Analysis and Compensation of Rotor Position Detection Errors in DC-FRBLM

This paper presents a compensation method to reduce rotor angle detection errors in the DC-FRBLM. The proposed approach involves extracting the fundamental components from the output signals of a magnetic encoder to track the exact rotor angle. By mitigating errors arising from mechanical installation deviations and magnetic field harmonics, the accuracy of detected rotor angle is significantly improved. The impact of estimated angle errors is analyzed in detail, highlighting the need for the compensation method. Experimental validations are conducted to demonstrate the effectiveness of the proposed approach, resulting in enhanced performance of current control. The research contributes to a deeper understanding of rotor angle detection in bearingless motors.