Drives
What is PWM (Pulse Width Modulation)?
Definition
A technique used by drives to create variable-voltage, variable-frequency AC output by rapidly switching DC voltage on and off. PWM carrier frequency affects motor noise, heating, and electromagnetic interference levels.
Related Terms
Inverter
The output stage of a drive that converts DC bus voltage into variable-frequency...
IGBT (Insulated Gate Bipolar Transistor)
A high-power semiconductor switch used in drives and inverters to convert DC bus...
Carrier Frequency
The PWM switching frequency of a drive's inverter stage, typically between 2 and...
Need help with PWM (Pulse Width Modulation)?
Our engineers have 32+ years of experience diagnosing and repairing drives equipment. Get expert support for your pwm (pulse width modulation) issues.
Back to Full Glossary502 terms across all categories