DocumentCode :
3536369
Title :
Encoderless model predictive control of back-to-back converter direct-drive permanent-magnet synchronous generator wind turbine systems
Author :
Zhenbin Zhang ; Hackl, Christoph ; Fengxiang Wang ; Zhe Chen ; Kennel, Ralph
Author_Institution :
Inst. of Electr. Drive Syst. & Power Electron., Tech. Univ. Munchen, Munich, Germany
fYear :
2013
fDate :
2-6 Sept. 2013
Firstpage :
1
Lastpage :
10
Abstract :
This paper presents encoderless model predictive control scheme with time-varying sliding mode observer for a complete wind turbine system. The wind turbine system consists of a back-to-back converter (AC/DC/AC) and a direct-drive permanent-magnet synchronous generator (PMSG). We give a complete model of the system and present encoderless fixed-frequency model predictive direct torque control of the generator and finite-set model predictive direct power control of active and reactive power on the grid side. The sliding mode observer utilizes a time-varying switching gain and a time-varying cut-off frequency to estimate rotor position and rotor speed without chattering. The proposed strategy is illustrated by simulations as a first proof of concept. The simulation results show that the proposed strategy achieves fast torque control dynamics and highly decoupled control of active and reactive power.
Keywords :
AC-DC power convertors; DC-AC power convertors; permanent magnet generators; power generation control; predictive control; reactive power control; rotors; synchronous generators; time-varying systems; torque control; variable structure systems; wind turbines; AC-DC-AC power converters; PMSG; back-to-back converter; decoupled control; direct-drive permanent magnet synchronous generator; encoderless model predictive control; finite set model predictive direct power control; predictive direct torque control; reactive power control; rotor position; rotor speed; time-varying sliding mode observer; torque control dynamics; wind turbine systems; Generators; Observers; Predictive control; Rotors; Switches; Vectors; Wind turbines; Direct power control; Non-linear control; Optimal control; Sensorless control; Wind energy; Windgenerator systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
Type :
conf
DOI :
10.1109/EPE.2013.6632002
Filename :
6632002
Link To Document :
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