Experimental results of the variable speed, direct drive multipole synchronous wind turbine TWT1650

Abstract

This article presents details of the new variable speed multipole large wind turbine TWT1650 designed by the M. Torres group and summarizes some experimental results of the control system. After several years of multidisciplinary research the first prototype TWT1650 began to work at Cabanillas Wind Farm (Spain) in August 2001.Since then a large number of operational data have been collected and used to improve the behaviour of the machine. The design and controller tuning have been accomplished using advanced QFT (quantitative feedback theory) robust control strategies and have been optimized based on analysis of that information. This article introduces the main advantages of the multipole system and shows and evaluates some of the most representative experimental results under extreme wind conditions.

A New Cost-Effective Wind Farm Structure with HVDC Link Preserving Technical Advantages of Advanced offshore Wind Farms

“…An example of electrically excited system is TWT1650 wind turbine with a direct driven generator of 1800 kW rating, designed by M. Torres group. First prototype of this wind turbine began operation at Cabanillas wind farm (Spain) in August 2001 [7]. Also, Enercon and Lagerwey are other examples of wind turbine manufacturers that have used directdriven wound rotor synchronous generators [5].…”

Control of a Stand-Alone Wound Rotor Synchronous Generator: Two Sliding Mode Approaches via Regulation of the d-Voltage Component

“…For a resistive load case (4) and (3) can be expressed in current terms as (5) Note that, a fix value of in (5), namely (6) implies that the control goal defines a cylinder in the state space, see Fig. 2.…”

“…This configuration, which is significantly different to the grid connected topology, is given in several emergency devices (as diesel generators) or hybrid electrical vehicles [4], and can be also applied to the large wind generators connected to the grid through a back-to-back converter [5], [6]. In this scenario neither amplitude nor frequency of stator voltage are fixed.…”

Beyond the linear limitations by combining switching and QFT: Application to wind turbines pitch control systems

“…It definitely affects the reliability, fatigue loads, maximum mechanical loads, cost and optimum performance of the machine [8,9]. This paper is organized as follows.…”