Patent ID: 11863026
Assignee: ROLLS-ROYCE ELECTRICAL NORWAY AS
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A rotor for an electric machine comprising:
a surface mount permanent magnet rotor; and
a rotor sleeve, the rotor sleeve comprising:
filaments in a matrix material;
an inner layer comprising one or more of glass, aramid, Polybenzoxazole, nylon and Dynema fiber wound filaments oriented at between ±30° and ±60° to an axis of the rotor, the filaments of the inner layer having a first tensile modulus of elasticity; and
an outer layer of wound carbon fiber filaments wound at approximately 90° to the axis of the rotor around the inner layer, the filaments of the outer layer having a second tensile modulus of elasticity higher than the first modulus of elasticity.