Sliding mode extremum seeking control for maximum power point tracking in wind system

Abstract

Abstract-This paper proposes a sliding mode extremum seeking control (SM-ESC) for maximum power point tracking (MPPT) in variable speed wind energy conversion system, which includes the permanent magnet synchronous generator (PMSG), the uncontrolled rectifier, boost converter, battery and the DC constant power load (

Distributed Extremum-Seeking for Wind Farm Power Maximization Using Sliding Mode Control

“…First, optimizing a stand-alone wind turbine system in which the goal is to maintain the power efficiency coefficient C p as close to Betz's coefficient at θ i = ( 13 ), also known as Maximum Power Point Tracking (MPPT) problem (see, for example, ref. [9]). The other path, which is the subject of this work, is concerning the coordination (cooperation) between individual turbines in order to optimize the total power generated by the Farm and generate a new optimal set values of axial induction factors.…”

“…Gradient estimation and a discrete sliding mode ES method were proposed in [5]. In terms of applicability of the method, the sliding-mode-based ES has a wide scope of applications in many areas, for example, automotive [6], robotics [7], and renewable energy systems for both, solar [8] and wind [9]. Recently, different multivariable sliding-mode-based ES control schemes were proposed and analyzed.…”

“…The sliding-mode approach has the potential to simplify the implementation and improve the convergence rate. Forth, compared with the work proposed by [9] to optimize a standalone wind turbine using a single variable-sliding-mode ES, this work investigates the problem optimizing a wind farm using a multivariable ES. Finally, the implementation section features different simulation scenarios.…”

Robust Sliding Mode Control based MPPT for a PV/Wind Hybrid Energy System

“…The wind energy conversion system studied [4] [6] consists mainly of a wind turbine coupled to a permanent magnet synchronous generator (PMSG) [8] which is characterized by its high reliability, requires less maintenance, no need for gearbox and more efficiency, a ac/dc inverter and a dc/dc boost converter. The turbine converts the kinetic energy of the wind into mechanical power, the generator converts mechanical energy into electrical energy, then the rectifier converts this ac voltage to dc voltage and supplies the dc/dc boost converter which allows using an MPPT control to reach and track the maximum power point produced by the generator.…”

“…In this work, we present a part of our study which consists, on the one hand, the modeling and the simulation of a hybrid energy system combines two energy production chains; a PV system [5] that consists of a photovoltaic generator and a dc/dc booster converter, a Wind system [6] consists of a wind turbine, a PMSG generator, a ac/dc rectifier and a dc/dc boost converter. And on the other hand, optimize and improve the proposed system performance, by developing a robust MPPT controller based on the nonlinear sliding mode control [7].…”