Title :
Piecewise Affine System Identification of a Hydraulic Wind Power Transfer System
Author :
Vaezi, Masoud ; Izadian, Afshin
Author_Institution :
Purdue Sch. of Eng. & Technol., Energy Syst. & Power Electron. Lab., Indianapolis, IN, USA
Abstract :
Hydraulic wind power transfer systems exhibit a highly nonlinear dynamic influenced by system actuator hysteresis and disturbances from wind speed and load torque. This paper presents a system identification approach to approximate such a nonlinear dynamic. Piecewise affine (PWA) models are obtained utilizing the averaged nonlinear models of hysteresis in a confined space. State-space representation of PWA models is obtained over the allocated operating point clusters. The experimental results demonstrate a close agreement with that of the simulated. The experimental results and simulation show more than 91% match.
Keywords :
actuators; hydraulic turbines; identification; nonlinear control systems; nonlinear dynamical systems; state-space methods; wind power plants; PWA model; averaged nonlinear hysteresis models; hydraulic wind power transfer system; load torque disturbances; nonlinear dynamics; piecewise affine system identification; state-space representation; system actuator hysteresis; wind speed disturbances; Hydraulic systems; Nonlinear systems; System identification; Wind power generation; Wind turbines; Hydraulic wind power systems; nonlinear systems; piecewise affine (PWA) models; system identification; system identification.;
Journal_Title :
Control Systems Technology, IEEE Transactions on
DOI :
10.1109/TCST.2015.2398311
