System Integration of the Horizontal-Axis Wind Turbine: The Design of Turbine Blades with an Axial-Flux Permanent Magnet Generator

Abstract

Abstract:In designing a horizontal-axis wind turbine (HAWT) blade, system integration between the blade design and the performance test of the generator is important. This study shows the aerodynamic design of a HAWT blade operating with an axial-flux permanent magnet (AFPM) generator. An experimental platform was built to measure the performance curves of the AFPM generator for the purpose of designing the turbine blade. An in-house simulation code was developed based on the blade element momentum (BEM) theory and was used to lay out the geometric shape of the turbine blade, including the pitch angle and chord length at each section. This simulation code was combined with the two-dimensional (2D) airfoil data for predicting the aerodynamic performance of the designed blades. In addition, wind tunnel experiments were performed to verify the simulation results for the various operating conditions. By varying the rotational speeds at four wind speeds, the experimental and simulation results for the mechanical torques and OPEN ACCESSEnergies 2014, 7 7774 powers presented good agreement. The mechanical power of the system, which maximizes at the best operating region, provided significant information for designing the HAWT blade.

Small Wind Turbine Blade Design and Optimization

“…The rotor-design was also obtained, which consists of 3-blades with a diameter of 4 m, a hub of 20 cm radius, a tip-speed ratio of 6.5, and can generate around 650 W with a Power coefficient of 0.445 at a wind-speed of 5.5 m/s, reaching a power of 1.18 kW and a power coefficient of 0.40 at a Figure 10. A comparison between the proposed approach and experimental works in [38,39]. Table 3.…”

“…The comparison is valid due to adopting the same test conditions during the simulation. The first comparison considered the operation of the designed turbine at a wind speed of 12 m/s with Reynolds number of 100,000, and the radius of the blade was less than 2 m as in [38]. Figure 10a depicts the simulation results in terms of the power coefficient of the designed blade at different tip speed ratios in comparison with experimental results in [38].…”

“…The first comparison considered the operation of the designed turbine at a wind speed of 12 m/s with Reynolds number of 100,000, and the radius of the blade was less than 2 m as in [38]. Figure 10a depicts the simulation results in terms of the power coefficient of the designed blade at different tip speed ratios in comparison with experimental results in [38]. The simulation's settings in Qblade have been updated to establish another comparison in which the designed turbine will operate at rated wind speed of 10.5 m/s with a cut-in speed of 4 m/s and cut out speed of 15 m/s at rated rotating speed of 250 rpm as in [39].…”

Analytical Modeling of Static Eccentricities in Axial Flux Permanent-Magnet Machines with Concentrated Windings

“…Moreover, because of the disc shaped rotor and stator structure, an AFPM is smaller in size than its RFPMMs counterparts. This particular structural characteristic makes it easy to address the space limitation in some applications such as electric vehicles (EV) [2], hybrid electric vehicles (HEV) [3], wind turbos [4] and flywheel storage systems [5], etc.…”

Computational fluid dynamics analysis of the vertical axis wind turbine blade with tubercle leading edge

“…Many analytical models have been studied for designing the turbine blade and predicting the performance of VAWT. These models can be categorized as (1) Momentum model; 3 (2) Vortex model; 4,5 and (3) Cascade model. 6 Recently, the approaches using computational fluid dynamics (CFD) for simulating the aerodynamic characteristics of VAWT blade have been proposing.…”