Semi-Analytical Dynamic Model of Permanent-Magnet Direct Current Brushed Motor Considering Slotting Effect, Commutation, and PWM-Operated Terminal Voltage

Ghosh, Mousam; Ghosh, Suman; Saha, Pradip Kumar; Panda, Goutam Kumar

doi:10.1109/tie.2016.2637303

Cited by 15 publications

(7 citation statements)

References 22 publications

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“…The rotor has coils in the grooves and these coils are connected to a mechanical commutator. The commutator provides the supply of a correctly oriented current to the coils of the rotating anchor so that all currents of the flowing coil side form a torque of the same direction in the magnetic field of the main poles [12].…”

Section: Motorsmentioning

confidence: 99%

“…A permanent magnet rotates and current carrying conductors are fixed in this type of motor. Transistors or rectifiers at the correct rotor position switch the armature coils in such a way that the armature field is in space quadrature with the rotor fields [12]. …”

Section: Figmentioning

confidence: 99%

“…If it is not in desired position, then it is turned in the appropriate direction. The motor speed is proportional to the difference between desired and actual position [12]. Fig.…”

Section: Servo-motorsmentioning

confidence: 99%

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DC motors and servo-motors controlled by Raspberry Pi 2B

et al. 2017

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Abstract. The expanding capabilities of today's microcontrollers and other devices lead to an increased utilization of these technologies in diverse fields. The automation and issue of remote control of moving objects belong to these fields. In this project, a microcontroller Raspberry Pi 2B was chosen for controlling DC motors and servo-motors. This paper provides basic insight into issue of controlling DC motors and servo-motors, connection between Raspberry and other components on breadboard and programming syntaxes for controlling motors in Python programming language.

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Section: Motorsmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

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DC motors and servo-motors controlled by Raspberry Pi 2B

et al. 2017

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“…5b shows the fast Fourier transform (FFT) of I a . The steps to deduce the system equations (6) and 7of PMDC brushed motor after incorporating the spacedomain effect namely slotting effect and commutation phenomenon have been detailed in [19]. Such model is discussed and has been used in this paper to estimate speed of PMDC brushed motor operated with steady input voltage (see Appendix)…”

Section: Effect Of Teeth-slots Position In Armature Currentmentioning

confidence: 99%

“…The semi-analytical PMDC brushed motor dynamic model after incorporating slotting effect and commutation as was proposed in [19] has been used in this paper and represented in this section in detail. Such model has been incorporated for estimation of speed of PMDC brushed motor without any mechanical contact based sensor in this paper.…”

Section: Appendixmentioning

confidence: 99%

Sensorless speed estimation of permanent magnet DC brushed motor considering the effect of armature teeth–slots and commutation

Ghosh

Ghosh²,

Saha³

et al. 2017

IET Power Electronics

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This study proposes a novel technique of speed estimation for permanent magnet direct current (PMDC) brushed motor. The impact of armature teeth-slots and commutation of PMDC motor on armature current is considered in this study to estimate the speed. In many applications, speed measurement of motors is essentially required. Conventionally mechanical sensors are coupled to the motor shaft for speed measurement. Recently many sensorless methods for speed estimation of motor had been introduced. This study proposes a new method where the variation in effective magnetic path reluctance due to continuous alternation in teeth-slots positions with respect to stationery poles is considered. Combined effects of effective magnetic path reluctance variation and armature commutation cause ripple in armature current. In this study, the effect of teethslots in armature current is investigated using finite-element approach and also it is verified experimentally. Furthermore, an elementary circuitry is included in this study in support of the proposed method from armature current. The performed test on a 24 V-100 W brushed PMDC motor indicates that the proposed method is effective in wide range of speed estimation considering the effect of change in mechanical load or terminal voltage level.

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