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A Robust Method for Estimation of Inductances at Standstill Considering Magnetic Saturation | IEEE Conference Publication | IEEE Xplore

A Robust Method for Estimation of Inductances at Standstill Considering Magnetic Saturation


Abstract:

This paper examines the effect of magnetic saturation and cross saturation on the d-q axis inductance in an interior permanent magnet synchronous motor (IPMSM) using a mo...Show More

Abstract:

This paper examines the effect of magnetic saturation and cross saturation on the d-q axis inductance in an interior permanent magnet synchronous motor (IPMSM) using a modified machine model that incorporates the saturation and cross saturation effects. A high-frequency injection (HFI) based practical and robust method is proposed to create the 3D/2D mapping of inductances for all operating regions. In addition, for motor applications where rotor is not accessible to lock it, a unique current sequence injection is presented such that, with the resultant torques, maintains the rotor stationary throughout the estimation process. The proposed method effectively eliminates the impact of inverter non-linearity on inductance estimation, and this is further discussed. The proposed framework has experimented on the IPMSM motor. The experimental results show that the proposed strategy accurately estimates the d-q inductances of the motor without actually locking the rotor.
Date of Conference: 15-18 May 2023
Date Added to IEEE Xplore: 06 September 2023
ISBN Information:
Conference Location: San Francisco, CA, USA

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