A Novel Direct Torque Control of Fault Tolerant Three-Phase Four-Switch Inverter Brushless DC Motor

Abstract:

Because of the reliability requirement for the motor driving system in practical application, and based on analysis of the working principle of a fault-tolerant inverter, the direct torque control (DTC) for brushless direct current motor (BLDCM) fed by four-switch three-phases inverter (FSTPI) when the inverter faults is widely studied. According to the characteristics of (BLDCM), the voltage space vector for BLDCM-DTC fed by FSTPI is redefined due to the dissymmetric voltage space vector of TPFSI. To reduce the number of power device switching, the implementation method of four-switch SVPWM with seven-segment scheme was presented. Therefore, the system model is established as a result of the detailed analysis of voltage space vector and the control principle of the BLDCM-DTC without flux linkage observation fed by FSTPI. The validity and effectiveness of the proposed scheme have been verified through the simulation and experimental results.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 697-700
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.697
• Online since: September 2014
• Authors: Song Lin Wang*, Shun Yi Xie
• Keywords: Brushless Dc Motor (BLDCM), Direct Torque Control (DTC), Four-Switch Three-Phase Inverter (FSTPI), SVPWM

References

[1] J.W. Shao. An improved microcontroller-based sensorless brushless DC (BLDC) motor drive for automotive applications: IEEE Transactions on Industry Applications, Vol. 42(2006) No. 5, pp.1216-1221.

DOI: 10.1109/tia.2006.880888

[2] F. Aghili. Fault-tolerant torque control of BLDC motors: IEEE Transactions on Power Electronics, Vol. 26(2011) No. 2, pp.355-363.

DOI: 10.1109/tpel.2010.2060361

[3] C.L. Xia Y.W. Xiao, W Chen, et al. Three effective vectors-based current control scheme for four-switch three-phase trapezoidal brushless DC motor: IET Electr. Power Appl, Vol. 7(2013) No7, pp.566-574.

DOI: 10.1049/iet-epa.2013.0030

[4] Q. Ful, H. Lin. Sliding mode driving strategy for four-switch three-phase brushless DC motor: SICE-ICASE International Joint Conference(Busan, 2006), pp.696-701.

DOI: 10.1109/sice.2006.315626

[5] C.T. Lin, C.W. Hung and C.W. Liu. Sensorless control for four-switch three-phase brushless DC motor drives. IEEE Industry Applications Conference Forty-First IAS Annual Meeting(Tampa, 2006), pp.2048-2053.

DOI: 10.1109/ias.2006.256817

[6] A.H. Niasar, A. Vahedi and H. Moghbelli. Low-cost sensorless control of four-switch brushless DC motor drive with direct back-EMF detection: Journal of Zhejiang University (SCIENCE A), Vol. 10(2009) No. 2, pp.201-208.

DOI: 10.1631/jzus.a0820097

[7] S.B. Ozturk, W.C. Alexander and H.A. Toliyat. Direct torque control of four-switch brushless DC motor with non-sinusoidal back EMF: IEEE Transactions on Power Electronics, Vol. 25(2010) No. 2, pp.263-270.

DOI: 10.1109/tpel.2009.2028888