Voltage generation characteristics of an axial flux permanent magnet (AFPM) generator
Rusmana, Alvera Apridalianti Melkias, Nurrohman

Department of Energy Conversion Engineering, Politeknik Negeri Bandung Jalan Gegerkalong Hilir, Ciwaruga 40012, Jawa Barat, Indonesia

Abstract

A specially designed low speed generator has been developed in order to be used on low speed turbines. The axial flux permanent magnet (AFPM) generator type was chosen to meet these needs. The generator consists of a stator and a rotor. To determine the characteristics of the AFPM generator, we conducted a study of the effect of the distance between the stator and rotor, and the effect of rotational speed on the output voltage. The stator armature was made of copper wire with a diameter of 0.2 mm. The number of turns of a winding was 200 turns which produced a resistance of 100 ohms. The shape of the armature was adjusted to the shape of the magnet. The rotor disc was occupied by 18 magnets arranged symmetrically. The size of the magnet was 50 mm long, 30 mm wide and 10 mm thick. The laboratory test was conducted by placing the rotor ranging from 23 mm to 15 mm, with changes in distance of 2 mm each, from the stator. From the measurement, the linear equation of output voltage vs rpm curve was obtained as well as the output vs stator-rotor equation. From the result, it can be seen that increase of rpm and the closer the rotor-stator distance, the higher the output voltage.

Keywords: AFPM generator, characteristics, output voltage, rotor, low speed generator

Topic: Mechanical Engineering

Link: https://ifory.id/abstract-plain/8NYAZDQbL7mf

Web Format | Corresponding Author (Alvera Apridalianti Melkias)