Design and Implementation of Highly Efficient Motor Driver
Vibhav Kumar Sachan, Shivam Mishra and Syed Akhtar Imam
Due to the robust construction of AC drives, the majority of industries use AC drives. Low maintenance cost, Low power loss, easy to use and simple arrangement for starting the motor are the advantages due to which it is widely used in the industries. But the AC drives are constant speed drives and its speed can not be controlled smoothly over a wide range and operation in either direction. Direct Current (DC) motor is also an important drive configuration which is widely used in many applications. It is used in wide range of power and speed. The ease of access and good performance of the DC motor decides the growth of its use in the number of applications. There are many conventional methods available for controlling the speed of the DC motor, modern methods include high-speed switching power devices. The power switching devices provide accuracy and precision to speed control of the DC motor. The most efficient method for controlling the speed of DC motor is PWM control, it is very easy as well as cost efficient method. It is done by using the microcontroller which removes bulkiness of the system and provides increased reliability and flexibility to the control. When the load on the DC motor increases then it’s current requirement also increases. For high current, the normal H-bridge configuration is not efficient as it gets heated up and then burns. The design of high current bearing H-bridge configuration or motor driver and generation of PWM and programs for the microcontroller are discussed in detail in this research paper.
Keywords: Microcontroller, PWM, H-bridge, DC motors, speed control