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Participant

Join Date: Feb 2017
Posts: 3

Universal Motor

02/09/2017 2:08 AM

I am doing a project on speed control of universal motor. To proceed with the modelling of the motor on the load side, I need to know the exact parameters of the motor such as armature inductance and armature resistance.

Where can I get a datasheet for universal motor?

Also, for the Simulink model, could someone guide me with the basic equations for voltage and speed of universal motor?

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#1

Re: UNIVERSAL MOTOR

02/09/2017 2:15 AM

From the manufacturer, maybe. No one around here is likely to know.

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Guru

Join Date: Dec 2016
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#2

Re: UNIVERSAL MOTOR

02/09/2017 3:06 AM

Any universal motor? Pick one in the size you need, find a manufacturer who makes that size, pick the model number and get the data sheet for it from the manufacturer.

Simulink tutorial

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Guru

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#3

Re: Universal Motor

02/09/2017 8:26 AM

A universal motor is not a specific motor, but a type of motor, one that will run on either AC or DC. The field windings and commutated armature windings are wired in series.

https://en.wikipedia.org/wiki/Universal_motor

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Engineering Fields - Power Engineering - New Member

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#4

Re: Universal Motor

02/09/2017 9:47 AM

You will find the data you seek by opening your DC Machines 101 textbook, or by using your favorite search engine. We don't help students that won't help themselves.

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#5

Re: Universal Motor

02/09/2017 11:20 PM

When you say, " Universal Motor ", is this what you mean ?

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#6

Re: Universal Motor

02/10/2017 1:57 AM

Being as the motor is universal, it helps to start out with with the relevant universal constants, such as the impedance of free space - 377 Ω - and go from there.

As you mentioned inductance, universal motors of course make heavy use of the permeability of free space, that is: 1.25663706 × 10-6 m kg s-2 A-2, and ratios thereof.

The permittivity of free space? Not so much, but as it's part of the impedance thingo you might as well get used to it.

Note: As free space figures prominently in 'universal,' it's probably best to avoid running your simulation in places where space is taxed, prohibited, or non-existent. Where it is void is fine of course, as long as you don't let the legal fine print scare you off - and it will try.

Lastly, nobody said universal motors were easy, but there you are. I dunno, maybe you should've picked something simpler; a stellarator or something like that where you can buy the parts at the hardware store.

Hope this helps.

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Participant

Join Date: Feb 2017
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#8
In reply to #6

Re: Universal Motor

02/16/2017 2:15 PM

Thanks a lot

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#7

Re: Universal Motor

02/16/2017 10:08 AM

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#9
In reply to #7

Re: Universal Motor

02/16/2017 2:17 PM

Thanks a lot.

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