Browse Publications Technical Papers 2019-01-6500
2019-03-15

Design of PMDC Motor Using SciFEMM 2019-01-6500

The aim of this work is to analyze and redesign a PMDC (permanent magnet direct current) motor for power density improvement. An alternate approach for design of a PMDC motor is presented here against conventional methods such as analytical solving methods and magnetic circuit modeling techniques. The conventional methods have the limitation of being approximate in nature. The alternative design approach for motor design presented here has the advantage of being less time consuming and more accurate when compared with the above-prescribed methods. An algorithm was developed in SciFEMM to interface SCILAB and FEMM which was then used to create a generic PMDC motor model with variable electrical and magnetic properties. The output from the model can be used to identify torque (Nm), magnetic flux pattern (Wb), field intensity(kA/m), flux linkage (Wb), accurate brush positioning, fill factor, total losses (W), resistance (Ω), inductance (H), current density (A/m2), cogging torque, flux density, and field intensity vector plot. Power density of a PMDC motor was improved by redesigning using the alternative approach and simulated results were again verified using another electromagnetic simulation software.

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