The device that converts AC input to DC within a motor drive is the

The device that converts AC input to DC within a motor drive is the

• A. Inverter
• B. PWM
• C. Capacitor
• D. Converter

Answer: (D)

The key idea is that a motor drive often needs to convert the incoming AC power to DC before it can be processed and then back to controlled AC for the motor. That first conversion is done by a rectifier, which is a type of converter. So the device that turns AC into DC inside the drive is the converter. An inverter would do the opposite (DC to AC), PWM is a control method used within the inverter to shape the output, and a capacitor stores energy but does not perform the conversion.

The key idea is that a motor drive often needs to convert the incoming AC power to DC before it can be processed and then back to controlled AC for the motor. That first conversion is done by a rectifier, which is a type of converter. So the device that turns AC into DC inside the drive is the converter. An inverter would do the opposite (DC to AC), PWM is a control method used within the inverter to shape the output, and a capacitor stores energy but does not perform the conversion.