The performance of rotor position estimation of interior permanent magnet synchronous motor (IPMSM) tends to be negatively impacted by inverter and motor nonlinearities. In low voltage systems, the on-voltage drop of power electronic switches has a significant impact. This paper focuses on compensating nonlinearities in a 48V motor drive intended for hybrid vehicle powertrains with belt-driven starter-generator (BSG). A real-time voltage compensation method is introduced and saturation is addressed with inductance measurements. The effectiveness of the proposed methods is validated and evaluated by the experimental results.
Compensation of Nonlinear Effects in Automotive 48V Position Sensorless IPMSM Drive Systems
2018-06-01
729358 byte
Conference paper
Electronic Resource
English
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