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Question:

Which motor has a great torque when the motor is under DC at the same power?

Which motor has a great torque when the motor is under DC at the same power?

Answer:

If the DC / AC motors operate under the rated 800W output power, there is no doubt that, as long as their speed is the same, the output torque is the same, which is a static consideration.
To sum up, the DC motor is still larger than the torque of the AC motor.
After the launch, the output power of squirrel cage AC motor and slip directly related, so when the load changes, the AC motor speed will change correspondingly, and the output power of DC motor and armature current, so the external characteristics generally than external characteristics of ordinary AC motor flat hard.
Ordinary (squirrel cage) AC motor starting current and start torque is small, it is much better than the start of DC motor, which is a common sense.
Dynamic considerations need to take into account the start-up process and load changes.

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