Patent ID: 9130437
Filing Date: 2015-09-08
Classification: H02K,Y10T

Abstract:
1. A method of manufacturing a multilayer metal wire or ribbon bandage over an operational zone of a rotor of an electrical machine, wherein the operational zone of the rotor comprises any of following elements: a) permanent magnets; b) a squirrel cage; c) a laminated core; d) a laminated core with slots; e) an electrical winding; and where the metal wire or ribbon bandage possesses the combination of properties: a) the metal wire or ribbon bandage is restricted by side rings, which are either separate parts of the rotor or inseparable parts of the rotor; b) the metal wire or ribbon bandage is carried out with a round, flat, rectangular or hexagonal wire or a ribbon of a magnetically permeable material and the wire or ribbon is provided with an organic or inorganic insulation or coating in accordance with an expected maximum operating temperature; c) winding with the metal wire or ribbon is conducted in layers without overlapping between turns and either with axial mechanical contact between turns, in case of the metal wire, or either with axial mechanical contact or with a minimal axial gap between turns in case of the metal ribbon; and wherein the method of manufacturing the metal wire or ribbon bandage comprises a combination of steps: a) providing said rotor having an operational zone and side rings; b) fixation of a first end of the metal wire or ribbon, wherein the fixation is carried out by means of one of methods: 1) fixation in the operational zone of the rotor, comprising the steps of: 2) fixation in a slot in the operational zone of the rotor, comprising the steps of: 3) fixation outside the operational zone of the rotor, comprising the steps of: c) winding under pretension with metal wire or ribbon in the operational zone; d) fixation of the metal wire or ribbon after finishing the winding without loss of pretension in the metal wire or ribbon, where this fixation is carried out by means of: or fixing the second end of the metal wire or ribbon outside the operational zone.