Commutation Torque Ripple Analysis and Reduction Through Hybrid Switching for BLDC Motor Drives

Bharatkar, S.S.; Yanamshetti, Raju; Chatterjee, Debasish; Ganguli, A.K.

doi:10.1109/iciinfs.2008.4798434

Cited by 11 publications

(4 citation statements)

References 8 publications

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“…Three-phase current i a +i b +i c =0 and zero vector i 0 =0 while the stator winding is Yconnected. A control method can be implemented from sine-wave permanent magnet synchronous motor control strategy, which can make sure the d-axis current is zero, and then the electromagnetic torque can be modified as q q em 2 3 i e P T ω = (9) e q in (9) is variable, which is changed with respect to the variety position of the rotor. By using the method of i q remaining constant, there will be undesirable torque ripple.…”

Section: Full Emf Feedback Strategymentioning

confidence: 99%

“…The one is the optimal design of the motor ontology, such as air-gap magnetic field, the structure of stator and rotor and winding structure, this method can eliminate cogging torque, and the back EMF waveform is approximate to ideal waveform [3][4][5][6]. The other approach uses advanced control strategy to minimize torque ripple, by adjusting phase voltage and current, the deviations of ideal properties are remedied [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Torque Ripple Reduction of Brushless DC Servo Motor Using Full EMF Feedback

Xia

Yuan

Wei

2011

AMR

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Torque ripple reduction of the brushless DC motor has been the main issue of the servo drives in which the speed fluctuation and the vibration should be minimized. Un-ideal back EMF (electromagnetic force) usually induces distinct torque ripple. A full EMF feedback strategy is presented in order to effectively reduce torque ripple. The relationship between the terminal voltage of auxiliary winding and the back EMF of brushless DC motor are investigated, and the back EMF can be measured on-line by using the auxiliary winding, the q-axis current for a constant torque to produce is calculated through coordinate transformation when d-axis current is zero, and the reference q-axis current is adjusted in real time by vector control in dq0 coordinate. The simulation results show that the proposed strategy can effectively minimize the torque ripple.

show abstract

Section: Full Emf Feedback Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Torque Ripple Reduction of Brushless DC Servo Motor Using Full EMF Feedback

Xia

Yuan

Wei

2011

AMR

View full text Add to dashboard Cite

show abstract

“…The commutation torque ripple mainly happens due to switching of load current from one phase to another phase at every 60 ᵒ instant. The proposed approach uses dual switching mode technique to enhance the commutation torque ripple of the motor [7]. The new direct torque control for BLDC motor with upgraded reliability has been addressed to limit the torque ripple with the use of three level hysteresis torque controller [8].…”

Section: Introductionmentioning

confidence: 99%

Torque ripple minimization of PMBLDC motor using simple boost inverter

Vengadakrishnan

Madhanakkumar²,

Pugazhendiran

et al. 2019

IJPEDS

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This paper proposes the implementation of simple boost circuit incorporated in inverter fed Brushless DC (BLDC) motor drive to boost the performance of torque. BLDC motor becoming subtle because of its performance. But the motor performance is inferior due to the voltage source inverter fed operation of BLDC motor which initiates torque ripple during commutation. Here the usage of Switched Boost Inverter (SBI) which minimizes the storage elements (passive elements), more active element and introduces shoot through mode during commutation as like Z-source inverter. The analyses of three phase switched boost inverter fed BLDC motor drive have been carried out. The performance of torque almost depends on the stator phase current of the motor. In BLDC motor during commutation interval, one phase loss its exact stator phase current hence it instigate ripple on the torque. The proposed method focuses two intentions to reduce the torque ripple. The first intension is to operate the BLDC motor at 180<sup>ᵒ</sup> electrical conduction mode, second intension is to introduce the shoot through interval to boost the dc link voltage so as to maintain the stator phase current control which leads to suppress the torque ripple during commutation. The validation of the proposed SBI based BLDC motor control is demonstrated both by MATLAB/Simulink and Field programmable gate array (FPGA) controller-SPARRTAN III processor. The experimental results of the developed SBI based BLDC motor drive is working over a wide speed range with minimal torque ripple compared to the normal PWM based inverter control.

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“…The one is the optimal design of the motor ontology, such as air-gap magnetic field, the structure of stator and rotor and winding structure, this method can eliminate cogging torque, and the back EMF waveform is approximate to ideal waveform [10][11][12][13][14]. The other approach uses advanced control strategy to minimise torque ripple, by adjusting phase voltage and current, the deviations of ideal properties are remedied [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Minimisation of torque ripple in slotless axial flux BLDC motors in terms of design considerations

Pahlavani

Ayat

Vahedi

2017

IET Electric Power Applications

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This study presents an analytical method to calculate instantaneous electromagnetic torque in slotless axial flux brushless DC (BLDC) motors. This method is based on Lorentz force theorem and using phase induced back electromagnetic force (EMF) and phase current. A new analytical method was introduced to compute induced back EMF. 3D finite element computations validate the proposed method. This method requires much less computation time than conventional 3D finite elements, and is therefore suitable for optimisation purposes. Due to practical limitation, phase current approximated by the trapezoidal function. Torque ripple dependency on design parameters was studied and optimum parameters were extracted for slotless axial flux BLDC motor.

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Commutation Torque Ripple Analysis and Reduction Through Hybrid Switching for BLDC Motor Drives

Cited by 11 publications

References 8 publications

Torque Ripple Reduction of Brushless DC Servo Motor Using Full EMF Feedback

Torque Ripple Reduction of Brushless DC Servo Motor Using Full EMF Feedback

Torque ripple minimization of PMBLDC motor using simple boost inverter

Minimisation of torque ripple in slotless axial flux BLDC motors in terms of design considerations

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