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

The aim of this paper is to model a permanent-magnet direct current (PMDC) brushed motor considering the slotting effect and the effect of armature reaction and subsequent commutation phenomenon. These space-domain effects are mapped to time-domain equations of PMDC brushed motor by applying finite...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2017-04, Vol.64 (4), p.2654-2662
Main Authors: Ghosh, Mousam, Ghosh, Suman, Kumar Saha, Pradip, Kumar Panda, Goutam
Format: Article
Language:English
Subjects:
Armature
Armature reaction
Brushes
Commutation
Computer simulation
DC motors
Direct current
Dynamic models
Finite element method
Mathematical model
Motors
Parameters
Permanent magnet motors
Permanent magnets
permanent-magnet direct current (PMDC) brushed motor
Pulse duration modulation
Reluctance
reluctance model
Reluctance motors
slotting effect
Time domain analysis
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Summary:The aim of this paper is to model a permanent-magnet direct current (PMDC) brushed motor considering the slotting effect and the effect of armature reaction and subsequent commutation phenomenon. These space-domain effects are mapped to time-domain equations of PMDC brushed motor by applying finite element approach (FEA) based geometrical modeling of armature. Conventionally, pulse width modulation (PWM) based approach is widely used to control PMDC brushed motor that essentially requires more precise time-domain model. Incorporating the slotting effect as a function of armature position, a reluctance model of PMDC brushed motor is framed. With the help of the reluctance model and by applying FEA over armature geometry, variation of various space-domain parameters are determined as a function of armature position in space that takes slotting effect into consideration. Furthermore, the effect of armature reaction or commutation is also taken into consideration as a function of both space-domain and time-domain parameters. Also incorporating the variation of space-domain parameters' due to slotting effect and armature reaction, the conventional dynamic behavioral time-domain equations are modified and reported with adequate simulation responses with PMDC brushed motor operated at various PWM duty cycle. These modified time-domain equations based simulation responses are further validated with satisfactory experimental results.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2016.2637303