A new approach for minimizing torque ripple in a BLDC motor drive with a front end IDO dc-dc converter

Amirthalingam, Ramya; Mahadevan, Balaji

doi:10.3906/elk-1605-40

Cited by 12 publications

(7 citation statements)

References 21 publications

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“…(11) and (13), it is theoretically seen that if the input voltage of the inverter is equal to four times of the back EMF at the commutation intervals, torque ripples can be completely zero. This equalization was carried out using different DC-DC converters [6,[17][18][19]. In most of the studies, it was assumed that the rotor speed was constant in the commutation intervals.…”

Section: Analysis Of Speed Fluctuation In Brushless DC Motormentioning

confidence: 99%

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Analysis and Suppressing Speed Fluctuations in Brushless DC Motors

Çorapsız

Kahveci

Çorapsiz

2019

Balkan Journal of Electrical and Computer Engineering

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The fluctuations in both speed and torque magnitudes during operation are among the major disadvantages of brushless DC motors. These fluctuations occur due to both the commutation of the inverter switches and the phase winding inductances. This case can lead to major problems, especially in applications which are required constant speed and constant torque. In this work, it was aimed to reduce speed fluctuations that occur in brushless DC motors. Firstly, the simulation model was created by using the dynamic equations of the brushless DC motor. Secondly, a region selective circuit was designed for use in commutation regions. Finally, the commutation signals were generated from the magnitude of the torque produced by the motor. Consequently, the proposed technique was controlled under different speed conditions and was shown that the speed fluctuations can be reduced without the difficult calculations of the commutation time. According to the results obtained, it was observed that the speed fluctuations were significantly reduced.

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Section: Analysis Of Speed Fluctuation In Brushless DC Motormentioning

confidence: 99%

“…This case, is shown in Figs. 15,16,17, respectively. According to the simulation results it was observed that the disturbances occurring in the phase currents affect the rotor speed directly.…”

Section: Proposed Control Strategymentioning

confidence: 99%

Analysis and Suppressing Speed Fluctuations in Brushless DC Motors

Çorapsız

Kahveci

Çorapsiz

2019

Balkan Journal of Electrical and Computer Engineering

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“…Multilevel inverters and modified converters topologies have also gained much attention for current ripple minimization. This is due to their advantages, compared to conventional topologies, such as less switching voltage stress and lower switching losses [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Real Time Implementation for a Low-Cost Control for BLDC Motor Current Ripple Minimization

Dahbi¹,

Doubabi²,

Rachid³

2020

EJEE

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Brushless DC motors are widely used due to many advantages such as high efficiency and low inertia. However, one of the main drawbacks of this motor type is related to the commutation current ripple. This paper deals with this issue encountered during brushless DC motor (BLDCM) control, by using a PI regulator implemented in upstream of the motor inverter. For this purpose, a BLDCM transfer function is established using identification toolbox system, based on a step voltage motor response, and further used to tune the regulator parameters. In this work, the duty ratio is varied twice, one time during commutation instant and the second time during the conduction period, in order to control the non-commutated phase current, presented as an image of the absorbed input current. This fact refers to commutated phases current slope control. Simulation results show a significant current ripple reduction for BLDCM which has also been confirmed using an experimental low-cost platform based on the Arduino Mega controller.

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“…The input signals of the controller were back-emf and the change of the back-emf during the commutation period. In [11], a developed integrated dual-output converter including switch selector has been proposed for reducing ripples in torque during a commutation period. Good performance has been achieved compared with a conventional converter.…”

Section: Introductionmentioning

confidence: 99%

Design of an RLC Compensator for a Synchronous Motor: Torque Ripple Improvement

Fadheel

2019

QJES

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AC-drive systems based Permanent Magnet Synchronous Motor (PMSM) are widely utilized in industrial applications due to many advantages including excellent efficiency, best reliability, and low-effective cost compared with DC-drive systems. Design and implementation of an RLC compensator for a PMSM-drive system is demonstrated in this paper. The main aims of using an RLC compensator are decreasing of Total-Harmonics-Distortion (THD) of the input line current and Ripple Factor (RF) of the electromagnetic torque over a wide range variation in rotor speed and load. The entire transfer function of the proposed system is derived for stability verification under the change of rotor speeds. The proposed PMSM-drive system is implemented with and without RLC compensator for two cases; which are at a fixed load and a step-change in load. Good performance is achieved using the proposed RLC compensator; in terms of THD and RF are 0.77% and 3.13%, respectively.

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A new approach for minimizing torque ripple in a BLDC motor drive with a front end IDO dc-dc converter

Cited by 12 publications

References 21 publications

Analysis and Suppressing Speed Fluctuations in Brushless DC Motors

Analysis and Suppressing Speed Fluctuations in Brushless DC Motors

Real Time Implementation for a Low-Cost Control for BLDC Motor Current Ripple Minimization

Design of an RLC Compensator for a Synchronous Motor: Torque Ripple Improvement

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