ROTATING ELECTRICAL MACHINE, SET OF STATOR CORE AND ROTOR CORE, METHOD OF MANUFACTURING ROTATING ELECTRICAL MACHINE, METHOD OF MAKING SHEET OF ISOTROPIC ELECTRICAL STEEL FOR STATOR AND SHEET OF ISOTROPIC ELECTRICAL STEEL FOR ROTOR, METHOD OF MAKING STATOR AND ROTOR AND SET OF SHEETS OF ISOTROPIC ELECTRICAL STEEL Russian patent published in 2024 - IPC H02K1/02 H01F1/147 

FIELD: electrical engineering.

SUBSTANCE: rotary electrical machine comprises a stator, a rotor and a casing which accommodates the stator and the rotor, wherein at least one of following conditions 1 and 2 is satisfied. Condition 1: thermal conductivity A of the sheet of isotropic electrical steel used for the stator core is in range from 12 to 35 W/(m⋅K), thermal conductivity B of the sheet of isotropic electrical steel used for the rotor core ranges from 10 to 33 W/(m⋅K) and A > B. Condition 2: thermal diffusivity A1 of the sheet of isotropic electrical steel used for the stator core is in range of 3.0 × 10^-6 to 9.0 × 10^-6 m²/s⋅W/(m⋅K), thermal diffusivity B1 of the sheet of isotropic electrical steel used for the rotor core is in range of 2.5 × 10^-6 to 8.5 × 10^-6 m²/s⋅W/(m⋅K) and A1 > B1.

EFFECT: higher efficiency of machine operation.

24 cl, 1 dwg