Previous in Forum: Oil Spill in a Transformer Next in Forum: PCB Layout
 9 comments
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?

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

### Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

### Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Guru

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21006
Good Answers: 781
#1

### Re: UNIVERSAL MOTOR

02/09/2017 2:15 AM

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

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
2
Guru

Join Date: Dec 2016
Posts: 2914
Good Answers: 115
#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

Good Answer (Score 2)
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9198
Good Answers: 1046
#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

Score 1 for Good Answer
Guru

Join Date: May 2007
Location: NYC metropolitan area.
Posts: 3230
Good Answers: 444
#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.

__________________
“Tell me and I forget. Teach me and I remember. Involve me and I learn.” Ben Franklin.
Score 1 for Good Answer
Guru

Join Date: Oct 2014
Location: Hemet, Land of milk and honey.
Posts: 2365
Good Answers: 36
#5

### Re: Universal Motor

02/09/2017 11:20 PM

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

Guru

Join Date: Dec 2016
Posts: 2914
Good Answers: 115
#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.

Participant

Join Date: Feb 2017
Posts: 3
#8
In reply to #6

### Re: Universal Motor

02/16/2017 2:15 PM

Thanks a lot

Guru

Join Date: Oct 2012
Location: 100 miles North from the World Center
Posts: 856
Good Answers: 42
#7

### Re: Universal Motor

02/16/2017 10:08 AM

__________________
Julius
Score 1 for Good Answer
Participant

Join Date: Feb 2017
Posts: 3
#9
In reply to #7

### Re: Universal Motor

02/16/2017 2:17 PM

Thanks a lot.

 Register to Reply 9 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

### Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

### Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!

### Users who posted comments:

7anoter4 (1); Andrew Westman (2); RAMConsult (1); Rixter (1); Sailee (2); tonyhemet (1); Tornado (1)

 Previous in Forum: Oil Spill in a Transformer Next in Forum: PCB Layout

Advertisement