Nidec Psa Emotors

Ioan Deac

Juan Wang

Hussain Nouri

Guillaume Tardy

Jean Baptiste Roux

Tahar Hamiti

Diana Fantuz

The present invention relates to an end shield () for a rotary electric machine, including one or more feed channels () for feeding a coolant supplied from a channel formed in a rotor lamination stack () or in a shaft of the rotor () or between the rotor lamination stack and the shaft, wherein at least one feed channel () includes a cross-sectional constriction (), the cross-section of the feed channel decreasing and then increasing in a radial direction relative to the rotational axis (X) of the machine.

End shield and rotor for a rotary electric machine

The rotary electric machine () comprises a casing (), a stator () comprising a stator body () secured within the casing and comprising first () and second () longitudinal end faces, notches () arranged and extending longitudinally within the stator body between the first and second longitudinal end faces, a coil passing longitudinally through the stator body through the notches and comprising first () and second () coil head assemblies extending in projection from at least one of the first and second longitudinal end faces of the stator body, a first chamber () in the shape of a ring portion arranged around the first coil head assembly and a second chamber () in the shape of a ring portion arranged around the second coil head assembly, the first and second chambers being in fluid communication with one another by the notches, one among the first and second chambers being a coolant inlet chamber and the other among the first and second chambers being a coolant discharge chamber such that a flow of coolant between the first and second annular chambers is forced into the notches while the rotary electric machine is in operation.

Rotary electric machine with improved stator cooling

The present invention relates to an end shield () for a rotary electric machine, including one or more feed channels () for feeding a coolant supplied from a channel formed in a rotor lamination stack () or in a shaft of the rotor or between the rotor lamination stack and the shaft, wherein at least one feed channel () has a spray portion () for spraying the coolant, said spray portion () being placed in the last two thirds of the feed channel (), when considered in the direction in which the coolant circulates.

The invention relates to a rotating electrical machine () comprising a housing () including two bearings (), a rotor shaft () mounted to rotate freely in the housing via the bearings, a rotor () clamped to the rotor shaft so as to rotate the rotor shaft and comprising first () and second () axial end faces, and a cooling circuit comprising a coolant supply duct () arranged coaxially in the rotor shaft, and a radially oriented feed duct () arranged in the rotor shaft and in fluid communication with the supply duct and the rotor, characterized in that the cooling circuit further comprises a cooling chamber () in fluid communication with the feed duct, extending axially between the rotor and the rotor shaft, opening onto the first and second axial end faces and delimited radially by an angular portion of an external surface () of the rotor shaft and an angular portion () of an internal surface of the rotor, the two portions extending opposite and at a distance from one another.

Rotating electrical machine having a circuit for cooling magnets by the shaft

The rotating electric machine () having a housing comprising first () and second () clamp members and an inner face, a stator comprising a stator body () clamped between the first and second clamp members and having an outer face extending opposite the inner face together defining an annular cooling chamber () surrounding the stator body, the stator body comprising a longitudinal stack of stator sheets (), each stator pack of which comprises an annular core having an outer circumference and at least two radially centrifugal protuberances projecting from the outer circumference of the annular core, in the annular cooling chamber, and diametrically opposite one another, the stator sheets of the longitudinal stack being identical and two adjacent stator sheet of the longitudinal stack being angularly offset from each other such that the respective protuberances thereof do not extend opposite one another.

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POISSY, France

Ioan Deac