The sinusoidal filter smoothes the PWM signal from the frequency converter and converts it to an almost perfect sinusoidal signal to the motor.

  • Allows the engine to run at continuously adjustable speeds and with torque adaptable to changing mechanical loads
  • Extends engine life
  • Allows the use of longer supply lines
  • The sinusoidal filter on all phases also allows the use of unshielded motor lines.

Operating the motor without a sinusoidal filter can cause several problems, such as premature aging of the motor insulation, sensor interference, etc.