Abb Schweiz Ag

Michele Maggi

Alessandro Castagnini

Pietro Savio Termini

Giovanni Tartaglino

Jere Kolehmainen

Tero Känsäkangas

Giulio Secondo

Giuseppe Moioli

The present disclosure relates to a fluid cooled electric machine, and a method for producing the same. The fluid cooled electric machine includes a shaft extending along an axis of the machine, a rotor rotationally coupled to the shaft, a stator radially surrounding the rotor and having a stator core, first and second end shields mounted at opposite ends of the electric machine in the axial direction, and a fluid cooling system for cooling the electric machine, the stator core having a plurality of axial cavities, the fluid cooling system including first and second collector bodies, each including a plurality of collector chambers for the fluid, and a plurality of pipes.

Fluid cooled electric machine

A rotor for a synchronous reluctance machine includes a rotor core having a plurality of magnetically conductive laminations stacked in a rotor axial direction. The magnetically conductive laminations include cut-out portions forming a plurality of flux barriers radially alternated by flux paths portions, where at least one of the flux barriers includes a ridge connecting two flux paths portions adjacent to the at least one flux barrier. The at least one flux barrier has a first barrier mid-line, which is a line that is equidistant from both sides of the at least one flux barrier. The bridge has a second bridge mid-line, which is the line that is equidistant from both sides of the bridge. The first and second mid-lines intersect. The bridge has a first and second symmetry axis and is non-symmetrical with respect to at least one of the first and second symmetry axis.

Rotor for rotating electric machines having flux barriers arranged among bridges

A rotor for an interior permanent magnet machine (IPM), comprising a rotor core having a plurality of magnetically conductive laminations stacked in a rotor axial direction. The magnetically conductive laminations comprise cut-out portions forming a plurality of flux barriers (FB) radially alternated by flux paths (FP), at least a first part of the flux barriers (FB) housing permanent magnets, at least a second part of the flux barriers (FB) being filled with an electrically conductive and magnetically non-conductive material creating a cage inside the rotor core. The rotor further includes a first and a second short circuit ring positioned at the opposite ends of the rotor core, the first short circuit ring being different from the second short circuit ring.

Permanent magnet rotor for rotating electric machines and method for manufacturing such rotor

Growing community of inventors

Vittuone, Italy

Michele Maggi