Title: Nonlinear power control of variable speed wind turbines above rated wind speed

Authors: Miaomiao Ma; Yushen Sun; Shaoyuan Yu; Junjun Pan

Addresses: School of Control and Computer Engineering, North China Electric Power University, No. 2 Beinong Road, Huilongguan, Changping District, Beijing 102206, China ' School of Control and Computer Engineering, North China Electric Power University, No. 2 Beinong Road, Huilongguan, Changping District, Beijing 102206, China ' School of Control and Computer Engineering, North China Electric Power University, No. 2 Beinong Road, Huilongguan, Changping District, Beijing 102206, China ' School of Control and Computer Engineering, North China Electric Power University, No. 2 Beinong Road, Huilongguan, Changping District, Beijing 102206, China

Abstract: This paper proposes a triple-step nonlinear control scheme for variable speed wind turbines above the rated wind speed to maintain the output power at the rated value. The controller design procedure is divided into three parts: steadystate-like control; feedforward control based on reference dynamics; and state dependent feedback control. The gains of the controller are state-dependent and parameter-varying. The simulation results for a NREL-offshore-baseline 5 MW wind turbine system show the efficiency of the proposed nonlinear controller.

Keywords: variable speed wind turbine; pitch control; nonlinear control; rated power.

DOI: 10.1504/IJSCIP.2018.092313

International Journal of System Control and Information Processing, 2018 Vol.2 No.3, pp.236 - 254

Received: 09 Nov 2017
Accepted: 25 Nov 2017
Published online: 14 Jun 2018 *

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