Composite Rotor Sleeve for Electromechanical Machines

The patent merges the damper bars and end-plates into a single integrated composite sleeve structure. The sleeve contains conductive elements (such as copper wires or conductive particles) embedded within a non-conductive matrix material, eliminating the need for separate damper bars and copper end-plates that require brazing operations. This integration reduces the number of components and assembly steps while maintaining the electrical connection function of the damper circuit.

The patent employs composite materials for the sleeve structure, combining conductive elements (copper wires, particles, or flakes) with a non-conductive matrix material (such as epoxy resin, plastic, or ceramic). This composite construction provides both structural support and electrical conductivity within a single component, replacing the traditional separate metal parts and reducing overall weight while maintaining functional performance.

The patent merges the damper circuit function into a continuous sleeve structure that surrounds the rotor core without creating discrete slots or interruptions. This continuous structure eliminates the flux pinch points that occur at damper bar locations in traditional designs, allowing electromagnetic flux to communicate more efficiently between the rotor and stator assemblies.

The composite sleeve provides a more homogeneous structure compared to the discontinuous damper bars in slots. The embedded conductive elements are distributed throughout the matrix material, creating a uniform structure that does not create localized flux interruptions or pinch points, thereby improving electromagnetic flux communication efficiency.

The patent merges multiple discrete components (damper bars, copper end-plates, brazing materials) into a single integrated composite sleeve. This eliminates the need for multiple brazing operations, reducing manufacturing complexity, assembly time, and associated costs while maintaining the electrical connection function of the damper circuit.

The patent replaces the mechanical brazing process with a composite material fabrication process. Instead of joining separate metal parts through brazing, the conductive elements are embedded within the matrix material during composite fabrication, which can be done through molding or curing processes. This substitution eliminates the need for specialized brazing equipment and operations, reducing manufacturing cost.