Development of a single phase axial flux permanent magnet alternator for micro-hydropower applications

Date

2011

Degree

Bachelor of Science in Electrical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Roderick L. Catriz

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Abstract

Renewable energy systems have increasing interests nowadays in which hydropower systems are being explored at small scales in harnessing electricity for rural applications. This pursuit of energy exploration brought studies of machine configurations suitable for micro-hydro applications.

An axial flux permanent magnet (AFPM) was developed in single-rotor single- stator configuration tested in a single and double stranded type of coil windings.

Computations of the magnetic flux density distribution in the air gap were presented by a Faraday’s disc method based on the mechanical design parameters of the machine. Two set ups were made to evaluate the AFPM alternator in which the output current, voltage, power and frequency were analyzed. The no-load set-up showed that the measured values of voltage and frequency are quite closer to computed values without considering the fringing effect of magnets. When the alternator was connected loads at varying speeds, it showed that the double stranded coil winding system, which is coiled up half the no. of turns that of single stranded, generated around 30 % of the total power output of the single stranded run at the same speed. For the improvement of this type of machine, a voltage transformer can be connected to the alternator to convert low amount of voltages to standard 230 volts output at 60 hertz frequency level and also the simplification and strengthening of the framework for possible implementation in a micro-hydro set-up and efficient material usage.

Language

English

LC Subject

Electric generators, Small scale hydropower

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993 2011 E64 E74

Document Type

Thesis

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