Eemods 19.5 17h

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S… Speaker 1 (Eemods 19.5 17h)

I intend to hear some small directions,

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S… Speaker 1 (Eemods 19.5 17h)

environmental results,

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S… Speaker 1 (Eemods 19.5 17h)

an economic analysis,

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S… Speaker 1 (Eemods 19.5 17h)

and some conclusions.

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S… Speaker 1 (Eemods 19.5 17h)

So,

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S… Speaker 1 (Eemods 19.5 17h)

it's interesting to compare these kind of technologies that require

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S… Speaker 1 (Eemods 19.5 17h)

young people in applications.

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S… Speaker 1 (Eemods 19.5 17h)

we need to use the 618991

0:36

S… Speaker 1 (Eemods 19.5 17h)

standard.

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S… Speaker 1 (Eemods 19.5 17h)

That is of course the

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S… Speaker 1 (Eemods 19.5 17h)

one that is required for testing polypricism with

0:46

S… Speaker 1 (Eemods 19.5 17h)

the verbal speed drives.

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S… Speaker 1 (Eemods 19.5 17h)

But there is some catch here because when

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S… Speaker 1 (Eemods 19.5 17h)

you see the machine being sold and you look at the catalogue,

0:59

S… Speaker 1 (Eemods 19.5 17h)

normally they were tested by the

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S… Speaker 1 (Eemods 19.5 17h)

634.

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S… Speaker 1 (Eemods 19.5 17h)

there's 13 -1 and 34

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S… Speaker 1 (Eemods 19.5 17h)

-2 -1 so because they are one -stuck machines

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S… Speaker 1 (Eemods 19.5 17h)

so you test them using the 34 -2 -1

1:19

S… Speaker 1 (Eemods 19.5 17h)

standard but the permanent minets or

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S… Speaker 1 (Eemods 19.5 17h)

or the synchronous electric machines they have to be

1:28

S… Speaker 1 (Eemods 19.5 17h)

tested using this one the

1:32

S… Speaker 1 (Eemods 19.5 17h)

the C734 -2 -2 -3

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S… Speaker 1 (Eemods 19.5 17h)

So, the efficiency that you see on the nameplate or

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S… Speaker 1 (Eemods 19.5 17h)

in the catalogue is not tested in the same conditions.

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S… Speaker 1 (Eemods 19.5 17h)

So,

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S… Speaker 1 (Eemods 19.5 17h)

in the case of the induction machine,

1:47

S… Speaker 1 (Eemods 19.5 17h)

you are using almost ideal power

1:52

S… Speaker 1 (Eemods 19.5 17h)

supply voltage.

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S… Speaker 1 (Eemods 19.5 17h)

It's the desired power supply.

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S… Speaker 1 (Eemods 19.5 17h)

And in the case of the synchronous machines,

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S… Speaker 1 (Eemods 19.5 17h)

you need to consider all the conditions that are described

2:01

S… Speaker 1 (Eemods 19.5 17h)

in these standards for aerospace machines.

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S… Speaker 1 (Eemods 19.5 17h)

in which are taking into account

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S… Speaker 1 (Eemods 19.5 17h)

also the harmonic losses and therefore you cannot compare directly

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S… Speaker 1 (Eemods 19.5 17h)

these efficiency levels that are on the nameplate in both machines.

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S… Speaker 1 (Eemods 19.5 17h)

So

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S… Speaker 1 (Eemods 19.5 17h)

we know that squirrel cage emissions dominate

2:28

S… Speaker 1 (Eemods 19.5 17h)

the market,

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S… Speaker 1 (Eemods 19.5 17h)

particularly online such applications.

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S… Speaker 1 (Eemods 19.5 17h)

But when we look at variable speed and or variable torque

2:40

S… Speaker 1 (Eemods 19.5 17h)

applications,

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S… Speaker 1 (Eemods 19.5 17h)

we start to see signals of

2:45

S… Speaker 1 (Eemods 19.5 17h)

motor technology to grow fast due to the

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S… Speaker 1 (Eemods 19.5 17h)

obvious advantages that we will talk about here.

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S… Speaker 1 (Eemods 19.5 17h)

And so in that scenario

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S… Speaker 1 (Eemods 19.5 17h)

of variable speed,

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S… Speaker 1 (Eemods 19.5 17h)

variable torque applications,

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S… Speaker 1 (Eemods 19.5 17h)

this hybrid technology is permanent.

