September 26, 2023
What is grain oriented steel used for?
Electrical steel is one of the core magnetic materials in EV traction motor. In terms of high power density and torque density for the EV traction motors. Traditional Non Grain-Oriented (NGO) silicon steel is difficult to satisfy these requirements because of limited saturation flux density and magnetic permeability.
This paper mainly presents that a novel thin-anisotropic Grain-Oriented (GO) silicon steel is used in high-speed (up to 14500rpm) traction motors after deeply analysing magnetic saturation, power loss, thermal conductivity and mechanical property of a traction motor with high-frequency (50Hz-400Hz) and high-torque running status. It applies a combination design between NGO and GO steel in order to avoid the low magnetic permeability in the transverse direction.
