Research on commutation fluctuation self-adaptive control suppression strategy for brushless DC motor

Huang, Haibo

doi:10.1109/wcica.2012.6357880

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…In order to reduce the torque ripples, DTC [3,4], adaptive control [5], hysteresis current control, hybrid PWM chopper based overlapping and observers [6][7][8] have been proposed. Among these methods, DTC not only controls the torque directly but also has the advantages of simple structure, fast torque response and good robustness.…”

Section: Introductionmentioning

confidence: 99%

Torque Ripple Suppression Control of Bearingless Brushless Dc Motor in Wide Speed Regulation Range

Sun¹,

Yuan²,

Yang³

2018

PIER C

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Abstract-Bearingless brushless DC (BBLDC) motor in the flywheel energy storage system has advantages of low energy consumption, high critical speed and better speed adjustment performance. However, torque ripple exists inevitably due to the current commutation of the BBLDC motor and the wide range of speed changes when the flywheel energy storage system charges and discharges. In this frame, an approach of combining the direct torque control (DTC) with the current prediction control (CPC) is proposed to suppress torque ripple in wide speed regulation range. In this paper, the mathematical model of the BBLDC motor is given, and the principle of DTC scheme is introduced. On the basis of analyzing the causes of commutation torque ripple when using DTC scheme, CPC scheme is employed to minimize the commutation torque ripple by controlling the changes of phase current during commutation. During the non-commutation, the DTC is selected, and the CPC is selected during the commutation. Results show that the proposed approach is feasible, and torque ripple is effectively suppressed both in high speed and low speed. Moreover, this method has no effect on the suspension performance.

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