A Variable Frequency Drive (VFD) is a motor control device that optimizes the speed and torque of AC induction motors by dynamically adjusting the voltage and frequency of the electrical supply 

How It Works

1. Rectifier Stage – Converts incoming AC power into DC.

2. DC Bus – Uses capacitors to smooth the converted power.

3. Inverter with PWM Control – Converts DC back into AC with adjustable voltage and frequency.

4. Control System – Ensures a constant voltage-to-frequency ratio (V/f), allowing precise motor speed regulation