Design and development of dual axial halbach array permanent-magnet synchronous generator (pmsg) for magnetically levitated small-scale vertical axis wind turbine driver/ Shintaro G. Alvarez, Michelle Ann S. Anor, Queen Alyana M. Bernabe, Jeric Ivan DC. Julian, Clark Andrei G. Mendoza, and Jannah P. Montero.--

Bachelor's thesis

College of Engineering.-- Bachelor of science in electrical engineering: Technological University of the Philippines, 2025.

Includes bibliographic references and index.

This study focuses on the development of a small-scale wind turbine designed specifically
for low wind speed areas, utilizing a dual-rotor axial flux generator. The primary objective
is to create an efficient energy-generation system by combining magnetic levitation and
advanced flux management techniques. The system employs magnetic bowls, where
magnets repel each other and are tilted at seventy degrees to stabilize and lift the rotor,
enabling frictionless operation. For the dual-rotor generator, a Halbach array configuration
is used to enhance magnetic flux density, reduce flux leakage, and concentrate the magnetic
field within the coils to maximize energy harnessing.
The results demonstrate that magnetic levitation significantly increases the rotor's
revolutions per minute compared to traditional bearing systems, while also reducing
friction. Furthermore, the Halbach array configuration enhances the flux density by
threefold and increases the effective height of the magnetic field, leading to improved
power output.
A wind assessment conducted at Cupang Senior High School in Muntinlupa City, near
Laguna de Bay, confirmed the suitability of the site’s low-speed, onshore wind conditions
for small-scale turbine deployment. CFD analysis using SimScale showed that the

Conventional Savonius blade design outperformed the Ice blade design in terms of low-
speed performance. FEA further verified the effectiveness of the Halbach array in

enhancing magnetic field strength and generator performance, especially at smaller air
gaps. These findings support the DAHAPMSG system’s viability as a reliable, efficient
renewable energy solution for low-wind, urban environments.