Torque ripple reduction of the BLDC motor using a modified 3-phase conduction method

Kim, SeungJun; Park, JunHwi; Lee, Dong-Hee

doi:10.1109/ecti-ncon.2018.8378277

Cited by 7 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LC filter's series inductance helps to reduce torque ripples. It resists rapid current changes caused by electronic commutation, thus reducing torque output fluctuations [2,3]. The BLDC includes the power supply, a three-phase voltage source inverter, the three phase BLDC motor, and the proposed filter.…”

Section: Bldc Structurementioning

confidence: 99%

See 1 more Smart Citation

Simplified Control for Torque and Speed Ripple Mitigation in Brushless DC Motors

2024

ijSmartGrid

View full text Add to dashboard Cite

Brushless DC motors are characterized by their reliability, low inertia, fast response, and low maintenance. Unlike the conventional DC machines, the BLDC uses permanent magnets in place of brushes, resulting in lower maintenance requirements. Brushless DC motors produce constant torque under ideal conditions, with a trapezoidal back electromotive force (emf). Utilizing power electronic components for commutation in brushless DC motors causes harmonics in the armature current leading to large output torque ripples. This paper proposed a simplified circuit to minimize torque and speed waveform ripples. The circuit incorporates a simple filter, PI controller, and PWM, eliminating the need for a high computational processor. This enables easy execution and reduces the control circuit's energy footprint, resulting in low running costs with a simple design. The proposed circuit was simulated using PSIM software and the results confirm the ability of the circuit to minimize the torque and speed ripples to acceptable values for real and sensitive applications.

show abstract

Section: Bldc Structurementioning

confidence: 99%

“…Advanced motor control strategies encompass a range of techniques such as adaptive control, predefined current waveform, injection of harmonics, estimation techniques, observation methods, disturbance filtration, current control, torque reduction during commutation, and automated self-configuration systems [2].…”

Section: Introductionmentioning

confidence: 99%

Simplified Control for Torque and Speed Ripple Mitigation in Brushless DC Motors

2024

ijSmartGrid

View full text Add to dashboard Cite

show abstract

“…In Refs. [18,19], a new simple method was presented to suppress commutation torque ripple by applying different modulation duty cycles to each phase windings to control the commutation time. The effect of direct current-link (DC-link) voltage on commutation time is studied in Ref.…”

Section: Introductionmentioning

confidence: 99%

Coordinated suppression commutation torque ripple for brushless DC motor with commutation time

Wan

Huang

Zeng

et al. 2022

IET Electric Power Appl

View full text Add to dashboard Cite

A commutation torque ripple suppression strategy for the brushless DC motor (BLDCM) with commutation time is proposed. First, a torque model considering back electromotive force (back-EMF) variation is presented, and the cause of commutation torque ripple is analysed. The results show that the commutation torque ripple of BLDCM is inevitable even if the non-commutation current remains steady. On this basis, the influence and quantitative relationships of non-commutation current and commutation time on commutation torque ripple are studied. Furthermore, two impact factors are proposed to comprehensively consider their effects on commutation torque ripple. The three-phase windings are modulated in the commutation process at individual duty cycles. The comprehensive optimisation index of commutation torque ripple for different working conditions is obtained by calculating the relative relationship of the impact factors. The optimisation index determines the proper modulation duty cycles. Therefore, the motor parameters and working conditions do not limit the strategy. Finally, the experimental results verify the correctness of the theoretical analysis and the feasibility of the proposed strategy. The proposed strategy can reduce the commutation torque ripple by 16.28% and 21.80% and shorten the commutation time by 50.00% and 36.67% at low speed and high speed, respectively, compared with the conventional strategy.

show abstract

“…Different switch modulation methods are constantly being proposed to suppress torque ripple [23, 24], which need to keep the commutation current slopes of the incoming and outgoing phases balanced during the commutation periods. In a study [25], a modified three‐phase switching method with a torque activation function was proposed. This strategy can reduce the number of switches during a sampling period while suppressing the torque ripple.…”

Section: Introductionmentioning

confidence: 99%

Torque ripple suppression of brushless DC motor drives using an alternating two‐phase and three‐phase conduction mode

Kong

Song

et al. 2020

IET Power Electronics

View full text Add to dashboard Cite

Commutation torque ripple is an important factor affecting the performance of brushless DC (BLDC) motor drives. In order to suppress this torque ripple, an alternating conduction control strategy between the two-phase and three-phase conduction mode has been proposed in this study. During the non-commutation periods, the conventional two-phase conduction mode is selected to drive the BLDC motor. While during the commutation period, the commutation torque ripple is reduced by employing an alternating two-phase and three-phase conduction mode. By calculating the duty cycle of the three-phase conduction mode, which indicates whether the rate of change in current in the incoming and outgoing phase is equal during the commutation interval, the commutation torque ripple is effectively reduced, while the current in the non-commutated phase is maintained constant. Simulation and experimental results show that the proposed method can suppress the commutation torque ripple efficiently, particularly at high rotational speeds of the motor.

show abstract

Torque ripple reduction of the BLDC motor using a modified 3-phase conduction method

Cited by 7 publications

References 6 publications

Simplified Control for Torque and Speed Ripple Mitigation in Brushless DC Motors

Simplified Control for Torque and Speed Ripple Mitigation in Brushless DC Motors

Coordinated suppression commutation torque ripple for brushless DC motor with commutation time

Torque ripple suppression of brushless DC motor drives using an alternating two‐phase and three‐phase conduction mode

Contact Info

Product

Resources

About