Analysis and Control of Commutation Torque Ripple in Four-Switch, Three-Phase Brushless DC Motor Drive

Niasar, Abolfazl Halvaei; Vahedi, A.; Moghbelli, Hassan

doi:10.1109/icit.2006.372210

Cited by 15 publications

(13 citation statements)

References 5 publications

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“…An original analytical study on commutation torque ripple has been presented in many papers, from which a conclusion has been drawn that relative torque ripple is independent of current and varies with speed. A similar analysis is presented by Niasar [9], and the strategy of changing the input voltage to reduce commutation torque ripple is proposed.…”

Section: Introductionmentioning

confidence: 89%

“…However, commutation torque ripple, which usually occurs due to the loss of exact phase current control, has always been one major factor in preventing BLDCM from achieving high performance. So far, many studies have been performed to reduce commutation torque ripple [7][8][9]. An original analytical study on commutation torque ripple has been presented in many papers, from which a conclusion has been drawn that relative torque ripple is independent of current and varies with speed.…”

Section: Introductionmentioning

confidence: 99%

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A New Approach for Torque Ripple Minimization in Brushless DC Motor Using SEPIC Converter

Krishna¹,

Kumar²

2013

J Electr Electron Syst

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

A New Approach for Torque Ripple Minimization in Brushless DC Motor Using SEPIC Converter

Krishna¹,

Kumar²

2013

J Electr Electron Syst

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“…Since there are eight available switching states in FSTPI, stator flux (αβ) plane is divided into twelve different sectors spaced by 30 electrical degrees and an optimized lookup table (see Table 3) is used to translate these two control states, together with the stator flux position information defined in equivalent sector, to the inverter gate drive signals [16,17].…”

Section: Optimal Switching Tablementioning

confidence: 99%

“…But it is just verified to be economical and efficient in some occasions with light load, such as robot arm. A study on the generated torque ripples due to phase commutation is presented in the four-switch three-phase BLDCM [6], in which a current control technique is developed to minimize commutation torque for the entire speed range. But Hall sensor is used in this method and the cost of the system is raised.…”

Section: Introductionmentioning

confidence: 99%

A Novel Space Vector modulation Scheme and Direct Torque Control for Four-switch BLDCM Using Flux Observer

Pan¹,

Wang²,

Su³

et al. 2015

Journal of Electrical Engineering and Technology

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-The main purpose of this paper is to describe a DTC (direct torque control) method for four-switch brushless dc motor (BLDCM) drive. In the method, a novel voltage space vector modulation scheme, an optimal switching table, and a flux observation method are proposed. Eight voltage vectors are summarized, which are selected to control BLDCM in SVPWM pattern, and an optimal switching table is proposed to improve the torque distortion caused by midpoint current of the split capacitors. Unlike conventional flux observers, this observer does not require speed adaptation and is not susceptible to speed estimation errors, especially, at low speed. Global asymptotic stability of the flux observer is guaranteed by the Lyapunov stability analysis. DC-offset effects are mitigated by introducing a PI component in the observer gains. This method alleviates the undesired current and torque distortion which is caused by uncontrollable phase. The correctness and feasibility of the method are proved by simulation and experimental results.

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“…The output of the hysteresis controller for torque and flux are shown in Eqs. (Table III) and the stator flux position information defined in the equivalent sector are used to translate these two control states into the inverter gate drive signals [20], [21].…”

Section: Torque Ripple Suppression For Fstpi Bldcm Drivementioning

confidence: 99%

Torque Ripple Suppression Method for BLDCM Drive Based on Four-Switch Three-Phase Inverter

Pan¹,

Sun²,

Wang³

et al. 2015

Journal of Power Electronics

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A novel inverter fault-tolerant control scheme is proposed to drive brushless DC motor. A fault-tolerant inverter and its three fault-tolerant schemes (i.e., phase A fault-tolerant, phase B fault-tolerant, and phase C fault-tolerant) are analyzed. Eight voltage vectors are summarized and a voltage vector selection table is used in the control scheme to improve the midpoint current of the split capacitors. A stator flux observer is proposed. The observer can improve flux estimation, which does not require any speed adaptation mechanism and is immune to speed estimation error. Global stability of the flux observer is guaranteed by the Lyapunov stability analysis. A novel stator resistance estimator is incorporated into the sensorless drive to compensate for the effects of stator resistance variation. DC offset effects are mitigated by introducing an integral component in the observer gains. Finally, a control system based on the control scheme is established. Simulation and experiment results show that the method is correct and feasible.

show abstract

Analysis and Control of Commutation Torque Ripple in Four-Switch, Three-Phase Brushless DC Motor Drive

Cited by 15 publications

References 5 publications

A New Approach for Torque Ripple Minimization in Brushless DC Motor Using SEPIC Converter

A New Approach for Torque Ripple Minimization in Brushless DC Motor Using SEPIC Converter

A Novel Space Vector modulation Scheme and Direct Torque Control for Four-switch BLDCM Using Flux Observer

Torque Ripple Suppression Method for BLDCM Drive Based on Four-Switch Three-Phase Inverter

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