Efficient control of low inductance brushless DC motors based on LC filtering and active damping
DOI:
https://doi.org/10.24425/aee.2025.153013Abstract
Brushless DC motors (BLDC) present several technical advantages with respect to conventional permanent magnets synchronous motors. These advantages include higher rotational speeds, reduced construction complexity and simpler control strategies. This paper discusses a cost-effective control strategy for BLDC motors characterized by low stator inductance. The proposed technique is based on an LC filter inserted between the inverter output and the motor. The filter capacitors are controlled such that three DC voltages are applied to the stator terminals. An active damping approach is used to control stator currents and prevents voltage oscillations. Compared with existing solutions, this technique simplifies the hardware implementation of such a drive system and offers a notable reduction in the switching frequency with minimal values of the magnetic elements. In addition, high frequency torque ripples are significantly reduced. The design procedure of this controller is presented in this paper and the performances are compared with the conventional control technique.References
[1] Mousmi A., Abbou A., El Houm Y., Trapezoidal control of Brushless DC motor based on DSP F28335, International Conference on Wireless Technologies, Embedded and Intelligent Systems, Fez, Morocco (2017), DOI: 10.1109/WITS.2017.7934602.
[2] Mohanraj D., Aruldavid R., Verma R. et al., A Review of BLDC Motor: State of Art, Advanced Control Techniques, and Applications, IEEE Access, vol. 10, pp. 54833–54869 (2022), DOI: 10.1109/ACCESS.2022.3175011.
[3] Seo M.K., Lee T.Y., Ko Y.Y., Kim Y.J., Jung S.Y., Irreversible demagnetization analysis with respect to winding connection and current ripple in brushless DC motor, IEEE Transaction on Applied Superconductivity, vol. 28, no. 3, pp. 1–4 (2018), DOI: 10.1109/TASC.2018.2792449.
[4] Krishnan R., Permanent Magnet Synchronous Brushless DC Motor Drives, CRC Press (2010).
[5] Fang J., Zhou X., Liu G., Instantaneous Torque Control of Small Inductance Brushless DC Motor, IEEE Transaction on Power Electronics, vol. 27, no. 12, pp. 4952–4964 (2012), DOI: 10.1109/TPEL.2012.2193420.
[6] Li W., Fang J., Li H., Tang J., Position Sensorless Control without Phase Shifter for High-Speed BLDC Motors with Low Inductance and Non-ideal Back EMF, IEEE Transaction on Power Electronics, vol. 31, no. 2, pp. 1354–1366 (2016), DOI: 10.1109/TPEL.2015.2413593.
[7] Feng J., Liu K., Wang Q., Scheme based on buck converter with three phase H-bridge combinations for high speed BLDC motors in aerospace applications, IET Electric Power Applications, vol. 12, no. 3, pp. 405–414 (2018), DOI: 10.1049/iet-epa.2017.0615.
[8] Li H., Li W., Ren H., Fault-Tolerant Inverter for High-Speed Low-Inductance BLDC Drives in Aerospace Applications, IEEE Transaction on Power Electronics, vol. 32, no. 3, pp. 2452–2463 (2017), DOI: 10.1109/TPEL.2016.2569611.
[9] Feng Z., Ramesh RR., Ebrahimi S. et al., Control Strategy for Torque Ripple Reduction in Brushless DC Motors with 180-Degree Commutation, IEEE 6th Global Power, Energy and Communication Conference, Budapest, Hungary (2024), DOI: 10.1109/GPECOM61896. 2024.10582640.
[10] Lee J., Lim G.C., Ha J.I., Pulse Width Modulation Methods for Minimizing Commutation Torque Ripples in Low Inductance Brushless DC Motor Drives, IEEE Transactions on Industrial Electronics, vol 70, no. 5, pp. 4537–4547 (2023), DOI: 10.1109/TIE.2022.3189104.
[11] Valle R.L., De Almeida P.M., Fogli G.A., Ferreira A.A., Barbosab P.G., Simple and Effective Digital Control of a Variable-Speed Low Inductance BLDC Motor Drive, IEEE Access, vol. 8, pp. 13240–13250 (2020), DOI: 10.1109/ACCESS.2020.2966437.
[12] Pandey M.K., Tripathi A., Dwivedi B., A technique to minimize the effect of current harmonics in a brushless dc motor drive, IEEE 10th Conference on Industrial Electronics and Applications, Auckland, New Zealand, pp. 9–21 (2015), DOI: 10.1109/ICIEA.2015.7334199.
[13] Chaudhari P.S., Patil S.L., Reduction in Harmonics of BLDC Motor Drive Using Controlled LC Filter, Electric Power Components and Systems, vol. 46, pp. 1686–1703 (2018), DOI: 10.1080/15325008.2018.1511007.
[14] Channegowda P., John V., Filter Optimization for Grid Interactive Voltage Source Inverters, IEEE Transactions on Industrial Electronics, vol. 57, no. 12, pp. 4106–4114 (2010), DOI: 10.1109/TIE.2010.2042421.
[15] Drozdowski P., Modelling of BLDCM with a double 3-phase stator winding and back EMF harmonics, Archives of Electrical Engineering, vol. 64, no. 1, pp. 53–66 (2015), DOI: 10.1515/aee-2015-0006.
[16] Baszynski M., Torque ripple reduction in BLDC motor based on a PWM technique for open-end winding, Archives of Electrical Engineering, vol. 70, no. 1, pp. 5–23 (2021), DOI: 10.24425/aee.2021.136049.
[17] Dannehl J., Fuchs F.W., Hansen S., Thogersen P.B., Investigation of active damping approaches for PIbased current control of grid-connected pulse width modulation converters with LCL filters, IEEE Transaction on Industry Applications, vol. 46, no. 4, pp. 1509–1517 (2010), DOI: 10.1109/TIA.2010.2049974.
[18] Parker S.G., McGrath B.P., Holmes D.G., Regions of Active Damping Control for LCL Filters, IEEE Transaction on Industry Applications, vol. 50, no. 1, pp. 424–432 (2014), DOI: 10.1109/ECCE.2012.6342412.
[19] Landau I.D., Zito G., Digital control systems, Springer-Verlag (2006).
[20] Buso S., Mattavelli P., Digital Control in Power Electronics, Morgan and Claypool (2006).
[21] Levine W.S., The Control Handbook, CRC press, IEEE press (2000).
[22] Yazdani A., Irevani R., Voltage Source Converters in Power Systems, John Wiley & Sons (2010).
Downloads
Published
How to Cite
Issue
Section
