Filtering High-Frequency Pulse Width Modulation Effects in Electric Motors: From Problem to Solution - Resource Library - EASA | The Electro•Mechanical Authority
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Filtering High-Frequency Pulse Width Modulation Effects in Electric Motors: From Problem to Solution

  • November 2025
  • Number of views: 40
  • Article rating: No rating

Bram Corne
Technical Services Committee Member
Orbits
Kortrijk, Belgium 

Introduction
In modern industry, electric motors driven by variable frequency drives (VFDs) have become the standard for energy efficiency and process control. These drives rely on pulse width modulation (PWM) to regulate motor speed and torque, aiming on current signals that approximate a sine wave. While highly effective for control, PWM introduces high-frequency transients that can compromise motor reliability if left unchecked.

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