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US 2015/0318812 A1Published application
Electric machine
AssigneeRift Technology Limited
InventorJames O'DONNELL
Life of this patent
Estimating the term…
Abstract
An electric machine has a primary mechanical output or input, a plurality of electric sub-machine rotors each having an output or input shaft, a plurality of electric sub-machine stator magnets proximate the rotors, a drive train connecting each of the output or input shafts of the plurality of electric sub-machine rotors to simultaneously drive, or be driven by, the primary output shaft. Each sub-machine is selectively engaged or disengage depending on machine power.
Claims21
An electric machine comprising:
- a primary mechanical output or input;
- a plurality of electric sub-machines configured to selectively drive, or be driven by, the primary mechanical output or input respectively;
- a controller configured to:
- monitor a parameter of the electric machine indicative of the power of the electric machine;
- and,
- engage or disengage one or more of the plurality of electric sub-machines dependent upon the monitored parameter, so as to increase the number of sub-machines simultaneously driving, or being driven by, the primary mechanical output or input respectively at higher electric machine powers.
3 more elements
A method of operating an electric machine, comprising the steps of:
- providing an electric machine having a primary output or input and comprising a plurality of electric sub-machines configured to selectively drive, or be driven by, the primary mechanical output or input respectively;
- monitoring a parameter of the electric machine indicative of the power of the electric machine;
- and,
- engaging or disengaging one or more of the plurality of electric sub-machines dependent upon the monitored parameter, so as to increase the number of sub-machines simultaneously driving, or being driven by, the primary mechanical output or input respectively at higher electric machine powers.
1 more element
Dependencies are inferred from the claim text.