A Simple Voltage Modulator Scheme for Torque Ripple Minimization in a Permanent Magnet Brushless DC Motor

Achary, Rajesh Kuttappan; Durgaprasanth, S.; Nagamani, C.; Ilango, G. Saravana

doi:10.1109/tpel.2019.2926122

Cited by 18 publications

(17 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Fig. 15 the waveforms of simulated d-axis and q-axis currents are shown with the harmonic controllers enabled for n ∈ [5,7,11,13,17] harmonics but without W e cc (z) estimator introduced in Fig. 3.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Transfer function (7) can be used to create an estimator of undisturbed I dq currents I dq = W e CC • I re f dq .…”

Section: B Suppressing the Impact Of Drive Transientsunclassified

“…Within this box, E αβ represents the electromotive force of the controlled motor, acting as the voltage disturbance. Sum of external voltage signals U k αβ , k ∈ [5,7,11,13,17,19], k being the harmonic number of any relevant harmonic, is added to the voltage command U αβ in order to suppress the current harmonics. The signals U k αβ are obtained from individual harmonic controllers.…”

Section: A Fundamental Controllermentioning

confidence: 99%

“…Solutions reported in [5] - [6] consider BLDC drives with commutation scheme where two out of three phases are conducting at any instant and they report reduction of the torque ripple down to 5% -8%. A dc-link voltage modulation circuit to temporarily increase dc-link voltage in the current commutation period is introduced in [7], resulting in torque ripple of 7.75% at high, and 6% at low speeds.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Complete suppression of torque ripple in BLDC machines caused by back emf and dead time

Joksimovic¹,

Levi²,

Vukosavić³

2021

Preprint

View full text Add to dashboard Cite

<div>Abstract—This paper introduces a novel algorithm for suppresion of phase current harmonics in three-phase brushless dc motors caused by non-ideal back-emf waveform and dead-time effects. Proposed feedback acquisition chain obtains an exact information on all the relevant harmonics within each period of the fundamental. Design of the harmonic regulator based on the internal model control principle is given. The paper outlines the relevant details of implementation and the results of verification performed by both computer simulations and experimentally, using a laboratory prototype machine. Experimental results conducted in presence of non-sinusoidal back-emf and with erroneous dead time compensation prove the ability of the proposed solution to remove the stator current harmonics quickly, in just two fundamental periods.</div>

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

“…Transfer function (7) can be used to create an estimator of undisturbed I dq currents I dq = W e CC • I re f dq .…”

Section: B Suppressing the Impact Of Drive Transientsunclassified

Section: A Fundamental Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Complete suppression of torque ripple in BLDC machines caused by back emf and dead time

Joksimovic¹,

Levi²,

Vukosavić³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…However, the BLDCM usually adopts a two-phase conducting mode, which will result in torque ripple during the commutation period, and the torque ripple can reach more than 50% of the average load torque. The large noise and vibration produced by commutation torque ripple will affect the normal operation of the load equipment, and seriously restrict the application of the BLDCM under high-precision and high-stability operating conditions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Commutation Torque Ripple Reduction Strategy of Brushless DC Motor Drives Based on Boosting Voltage of DC-Link Small Capacitor

Yuan

Chen

et al. 2022

Micromachines

View full text Add to dashboard Cite

Based on the brushless DC motor system with DC-link small capacitance powered by a single-phase AC power source, a boosting DC-link voltage strategy to reduce the commutation torque ripple of brushless DC motors is proposed in this paper. The control strategy utilizes the special topology of the motor system to boost the DC-link capacitor voltage in a specific zone during the non-commutation period. During the commutation period, the high voltage of the DC-link capacitor is released to meet the voltage requirement of the brushless DC motor during commutation. In order to reduce the commutation torque ripple and ensure the normal operation of the brushless DC motor, each rectifier cycle is divided into three zones according to the characteristics of the periodic change of the rectifier output voltage. Different operation modes are proposed for different zones. In DC-link capacitor boost voltage mode, the DC-link capacitor boosts the voltage to meet the voltage of the motor demand during the commutation period for achieving the purpose of reducing the commutation torque ripple. In this paper, the controller of the brushless DC motor system is designed and the experimental platform is built. The experimental results verified the correctness of the theoretical analysis and the feasibility of the proposed method.

show abstract

Commutation torque ripple suppression method for brushless DC motors with minimum phase shift angle

Sun,

Li,

Zhao

et al. 2024

Circuit Theory & Apps

View full text Add to dashboard Cite

SummaryCommutation torque ripple occurs when brushless DC (BLDC) motor runs in the high‐speed range, which degrades operation performance. To overcome the problem, this paper presents a commutation torque ripple suppression method based on the minimum phase shift angle (MPSA) of hall signals. In the paper, the effect of the phase shift angle (PSA) of hall signals on phase current is analyzed, and the MPSA is deduced on the basis of the unit duty cycle of the incoming and non‐commutation phase. With the proposed method, two‐phase conduction mode is used in the full speed range, commutation period and non‐commutation period, which avoids switching modulation mode and enhances system reliability. The proposed method is implemented through shifting hall signals by the MPSA, and it is simple and feasible without the requirement to redesign a controller. Moreover, no additional power devices and precise sensors are required, which reduces design cost and volume size. The proposed method is experimentally compared with different methods under steady operation condition, and the results show superior performance on suppressing commutation torque ripple. The loading experiment demonstrates that the proposed method exhibits good dynamic response. The frequency spectrum of the electromagnetic torque is analyzed, and it is verified that the 6nf harmonics are diminished with the proposed method.

show abstract

A Simple Voltage Modulator Scheme for Torque Ripple Minimization in a Permanent Magnet Brushless DC Motor

Cited by 18 publications

References 16 publications

Complete suppression of torque ripple in BLDC machines caused by back emf and dead time

Complete suppression of torque ripple in BLDC machines caused by back emf and dead time

Commutation Torque Ripple Reduction Strategy of Brushless DC Motor Drives Based on Boosting Voltage of DC-Link Small Capacitor

Commutation torque ripple suppression method for brushless DC motors with minimum phase shift angle

Contact Info

Product

Resources

About