Rotor interlocking elements and method for their manufacturing
AssigneeDana Tm4 Italia S.R.L.
InventorsWalter FAEDO, Pierpaolo ZULPO
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Abstract
Methods and systems are disclosed for reducing ripple torque associated with internal bridges arranged within one or more barriers of a rotor lamination stack and increasing mechanical strength when the rotor lamination stack is configured without internal bridges. In one example, a rotor lamination stack includes at least one interlocking element arranged in one or more barriers. In another example, the at least one interlocking elements may be fabricated individually and independent of the rotor lamination stack or by employing the rotor lamination stack as a mold.
Claims20
An electric motor system, comprising:
- a rotor lamination stack comprising at least one interlocking element arranged in one or more barriers, the at least one interlocking element being non-metallic and non-magnetic.
A method for manufacturing an interlocking element of a rotor lamination stack, comprising:
- inserting the interlocking element within a barrier of the rotor lamination stack, the interlocking element being fabricated independent of the rotor lamination stack or by employing the rotor lamination stack as a mold to fabricate and position the interlocking element within the barrier, a material of the interlocking element being non-magnetic and non-metal.
A motor system, comprising:
- a rotor comprising a generally cylindrical rotor body with an inner surface and an outer surface, the rotor being arranged from a rotor lamination stack that includes a magnetic portion comprising a plurality of segments and a non-magnetic portion comprising a plurality of barriers and a plurality of interlocking elements wherein at least one interlocking element is arranged in one or more barriers;
- a stator with a plurality of stator windings electrically coupled to a control circuit of a plurality of circuits including at least one transistor;
- and
- an inverter electrically coupled to an electrical power source wherein executable instructions are configured, stored, and executed in at least one memory by at least one processor of the inverter to apply a current to the plurality of stator windings.
Dependencies are inferred from the claim text.