Comminuting machine drive system
AssigneeHarris Waste Management Group, Inc.
InventorJavier Herrera
Life of this patent
Estimating the term…
Abstract
A comminuting machine includes a frame, a comminuting rotor coupled to the frame, and a rotary drive coupled to the rotor. The rotary drive including a controller, a multi-phase motor connected to the controller, a set of contactors disposed between the controller and the multi-phase motor for selectively providing driving motive force to the multi-phase motor, and at least one rheostat disposed between the controller and the multi-phase motor, in parallel with the first set of contactors, for selectively providing a stopping resistance to the multi-phase motor to effect frictionless braking of the comminuting rotor, wherein the controller is configured to operate the set of contactors and the at least one rheostat to single phase lines of the multi-phase motor for providing the stopping resistance.
Claims21
A comminuting machine comprising:
- a frame;
- a comminuting rotor coupled to the frame;
- and
- a rotary drive coupled to the comminuting rotor, the rotary drive including
- a controller,
- a multi-phase motor connected to the controller,
- a set of contactors disposed between the controller and the multi-phase motor for selectively providing driving motive force to the multi-phase motor, and
- at least one load disposed between the controller and the multi-phase motor, and in parallel with the set of contactors,
- wherein the controller is configured to operate the set of contactors that are disposed in parallel with the at least one load to reverse a flowing magnetic field in the multi-phase motor through the at least one load.
A comminuting machine comprising:
- a frame;
- a comminuting rotor coupled to the frame;
- and
- a rotary drive coupled to the comminuting rotor, the rotary drive including
- a multi-phase motor,
- a controller connected to the multi-phase motor,
- a set of contactors disposed in the connection between the multi-phase motor and the controller such that each phase of the multi-phase motor includes a respective contactor, and
- a load disposed on each phase of the multi-phase motor in-line with a respective contactor of the set of contactors,
- wherein the controller is configured to operate the set of contactors to reverse a magnetic field in the multi-phase motor through the loads disposed on each phase of the multi-phase motor.
A method for providing frictionless braking of a comminuting rotor of a comminuting machine where the comminuting rotor is driven by a multi-phase motor, the method comprising:
- controlling, with a controller of the comminuting machine, a set of contactors disposed between the controller and the multi-phase motor where the set of contactors selectively provide driving motive force to the multi-phase motor,
- controlling, with the controller, at least one load disposed between the controller and the multi-phase motor, in parallel with the set of contactors, for selectably reversing a flowing magnetic field of the multi-phase motor, and
- operating, with the controller, the set of contactors that are disposed in parallel with the at least one load to reverse the flowing magnetic field in the multi-phase motor through the at least one load to effect the frictionless braking of the comminuting rotor.
Dependencies are inferred from the claim text.