Development of a Permanent-magnet Brushless DC Motor Controller

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Supervisor:
Dr. Sütő Zoltán
Department of Automation and Applied Informatics

The topic of the final project is to design a motor controller board to a brushless DC (BLDC) motor. The designed circuit is going to be used on educational purpose, so sufficient number of measurement points must be placed, and must be protected from mishandling. It has to be capable of performing various types of control algorithms, in case of both sensor-based and sensorless drives. Short development time and reliability were the main design aspects.

In the design process, top-down designing approach was used. Creating a system plan is essential, then calculations for component parameters can be derived. It is followed by the (physical) component selection and the design of the printed circuit board.

The finished product can operate a BLDC the motor and any kind of controllers can be implemented. The phase currents and induced voltages can be monitored through measurement points. The device is protected from reverse polarity, overvoltage, -current, -temperature. It is able to power a 200 [W] motor. The designed printed circuit board was produced, and it passed lots of tests. At the end of the design description, a cost report can be found.

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