The different influences of four PWM modes on the commutation torque ripples in sensorless brushless DC motors control system

Zhang, Xiangjun; Bo-shi, Chen

doi:10.1109/icems.2001.970741

Cited by 11 publications

(5 citation statements)

References 2 publications

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“…Two of three windings are selected depending on the magnetic pole position information from the hall feedback signal. The current through the two windings is regulated by the PWM control to form a 120° square waveform [7]. The current phase is the same as the flat-roofed back EMF phase.…”

Section: ) Mathematical Modeling Of Brushless DC Motor and Conductedmentioning

confidence: 99%

Application of an average current control method in Double-loop control systems of brushless DC motor

Zhao

Yang

2011

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet)

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Double-loop control systems of brushless DC motor (BLDCM) yield a combination of desired characteristics including simplified control structure, high speed accuracy, wide operating speed range and fast dynamic response. The current loop is very important for system performance. Its linearity is influenced by the accuracy of feedback current. The cost of detecting currents in three windings is higher, and most methods based on shunt-current reaction are nonlinear. An average current control method of sampling the dc-link current at the center of the Pulse-Width Modulation (PWM) on-time interval can overcome the above limitations. Average stator current can be regulated by the average current control method. Simulation results demonstrate this method is very effective and can make systems obtain basically same performance compared with the method of detecting currents in three windings.

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Section: ) Mathematical Modeling Of Brushless DC Motor and Conductedmentioning

confidence: 99%

Application of an average current control method in Double-loop control systems of brushless DC motor

Zhao

Yang

2011

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet)

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“…Literature [6] carefully analyzes the influence of modulation of the torque ripple. Next, it will take a look at the comparison of the effects of H / L-PWM-ON mode for torque ripple.…”

Section: The Torque Ripple Analysismentioning

confidence: 99%

A New Type of Brushless DC Motor Control Strategy

Zhang

Jian

et al. 2014

AMR

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Because torque ripple disturbance can be created when the brushless dc motor is communicating, In this paper, from two aspects of energy feedback and the torque ripple, H/L - PWM - ON control strategy is analyzed .And a simulation system is set up. Through the trials, it shows that H/L - PWM - ON strategy can efficiently complete the energy feedback, has small torque ripple, and fully proves the feasibility and practicability of this control strategy.

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“…PWM used in BLDCM have different modulations such as H-PWM-L-on mode and H-on-L-PWM mode which belong to asymmetric half bridge modulation, PWM-on mode and on-PWM mode that belong to symmetric half bridge modulation. Literature [9] only analyzes the influence of PWM mode on commutation torque ripple. Literature [8] discusses the noncommutation torque ripple but the case during commutation was not mentioned.…”

Section: Introductionmentioning

confidence: 99%

Ripple torque analysis and simulation of BLDC motor with different PWM modes

Liu

Hanjin

Meihong

2012

Proceedings of the 7th International Power Electronics and Motion Control Conference

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Different PWM modes will influence the ripple torque of BLDC motor diversely. This paper introduced the usual PWM modes used in BLDCM and focused on the torque ripple analysis with PWM-ON mode, ON-PWM mode and PWM-ON-PWM mode. With the analysis of the commutation interval and the non-commutation zone, this paper demonstrates that the torque ripple of BLDC motor with the PWM-ON-PWM mode is better than others. Then, this paper established a novel simulation model of BLDCM with different PWM modes. The simulation results verify the analysis result.

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The different influences of four PWM modes on the commutation torque ripples in sensorless brushless DC motors control system

Cited by 11 publications

References 2 publications

Application of an average current control method in Double-loop control systems of brushless DC motor

Application of an average current control method in Double-loop control systems of brushless DC motor

A New Type of Brushless DC Motor Control Strategy

Ripple torque analysis and simulation of BLDC motor with different PWM modes

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