Amplification of Single Mechanical Fault Signatures Using Full Adaptive PMSM Observer

作者：Masmoudi Mohamed Lamine; Etien Erik; Moreau Sandrine; Sakout Anas

来源：IEEE Transactions on Industrial Electronics, 2017, 64(1): 615-623.

DOI：10.1109/TIE.2016.2599498

• Adaptive observer design
• fault diagnosis
• permanent-magnet synchronous machine (PMSM)
• signature amplification
• single mechanical fault

This paper presents a localized mechanical fault detection method using a full adaptive permanent-magnet synchronous machine (PMSM) observer in a d/q reference frame. It appears that the fault sensitivity of PMSM stator currents and rotor speed measurements is very low with regard to single mechanical faults. That is why an amplification of single mechanical fault signatures in frequency domain is proposed by adjusting the adaptive PMSM observer gains. To study the influence of the adaptive PMSM observer gains on fault signatures, the observer model is first of all linearized at an operating point. Then, the static gain, the resonance, and the quality factor Q of different transfer functions are analyzed. A dedicated experimental setup based on an original mechanical fault emulator and a 7.8 kW PMSM drive is designed to validate the simulation results. The simulation and the experimental results show that the proposed method is effective to amplify single mechanical fault signatures and the calculated fault indicator.

• 出版日期2017-1