Application of Star-Point Voltage Exploiting Sensorless Techniques to Low-Power PMSMs

In the field of sensorless control of Permanent Magnet Synchronous Motors (PMSMs), different techniques based on machine anisotropies have been developed. This work analyzes sensorless techniques that exploit the star-point voltage of PMSMs at the aim of evaluating the applicability of such techniques by analyzing the machine inductances matrix. After a brief mathematical description of the technique, a characterization of the machine anisotropy information extracted from the star-point voltage has been performed. Finally, experimental results conducted on a custom PMSM are presented in order to validate the proposed theory.

[1]  Alfio Consoli,et al.  Zero frequency rotor position detection for synchronous PM motors , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[2]  C. Mantala,et al.  Direct Flux Control (DFC): A New Sensorless Control Method for PMSM , 2012 .

[3]  Y. Iwaji,et al.  Neutral Point Voltage Model of Stator Windings of Permanent Magnet Synchronous Motors with Magnetic Asymmetry , 2018, 2018 XIII International Conference on Electrical Machines (ICEM).

[4]  Matthias Nienhaus,et al.  Analysis and Exploitation of the Star-Point Voltage of Synchronous Machines for Sensorless Operation , 2019 .

[5]  Matthias Nienhaus,et al.  Comparison of Anisotropy Signals for Sensorless Control of Star-Connected PMSMs , 2019, 2019 IEEE 10th International Symposium on Sensorless Control for Electrical Drives (SLED).

[6]  Alfio Consoli,et al.  A new zero frequency flux position detection approach for direct field oriented control drives , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[7]  Peilin Xu,et al.  Novel Square-Wave Signal Injection Method Using Zero-Sequence Voltage for Sensorless Control of PMSM Drives , 2016, IEEE Transactions on Industrial Electronics.

[8]  Francesco Cupertino,et al.  Analysis and Application of the Direct Flux Control Sensorless Technique to Low-Power PMSMs , 2020 .

[9]  Mengqi Wang,et al.  Online Stator Inductance Estimation for Permanent Magnet Motors Using PWM Excitation , 2019, IEEE Transactions on Transportation Electrification.

[10]  Chawanakorn Mantala.  Sensorless control of brushless permanent magnet motors , 2013 .