Title :
Modeling of a Hydraulic Wind Power Transfer Utilizing a Proportional Valve
Author :
Deldar, Majid ; Izadian, Afshin ; Vaezi, Masoud ; Anwar, Sohel
Author_Institution :
Sch. of Eng. & Technol., Purdue Univ., Indianapolis, IN, USA
Abstract :
Hydraulic circuits can transfer remarkable amounts of energy in the desired direction without taking large space. To implement this technology for harvesting the energy of wind appropriately, models of the system are required. Hydraulic wind power technology has the benefits of eliminating expensive and bulky variable ratio gearbox and its costly maintenance, while enabling the integration of multiple wind turbines in a single generation unit. In this paper, the dynamics of different hydraulic elements are studied, nonlinearities are taken into account, pressure dynamics in different parts of the system are studied, and the motor load effects are considered. Based on these considerations, a novel nonlinear state-space representation of the system is introduced. Results of the mathematical model and the experimental data are compared to verify the proposed model. The comparison demonstrated that the mathematical model captures all major characteristics of the hydraulic circuit and can model the system behavior under different operating conditions.
Keywords :
hydraulic systems; mathematical analysis; wind power; wind turbines; hydraulic circuit; hydraulic elements; hydraulic wind power transfer; mathematical model; motor load effects; nonlinear state-space representation; pressure dynamics; proportional valve; system behavior modeling; Equations; Fluids; Mathematical model; Synchronous motors; Valves; Wind power generation; Wind turbines; Hydraulic wind power transfer; mathematical modeling; wind turbine;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2014.2354745