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S… Speaker 1 (Eemods 19.5 17h)

minot -assisted technology is

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S… Speaker 1 (Eemods 19.5 17h)

interesting because it's a mix between both

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S… Speaker 1 (Eemods 19.5 17h)

current minot and synchronous wireless technology.

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S… Speaker 1 (Eemods 19.5 17h)

But you can use very high

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S… Speaker 1 (Eemods 19.5 17h)

density current minots,

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S… Speaker 1 (Eemods 19.5 17h)

but you can also use ferrite minots.

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S… Speaker 1 (Eemods 19.5 17h)

And that decreases a lot the cost of the machine.

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S… Speaker 1 (Eemods 19.5 17h)

And so I think it's a very balanced

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S… Speaker 1 (Eemods 19.5 17h)

solution.

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S… Speaker 1 (Eemods 19.5 17h)

because you can improve the power factor,

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S… Speaker 1 (Eemods 19.5 17h)

which is also important,

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S… Speaker 1 (Eemods 19.5 17h)

in order to reduce the rating

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S… Speaker 1 (Eemods 19.5 17h)

of the inverter,

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S… Speaker 1 (Eemods 19.5 17h)

and that's an advantage.

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S… Speaker 1 (Eemods 19.5 17h)

And also,

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S… Speaker 1 (Eemods 19.5 17h)

as well as the losses in the inverter are

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S… Speaker 1 (Eemods 19.5 17h)

also reduced.

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S… Speaker 1 (Eemods 19.5 17h)

And so we have probably the best of both

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S… Speaker 1 (Eemods 19.5 17h)

worlds.

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S… Speaker 1 (Eemods 19.5 17h)

And the relentless world can merge

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S… Speaker 1 (Eemods 19.5 17h)

and you have this kind of hybrid machine.

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S… Speaker 1 (Eemods 19.5 17h)

Just a note here that when today,

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S… Speaker 1 (Eemods 19.5 17h)

when you're talking about permanent magnet machines or permanent

4:15

S… Speaker 1 (Eemods 19.5 17h)

-assisted synchronous relentless machines,

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S… Speaker 1 (Eemods 19.5 17h)

basically it's the same technology.

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S… Speaker 1 (Eemods 19.5 17h)

It's just a matter of which torque is dominant,

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S… Speaker 1 (Eemods 19.5 17h)

the relentless or the permanent magnet is dominating.

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S… Speaker 1 (Eemods 19.5 17h)

Because it's the same,

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S… Speaker 1 (Eemods 19.5 17h)

because the permanent magnet machine also has a relentless torque.

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S… Speaker 1 (Eemods 19.5 17h)

most of the most common designs like a v -shape or u -shape

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S… Speaker 1 (Eemods 19.5 17h)

design so basically it's the same and so

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S… Speaker 1 (Eemods 19.5 17h)

these technologies so many manufacturers

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S… Speaker 1 (Eemods 19.5 17h)

now say that with these permanent magnet assistive

4:52

S… Speaker 1 (Eemods 19.5 17h)

machines they can reach the i6

4:56

S… Speaker 1 (Eemods 19.5 17h)

or i5 plus

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S… Speaker 1 (Eemods 19.5 17h)

hyper premium efficiency.

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S… Speaker 1 (Eemods 19.5 17h)

That means that they can reduce 30 %

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S… Speaker 1 (Eemods 19.5 17h)

on the loss in relation to I4 or

5:12

S… Speaker 1 (Eemods 19.5 17h)

I5.

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S… Speaker 1 (Eemods 19.5 17h)

That's the claim.

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S… Speaker 1 (Eemods 19.5 17h)

So the idea was to try to check with one

5:19

S… Speaker 1 (Eemods 19.5 17h)

of the latest technologies that are being commercialized

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S… Speaker 1 (Eemods 19.5 17h)

and compare.

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S… Speaker 1 (Eemods 19.5 17h)

So this is an experiment that was

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S… Speaker 1 (Eemods 19.5 17h)

made.

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S… Speaker 1 (Eemods 19.5 17h)

inverter and we test these both in the states 7

5:37

S… Speaker 1 (Eemods 19.5 17h)

.5 i4 class induction machine

5:41

S… Speaker 1 (Eemods 19.5 17h)

7 .5

5:45

S… Speaker 1 (Eemods 19.5 17h)

here

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S… Speaker 1 (Eemods 19.5 17h)

you can see the name plates for the rear motor this

6:08

S… Speaker 1 (Eemods 19.5 17h)

induction induction was offered to us by VAG

6:13

S… Speaker 1 (Eemods 19.5 17h)

many years ago but it is still a

6:17

S… Speaker 1 (Eemods 19.5 17h)

very good machine

6:39

S… Speaker 1 (Eemods 19.5 17h)

We use a shaft torque,

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S… Speaker 1 (Eemods 19.5 17h)

a sensor,

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S… Speaker 1 (Eemods 19.5 17h)

precision power analyzer,

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S… Speaker 1 (Eemods 19.5 17h)

and so everything is equal in both machines and the same inverter.

