Diseño y construcción de un generador de flujo radial de imanes permanentes de neodimio con polos salientes en el rotor

Abstract

The present technical work consists in the design and construction of a permanent magnet generator of radial flow with salient pole in the rotor and performance tests with a Michell Banki turbine and a Pelton together with a diaphragm pump. Designed electrical machine that consists of the following stages: 1) selection of the magnetization degree of the magnet, inductor core materials and armature and winding, type of winding, number of slots per pole and per phase, linear current density and number of pairs of poles, 2) sizing of the internal and external diameter of the stator, air gap space, outer diameter of the rotor, axial length of the armature, calculation of the number of grooves and turns per phase, wire gauge and losses for iron and copper, 3 ) selection of bearings, power transmission system and dynamic dimensioning of the inductor shaft, 4) construction of the generator, 5) obtaining results. Real-time data acquisition was carried out by means of electronic equipment, with simple connection configurations and star coils, obtaining as results: a) the efficiency reached in one phase is 5.1% with a power of 32 (W) with revolutions of rotation between 830 and 814 (rpm) and flows of 115 and 68 (m3 / h) in the turbines Michell Banki and Pelton respectively, b) star connection of coils, the efficiency obtained is 78% at a power of 1 , 4 (kW) with revolutions of rotation between 820 and 804 (rpm) and flow rates of 129 and 72 (m3 / h) in the Michell Banki and Pelton turbines respectively. The turbo-pump-generator system was quite efficient, expanding its applications to the generation of electricity, water pumping and construction techniques, a project that will serve for future applications in vulnerable sectors.