The magnetic properties of stators are a key criterion for the efficiency in electric drives and strongly influence the motor performance and range of electric cars. Important parameters are power loss, permeability and polarisation.
Process-related influences such as punching, packaging and housing strongly affect the magnetic properties. Studies show that the power loss can more than double over the individual process steps from the "electrical sheet to the stator in the housing". This can ultimately lead to e-drives not achieving the required key figures in the "end-of-line test".
BROCKHAUS MESSTECHNIK has developed test systems and sensors with which the magnetic properties can be efficiently and reliably measured in each production step from the sheet material to the stator in the housing.
The measurement data is used to optimise processes and, with the help of inline production control, to sort out possible defective stators at an early stage and thus avoid subsequent costs.