A NEW METHOD FOR THE SYNTHETIC DETERMINATION OF THE LOSSES OF THREE–PHASE INDUCTION MOTORS

1993 ◽  
Vol 21 (3) ◽  
pp. 371-392 ◽  
Author(s):  
ANTONINO DI GERLANDO ◽  
IVO VISTOLI
ForScience ◽  
2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Vinícius Marcos Pinheiro ◽  
Luciano Coutinho Gomes ◽  
Cássio Alves De Oliveira

Os principais equipamentos encontrados para realização de movimentos mecânicos são os motores elétricos, sendo que a maior parte destes é constituída pelos motores de indução trifásicos. É inegável a crescente preocupação com a questão da eficiência energética, sendo estes equipamentos os maiores consumidores de energia elétrica, principalmente, nas indústrias. Sendo assim, este trabalho apresenta uma plataforma experimental implementada para a obtenção do rendimento dos motores de indução trifásicos a partir da determinação dos parâmetros do circuito equivalente, de ensaios térmicos e ensaios específicos para obter as perdas da respectiva máquina, com base em procedimentos presentes na norma técnica NBR17094-3:2018 da Associação Brasileira de Normas Técnicas. Neste contexto, o rendimento foi obtido para diversos carregamentos para um motor de 3 cv a partir da variação de carga em seu eixo, utilizando, para isso, uma máquina de corrente contínua. Tal plataforma permite verificar o desempenho de motores antigos, motores que passaram por processo de rebobinagem ou motores construídos sob encomenda.Palavras-chaves: NBR17094-3:2018. Motor de indução trifásico. Rendimento. Parâmetros.Experimental platform for efficiency analysis of the three-phase induction motors through specific tests recommended in the technical standard NBR17094-3:2018AbstractThe main equipment used to perform mechanical movements are electric motors, since its majority are composed by three-phase induction motors. There is an undeniable growing concern about the energy saving, being this equipment the major consumers of electricity, especially in industries. Thus, this work presents an experimental platform, implemented to get the performance of the three-phase induction motors from the determination of equivalent circuit tests, thermal tests and specific tests to obtain  the losses of the testing machine based on procedures in technical standard NBR17094-3: 2018 of the Brazilian Association of Technical Standards. In this context, the yield was obtained for several loads for a 3 cv engine from the load variation on its axle using a direct current machine. Such platform makes it possible to check the performance of older engines, engines undergoing the rewinding process or custom manufacturing engines.Keywords: NBR17094-3:2018. Three phase induction motor. Efficiency. Parameters.


Rail Vehicles ◽  
2011 ◽  
pp. 57-61
Author(s):  
Stanisław Rawicki ◽  
Marcin Nowak ◽  
Maciej Różański ◽  
Wojciech Wycinka

The paper deals with the problems of the tram vehicle control according to the criterion of the minimum electric energy consumption. The authors have extended the methodics given in literature and have elaborated the algorithm of the energysaving tram traffic taking into consideration various ride disturbances. During the running within the framework of the city conditions tram ride parameters change frequently. The mathematical models take into account the field-oriented control of traction three-phase squirrel-cage induction motors. Determination of the run algorithm ensuring the minimization of the electric energy use has been realized by application of the optimization procedure.


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