The only type of motor that allows more torque at reduced speed without drawing way too much current is a DC motor with a series-connected field. All other types of motor have greatly increased current and losses as the load torque increases above the rated load torque.

The only type of motor that allows more torque at reduced speed without drawing way too much current is a DC motor with a series-connected field. All other types of motor have greatly increased current and losses as the load torque increases above the rated load torque. Even a series motor will not allow loading to anywhere near that much speed reduction.