Look into ABB wound rotor (slip-ring) motors

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ABB’s wound rotor motors also called as slip ring motors are best suited to the most demanding applications.
Where a high starting torque is required or a high inertia load needs to be started, then ABB’s slip ring motors are the right choice allowing successful operation on weak networks with their very low starting current demand.
The starting characteristics and torque performance of slip-ring motors make them an optimal match for conveyors, mills, crushers and fans in cement plants. High starting torque from slip-ring motors also helps minimize mechanical stresses on the driven equipment, increasing the lifetime of the equipment and reducing maintenance needs.