Conclusion
DC machines - Constitution and operation

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Conclusion


DC machines - Constitution and operation

Author : François BERNOT

Publication date: May 10, 1999, Review date: July 9, 2020 | Lire en français

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6. Conclusion

We have studied the basic physical constitution and operation of the DC motor, then modeled its operation with various excitation modes. In the second article, we'll look at questions relating to the dimensioning of DC motors.

The following are the main points to be borne in mind.

  • A DC motor is a speed-controlled actuator, which doesn't vary much when the torque changes.

  • Operation in defluxed mode allows acceleration above rated speed, with proportional torque loss.

  • The torque-to-weight ratio of a DC motor is inferior to that of its competitors, except for permanent magnet servomotors.

  • What's more, some applications,...

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