Single-phase and Three-phase Electric Generators as a Didactic Support to Electromagnetism Teaching

• Autor(a) principal: Alves, André Luíz
• Data de Publicação: 2020
• Outros Autores: Motta, Yohannes Benincá, Zancanella, Antônio Carlos Barbosa
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Caderno Brasileiro de Ensino de Física (Online)
• Texto Completo: https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2020v37n2p879

Electric energy is of fundamental importance to the modern world because it is a source of light, heat and driving force of all electronic machines and equipment. Aiming to show the importance of physics in the students' daily life, this work proposed the construction and study of single-and three-phase alternating current electric generators. When faced with this experiment, the student will realize how important Faraday's law is for understanding the operation of generators. It was possible to understand from this law, the connection between the coils and the arrangement of the magnets in the studied systems. Graphs were constructed to investigate the relationship between the generated wave frequency and the generator rotation frequency and the relationship between the effective voltages and the rotation frequency. In particular, in the three-phase system it was possible to understand through illustrations the connections between coils for generators with six or more coils in star and triangle connections. The experimental apparatus is very practical, easy to build and to be assembled and disassembled. The average cost was around R$: 300.00, but it depends on the number of systems assembled.