Control Techniques 4Q2/12

Control Techniques for DC Drives encompass various methods and techniques used to manipulate and regulate the speed and torque of Direct Current (DC) motor drives. These techniques are crucial in ensuring optimal performance and functionality in various industrial applications.

One widely used control technique is the armature voltage control, which involves adjusting the voltage supplied to the motor's armature. By regulating this voltage, the speed and torque of the motor can be controlled. Another technique is field flux control, where the magnetic field strength in the motor's field winding is adjusted. This technique allows for precise control of the motor's speed.

Additionally, the field weakening control technique is employed in applications where high-speed operation is required. This technique involves reducing the field current, which leads to a decrease in the motor's magnetic field strength. As a result, the motor can achieve higher speeds. Furthermore, current control techniques are utilized to regulate the armature and field current, thereby controlling the motor's torque and speed.

Advancements in technology have led to the development of more sophisticated control techniques, such as the pulse width modulation (PWM) control. PWM control utilizes high-frequency switching to deliver a pulsed signal to the motor.