Speed regulators are a poor choice for Mine Hoist control. Mine hoists consist of distributed masses connected with very long springy ropes tied to the conveyances. Thus the system can present varying natural frequencies. ALSO Double drum hoists present a mass to the speed regulator that varies by a factor or 4 or 5 times. Hoist clutched in (two drums full of rope) to clutched out (single drum no rope)
A much better choice: The speed torque characteristics of large synchronous and induction motors are well suited for this application. Mine Hoists are stand alone machines that do not require the speed and accuracy required in steel and paper mills.
I would like to validate these statments using Matlab simulation.Speed regulators are a poor choice for Mine Hoist control. Mine hoists consist of distributed masses connected with very long springy ropes tied to the conveyances. Thus the system can present varying natural frequencies. ALSO Double drum hoists present a mass to the speed regulator that varies by a factor or 4 or 5 times. Hoist clutched in (two drums full of rope) to clutched out (single drum no rope)
A much better choice: The speed torque characteristics of large synchronous and induction motors are well suited for this application. Mine Hoists are stand alone machines that do not require the speed and accuracy required in steel and paper mills.
I would like to validate these statments using Matlab simulation. Speed regulators are a poor choice for Mine Hoist control. Mine hoists consist of distributed masses connected with very long springy ropes tied to the conveyances. Thus the system can present varying natural frequencies. ALSO Double drum hoists present a mass to the speed regulator that varies by a factor or 4 or 5 times. Hoist clutched in (two drums full of rope) to clutched out (single drum no rope)
A much better choice: The speed torque characteristics of large synchronous and induction motors are well suited for this application. Mine Hoists are stand alone machines that do not require the speed and accuracy required in steel and paper mills.
I would like to validate these statments using Matlab simulation. asynchrous motor, sycronous motor, motor characteristics, variable speed drive, mine hoist MATLAB Answers — New Questions

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