enables the rapid active power control of the DFIG-WT. The BPAC signal is fed into the active power regulation loop of the pitch angle controller, which is expected to help rotor speed recovery and prevent secondary frequency drop. The small-signal analysis was carried out for the closed-loop system, composed of the DFIG-WT and the external SG-based power system, to verify the stability of the overall system. Simulation studies were undertaken on a wind power penetrated multi-machine power system, through which the primary frequency control performance of the BPAC was verified.

Item Type: Article
Uncontrolled Keywords: frequency control, power control, wind turbines, wind power plants, asynchronous generators, synchronous generators, power generation control, machine control, bang-bang control, phase locked loops, rotors, pitch control (position), closed loop systems, DFIG-WTs, primary frequency control, bang-bang phase angle controller, doubly-fed induction generator-based wind turbines, internal voltage dynamics, synchronous generator, frequency deviation events, phase angle regulation, phase-locked loop, active power control, BPAC signal, active power regulation loop, pitch angle controller, rotor speed recovery, secondary frequency drop prevention, external SG-based power system, small-signal analysis, closed-loop system, wind power, multimachine power system
Depositing User: Symplectic Admin
Date Deposited: 19 Nov 2018 10:45
Last Modified: 19 Jan 2023 01:12
DOI: 10.1049/iet-gtd.2017.0282
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3028926

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