Portescap in Motion

Understand the Effect of PWM When Controlling a Brushless DC Motor

Posted by Matthieu Bouat   Dec 15, 2021

Understand the Effect of PWM When Controlling a Brushless DC Motor

Designers of motion systems often face challenges when selecting or developing electronics using pulse width modulation (PWM) to drive brushless DC motors. To avoid unexpected performance issues, it’s important to understand some of the basic concepts.

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Topics: PWM drive, pulse width modulation, Portescap, brushless DC motor, DC motors, PWM regulations, PWM method, PWM frequency, chopper amplifiers, ripple, joules losses, iron losses, Faraday-Lenz law of induction, linear amplifiers, eddy currents

Controlling Brushed DC Motors with Pulsed-width Modulation (PWM)

Posted by Sunil Kedia   Sep 23, 2021

Controlling Brushed DC Motors with Pulsed-width Modulation (PWM)

The enduring popularity of coreless brushed DC motors comes from a combination of their simplicity of design, fast transient responses, negligible iron losses and ease of control. With speed proportional to applied voltage, the motor can be simply driven using a continuous linear regulation power supply. But is this always the best solution?

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Topics: pulse width modulation, PMW, motor performance, Coreless brush DC motor

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