Design, Construction and Study of Small Scale Vertical Axis Wind Turbine Based on Magnetically Levitated Axial Flux Permanent Magnet Generator

Abstract

A small scale vertical axis wind turbine (VAWT) with axial flux permanent magnet (AFPM) generator has been designed and magnetic levitation method is used to increase the efficiency of this type of wind turbine [1]. Magnetic levitation is inserted by using rare earth permanent magnets, the repelling force of magnets are used to suspend the rotating part of both turbine and generator. Moreover, design of simple generator which can easily drive without geared mechanism, lessen cost and the complexity of the system by reducing the quantity of driving components. Three phase output is obtained from designed generator which is converted into direct current through three-phase rectifier to charge the batteries. The performance of proposed prototype is also tested experimentally. The turbine performs as predicted by the design process.

Tracking Control of Magnetic Levitation System Using Model-Free RBF Neural Network Design

“…In addition to the problems of disturbance and parameter change during the operation of MLS, the unmodeled dynamics of MLS should be taken into consideration. It is assumed that there is the high frequency unmodeled dynamic in MLS, an unmodeled dynamic ( 0.3sin (10 ) t  ) is added to MLS, the response of MLS in case of unmodeled dynamic is shown in Fig. 12.…”

“…MLS has the advantages of low energy consumption, no friction and so on. It has been widely used in engineering and education, such as magnetic levitation bearing [6], magnetic levitation train [7]- [9], magnetic levitation wind turbines [10], etc. The controller design is very important for engineering application, and the control of MLS is an important and attractive research direction in the control field.…”

Comparison of Stator Windings on Permanent Magnet Generators for Horizontal Axis Wind Turbine (Hawt)

“…With Tf is the distance between magnets (cm) and b is the magnetic length (cm), the distance between magnets is 2.5 cm. The distance between these magnets is used to search the circumference of the rotor [5]. Calculation of rotor circumference using equation 3.…”

“…The calculation of the magnetic area is used to determine the area of the rotor disk since the area of the stator disk must be in accordance with the area of the rotor disk [6]. Calculation of area of magnet area using equation 4.…”

Building a low cost wind turbine in highways for rural house electricity demand

“…Capital cost of SWT Electricity cost 3SWT Power output (5) Paypack period in highway In India, the rural houses are located far away from the power plant locations and the electrical load requirement is only 20% in most of the rural areas in India. The houses are not located nearer in the rural villages.…”