Adaptive algorithm to reduce acoustic noise and torque ripple in low-cost PM motors

This paper presents a method for torque ripple, acoustic noise and vibrations reduction in three-phase permanent magnet (PM) motors. Field oriented control (FOC) has been extended by compensation voltage in q-axis to minimize the ripple in angular velocity. Amplitude and phase of injected q-axis voltage harmonic are adjusted online by least mean squares (LMS) learning rule, based on the ripple in angular velocity. Proposed method significantly reduces impact of cogging torque and non-sinusoidal Back-EMF voltage on produced torque ripple, acoustic noise and vibrations. Effectiveness of proposed algorithm is experimentally verified by sound FFT analysis. Conventional techniques require a map of the cogging torque and Back-EMF shapes, while proposed method calculates the compensation q-axis voltage directly out of the ripple in angular velocity, which is great advantage in comparison to conventional methods.

[1]  G. Slemon,et al.  Reduction of cogging torque in permanent magnet motors , 1988 .

[2]  B. Widrow,et al.  Neural networks for self-learning control systems , 1990, IEEE Control Systems Magazine.

[3]  Duane C. Hanselman,et al.  Brushless Permanent-Magnet Motor Design , 1994 .

[4]  D.C. Hanselman,et al.  Minimum torque ripple, maximum efficiency excitation of brushless permanent magnet motors , 1994, IEEE Trans. Ind. Electron..

[5]  Joachim Holtz,et al.  Identification and compensation of torque ripple in high-precision permanent magnet motor drives , 1996, IEEE Trans. Ind. Electron..

[6]  Z. Zhu,et al.  Influence of design parameters on cogging torque in permanent magnet machines , 1997 .

[7]  Joachim Holtz,et al.  High-bandwidth current control for torque-ripple compensation in PM synchronous machines , 1998, IEEE Trans. Ind. Electron..

[8]  Nicola Bianchi,et al.  Design techniques for reducing the cogging torque in surface-mounted PM motors , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[9]  Fumio Harashima,et al.  A new approach for minimum-torque-ripple maximum-efficiency control of BLDC motor , 2000, IEEE Trans. Ind. Electron..

[10]  Scott D. Sudhoff,et al.  A multiple reference frame synchronous estimator/regulator , 2000 .

[11]  조성배,et al.  Reference Frame Approach for Torque Ripple Minimization of BLDCM over Wide Speed Range Including Cogging Torque , 2001 .

[12]  P. Mattavelli,et al.  Torque-ripple reduction in PM synchronous motor drives using repetitive current control , 2005, IEEE Transactions on Power Electronics.

[13]  T. Yabumi.  Reduction of Cogging Torque in Permanent Magnet Motors , 2007 .

[14]  I. Husain,et al.  Permanent Magnet Synchronous Motor Magnet Designs with Skewing for Torque Ripple and Cogging Torque Reduction , 2007, 2007 IEEE Industry Applications Annual Meeting.

[15]  P. Pillay,et al.  Cogging Torque Reduction in Permanent Magnet Machines , 2006, IEEE Transactions on Industry Applications.

[16]  Shucheng Wang.  BLDC Ripple Torque Reduction via Modified Sinusoidal PWM , 2008 .

[17]  R. Krishnan,et al.  Permanent Magnet Synchronous and Brushless DC Motor Drives , 2009 .

[18]  Iqbal Husain,et al.  Analytical model for predicting noise and vibration in permanent magnet synchronous motors , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[19]  Damien Flieller,et al.  An investigation of Adaline for torque ripple minimization in Non-Sinusoidal Synchronous Reluctance Motors , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[20]  Patrice Wira,et al.  A Self-Learning Solution for Torque Ripple Reduction for Nonsinusoidal Permanent-Magnet Motor Drives Based on Artificial Neural Networks , 2014, IEEE Transactions on Industrial Electronics.

[21]  Marek Lazor,et al.  Modified field oriented control for smooth torque operation of a BLDC motor , 2014, 2014 ELEKTRO.

[22]  Changliang Xia,et al.  Smooth Speed Control for Low-Speed High-Torque Permanent-Magnet Synchronous Motor Using Proportional–Integral–Resonant Controller , 2015, IEEE Transactions on Industrial Electronics.

[23]  Valéria Hrabovcová,et al.  Suppression of Low-order Current Harmonics in AC Motor Drives via Multiple Reference Frames Based Control Algorithm , 2015 .

[24]  Mark Yim,et al.  Anticogging: Torque ripple suppression, modeling, and parameter selection , 2016, Int. J. Robotics Res..