1er step into the unknown, Electric Motor Differential Analysis

[hic]

...
to get mechanical 1Kw on the axis,
since the system works in repulsion,
it will take 2 fields in opposition of the same power,

which represents 2 times the mechanical power and
therefore double the "normal" consumption

Return to your pack ice and stop giving yourself false problems.

it's a real problem

in a repulsion system, it is compulsory to supply energy to the two opposing fields and to the same energy level,

therefore this is double the mechanical power in "your normal"

This logic is held in the case of permanent magnet motor,
magnets that do the same job as the mechanical power on
on the motor axis, in addition to the power consumption.

but does not stand for a coil motor.
900W mechanical for 1KW electric which normally cannot provide sufficient energy for these 2 opposing magnetic fields with equal powers of 1Kw each.

nobody makes you think !!!!!
if you don't want it

[Forhorse]

Do you already know what mechanical power is, that at the output of an engine since this is the subject here?

Bonus question: why in a DC motor with separate excitation there must always be a current flowing in the field winding?

[hic]

Do you already know what mechanical power is, that at the output of an engine since this is the subject here?

Bonus question: why in a DC motor with separate excitation there must always be a current flowing in the field winding?

Should I answer your stupid questions?

You still haven't answered the main question!
Because you didn't understand it.

[Forhorse]

No, it is you who did not understand that your reasoning does not stand out and that the power of a motor is not limited to the strength of the magnets and / or electromagnets that constitute it.

Just look at any separate excited DC motor to realize it.
For example a Leroy-Somer LSK1604
It is a motor of 36kW of useful power (mechanical)
according to you it should therefore absorb 36kW on the armature and 36kw on the inductor, or in any case as much as on the other.

Except that if we look at the plate:
Armature 95.5A at 440V or 42kW
Inductor 3A under 360V or ... 1080W! well shit we are far from 42Kw said so, and even 36Kw

And still try to answer my "silly" questions just to see, it's not that simple.

[hic]

Hi Forhorse
why didn't you give this example earlier?

actually the case is closed
I made a huge dumpling

Sorry!

No, it is you who did not understand that your reasoning does not stand out and that the power of a motor is not limited to the strength of the magnets and / or electromagnets that constitute it.

Just look at any separate excited DC motor to realize it.
For example a Leroy-Somer LSK1604
It is a motor of 36kW of useful power (mechanical)
according to you it should therefore absorb 36kW on the armature and 36kw on the inductor, or in any case as much as on the other.

Except that if we look at the plate:
Armature 95.5A at 440V or 42kW
Inductor 3A under 360V or ... 1080W! well shit we are far from 42Kw said so, and even 36Kw

And still try to answer my "silly" questions just to see, it's not that simple.

[moinsdewatt]

.....
actually the case is closed
I made a huge dumpling

.....

Here we are.

[Other]

Hello

Just look at any separate excited DC motor to realize it.

+1

It has been a while since I have been on the forum
we see that the base of electric motors is not well understood.

the motors with continuous current that the excitation is permanent magnets, a separate excitation, shunt, series, or compound
the energy used to make the excitation (the polar magnetic field) is a very small portion of the energy in the rotor
let's say negligible ..
in the case of a series engine starter motor, the loss in the inductor is only a heat loss due to the passage of the current in these large lines.

Young people have forgotten these old technologies, engine running continuously with all the possible regulation tips. anticompound the why and how we managed to stabilize these motors according to the variable loads of the old rolling mill (1750hp motors) of the crane lifting motors.

We can do the same analysis with squirrel cage motors, all the energy supplied is in the stator, the rotor with its squirrel cage produces a magnetic field.
We could elaborate for a long time on the types of cage why the aluminum bars have a traingular shape, but the subject will lengthen.

Andre

[hic]

2nd version
Proposition
an electric motor does not meet the criterion of Newton's third law



A motor is a magnetic system
which transforms almost all of electrical energy into mechanical energy. 1 for 1

In fact, he cannot obey Newton's third law
repulsion not being ensured, since electrical and magnetic energy cannot be split.

1Kw electric transformed into 1Kw magnetic can only give 1Kw mechanical
that if he doesn't obey Newton's third law

level zero logic

[hic]

Why this relentlessness on the Brushless?
It's an electric motor like any other, loving, electromagnet and turns my chicken ... It's the kind of thing that models this very well in the end while remaining Newtonian.

go contradictor express yourself,
with a simple example is obvious,
since this is normal it must be easy, fingers in the nose.
without modeling

Could it be this mysterious? secret?
or too complicated for you.
Yet Newtoonian mechanics have been acquired for a long time and are relatively simple to manage!

You see? the simulation has started!

Do you feel a bit stuck? it's normal it's real
Welcome to the virtual reality of Experience by Thought

do you see a scam, but maybe future mess.
Cool cool is a first

Indirectly, you're telling me
that I made a elementary error of Newtoonian mechanics. (corrected reality)
(that's my best question )
elementary error, elementary correction, right?


(is the level of virtualization sufficient? no bowls)

[achernar]

Why this relentlessness on the Brushless?
It's an electric motor like any other, loving, electromagnet and turns my chicken ... It's the kind of thing that models this very well in the end while remaining Newtonian.

go contradictor express yourself,
with a simple example is obvious,
since this is normal it must be easy, fingers in the nose.
without modeling

Could it be this mysterious? secret?
or too complicated for you.
Yet Newtoonian mechanics have been acquired for a long time and are relatively simple to manage!

You see? the simulation has started!

Do you feel a bit stuck? it's normal it's real
Welcome to the virtual reality of Experience by Thought

do you see a scam, but maybe future mess.
Cool cool is a first

Indirectly, you're telling me
that I made a elementary error of Newtoonian mechanics. (corrected reality)
(that's my best question )
elementary error, elementary correction, right?


(is the level of virtualization sufficient? no bowls)

Ah cross subject !!!
So I answered you on the other subject
(you are very Morpheus when you express yourself as you did ....)
And no I'm not stuck yet, just that I take time to respond from time to time

So to reiterate the answer given on the other subject, this kind of engine models this very well with a torque from the Lorentz force. To pass in dynamics (because the forces are not constant) it is necessary to work on dt to assimilate it to quasi static.