Design Of Compact High Power DC Motor Driver

Ab. Hamid, Siti Noor Yana (2015) Design Of Compact High Power DC Motor Driver. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Design Of Compact High Power DC Motor Driver.pdf - Submitted Version Download (436kB)

Abstract

The DC motor driver based on electronic drives is a driver that consists of sophisticated electronic devices which are high speed, inexpensive and reliable. The development of this electronic drive produced a change in the control of the DC motor. The purpose of this project is to design the DC motor driver that can control the speed and direction of the DC motor and to reduce the complexity of the circuit in the DC motor driver itself. Unlike the conventional DC motor driver that only provide the constant speed at one time, the proposed design will be equipped by the four powers MOSFET that constituting the H-bridge and the gate drive that using the IR21844 IC. This driver also introduces the bootstrap method as bootstrap power supply that consists of diode and capacitor. By using bootstrap method, sophisticated electronic device part can be reduced. Furthermore, it will make the design much smaller and the complexity of the circuit can be simplified. Another advantage of using a bootstrap method is the driver will consume less power. Note that the speed of the DC motor is directly proportional of the output voltage of the DC motor driver. So, to adjust the speed of the DC motor the H-bridge of the power MOSFET will play the role as a switch. To increase the speed, the duty cycle of the power MOSFET needs to be increased and vice versa. The overall project outcome is to fabricate and design a compact driver which can be used especially for high current motor drive application.

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