Hello everybody,
I understand that DC motor adjusts the speed by increasing/decreasing Av.But if the load torque increases, Av should be increased in order to provide sufficient Ia .Now speed increases because Av has increased so "N" should go up again and it goes to a loop .I don't understand how the torque can be controlled without thouching motor speed.
I think for variable speed applications torque must stay constant otherwise we won't be able to adjust the speed.Is this right?
I understand that DC motor adjusts the speed by increasing/decreasing Av.But if the load torque increases, Av should be increased in order to provide sufficient Ia .Now speed increases because Av has increased so "N" should go up again and it goes to a loop .I don't understand how the torque can be controlled without thouching motor speed.
I think for variable speed applications torque must stay constant otherwise we won't be able to adjust the speed.Is this right?