MUMBAI, India, June 24 -- Intellectual Property India has published a patent application (202617060426 A) filed by Robert Bosch Gmbh on May 12, 2026, for Method For Determining An Electrical Resistance Value Of At Least One Phase Winding Of An Electric Machine, Device For Driving An Electric Machine, And Electric Drive System.
Inventors include Hahn, Christian; Paulus, Sebastian; Chen, Lei; Xu, Yanhui; and Demir, Taner.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: The invention relates to a method for determining a resistance value of at least one phase winding of an electric machine, comprising impressing a first current into the electric machine and impressing at least one second current into the electric machine, wherein a current intensity of the first current differs from that of the at least one second current; determining a first current value (I1) and a first voltage value (U1) with respect to the first impressed current, and determining a second current value (I2) and a second voltage value (U2) with respect to the at least one second impressed current; and determining the resistance value of the at least one phase winding as a function of the first current value (I1), the first voltage value (U1), the second current value (I2) and the second voltage value (U2).
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