Design of a microcontroller-based converter for 3-phase brushless dc motor drives

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Date
2009-09
Authors
Mohd Nayan, Norkharziana
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Abstract
In industrial application and medical devices, it can be seen that there is a need of controlling the devices or machines with observation of the output process and input control from a computer. Presently, machines control is located on the devices casing as it may require control and observation from the operator from time to time. By utilizing the features of microcontroller, operation and monitoring the process control can be done far away from the operating equipment. In the mean time, operator can observe the performance of the equipment by just using the computer. Furthermore, if the process control contains hazardous material, a long distant controller may be useful for the application of this drive system. The microcontroller-based converter system design for 3-phase BLDC motor drives has been proposed in this research in order to create better solution for long distance control and provides another selection of motor drives system. The designed motor drives system has the advantages of minimum hardware requirement, low-cost system implementation and c~ble of performing variant pulse control switching schemes. The designed system also provides speed controls accuracy and good response to the drive system. The input and output of the motor can be controlled on the drives and observed by using HMI-based computer software. Further analysis on the sample of PWM switching scheme has been made using the converter system. This research has shown that the selected switching scheme can be used to drive the 3-phase BLDC motor while the speed adjustment can be easily made. The experimental results obtained describe the effects of the 3-phase BLDC motor performance when driven with a sample of PWM switching scheme.
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A need of controlling the devices or machines with observation of , the output process and input control from a computer.
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