Low-cost PWM speed controller for an electric mini-baja type vehicle
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Data
2007-01-01
Autores
De Lucena, Samuel Euzédice [UNESP]
Marcelino, Márcio Abud [UNESP]
Grandinetti, Francisco José
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Resumo
This paperwork presents a Pulse Width Modulation (PWM) speed controller for an electric mini-baja-type car. A battery-fed 1-kW three-phase induction motor provides the electric vehicle traction. The open-loop speed control is implemented with an equal voltage/frequency ratio, in order to maintain a constant amount of torque on all velocities. The PWM is implemented by a low-cost 8-bit microcontroller provided with optimized ROM charts for distinct speed value implementations, synchronized transition between different charts and reduced odd harmonics generation. This technique was implemented using a single passenger mini-baja vehicle, and the essays have shown that its application resulted on reduced current consumption, besides eliminating mechanical parts. Copyright © 2007 by ABCM.
Descrição
Palavras-chave
Electric vehicles, Induction motors, PWM, Speed controllers, Speed drive, Costs, Electric current control, Microcontrollers, Pulse width modulation, Speed control, Electric vehicle traction, Open-loop speed control, Synchronized transition
Como citar
Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 29, n. 1, p. 21-25, 2007.