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S… Speaker 1 (Eemods 19.5 17h)

So it was a fair comparison for sure.

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S… Speaker 1 (Eemods 19.5 17h)

So

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S… Speaker 1 (Eemods 19.5 17h)

the manufacturer of this hybrid

7:03

S… Speaker 1 (Eemods 19.5 17h)

machine presents in the catalogue some information.

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S… Speaker 1 (Eemods 19.5 17h)

It's interesting to look at it because it says...

7:13

S… Speaker 1 (Eemods 19.5 17h)

But the signal that this design eliminates rotor losses,

7:16

S… Speaker 1 (Eemods 19.5 17h)

yes,

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S… Speaker 1 (Eemods 19.5 17h)

visually it's true,

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S… Speaker 1 (Eemods 19.5 17h)

but it's not completely true.

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S… Speaker 1 (Eemods 19.5 17h)

There are some losses in rotor,

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S… Speaker 1 (Eemods 19.5 17h)

always.

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S… Speaker 1 (Eemods 19.5 17h)

Because it's a conductive,

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S… Speaker 1 (Eemods 19.5 17h)

you have conductive parts in there,

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S… Speaker 1 (Eemods 19.5 17h)

you cannot forget that,

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S… Speaker 1 (Eemods 19.5 17h)

okay, you have a dominant rotating field,

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S… Speaker 1 (Eemods 19.5 17h)

but you also have harmonic rotating fields in

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S… Speaker 1 (Eemods 19.5 17h)

rotor -circle interaction,

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S… Speaker 1 (Eemods 19.5 17h)

because the winding is not perfect.

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S… Speaker 1 (Eemods 19.5 17h)

special harmonics in a magnet motive force in the ICAP.

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S… Speaker 1 (Eemods 19.5 17h)

And the addition of direct magnet increases

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S… Speaker 1 (Eemods 19.5 17h)

field strength,

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S… Speaker 1 (Eemods 19.5 17h)

less low compared stator,

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S… Speaker 1 (Eemods 19.5 17h)

that's true for sure,

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S… Speaker 1 (Eemods 19.5 17h)

referred to you.

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S… Speaker 1 (Eemods 19.5 17h)

And less overall losses,

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S… Speaker 1 (Eemods 19.5 17h)

lower current growth and lower motor temperatures.

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S… Speaker 1 (Eemods 19.5 17h)

This last one,

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S… Speaker 1 (Eemods 19.5 17h)

it seems to be true.

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S… Speaker 1 (Eemods 19.5 17h)

My conclusion was Jones.

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S… Speaker 1 (Eemods 19.5 17h)

So it's interesting.

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S… Speaker 1 (Eemods 19.5 17h)

So the manufacturer also shows

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S… Speaker 1 (Eemods 19.5 17h)

the technology and it's a reference machine

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S… Speaker 1 (Eemods 19.5 17h)

with the permanent magnets inserted in the space

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S… Speaker 1 (Eemods 19.5 17h)

of the flex barriers.

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S… Speaker 1 (Eemods 19.5 17h)

But it could be a permanent magnet machine with

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S… Speaker 1 (Eemods 19.5 17h)

a V -shaped configuration and like that.

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S… Speaker 1 (Eemods 19.5 17h)

So it's also different.

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S… Speaker 1 (Eemods 19.5 17h)

And there is a detail that is quite interesting,

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S… Speaker 1 (Eemods 19.5 17h)

a detail in this machine.

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S… Speaker 1 (Eemods 19.5 17h)

they install by default

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S… Speaker 1 (Eemods 19.5 17h)

a brush connected shaft and

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S… Speaker 1 (Eemods 19.5 17h)

this is to deviate currents

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S… Speaker 1 (Eemods 19.5 17h)

from the

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S… Speaker 1 (Eemods 19.5 17h)

barriers and it's very clever because if this machine

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S… Speaker 1 (Eemods 19.5 17h)

only works with an inverter and we know that an expectation

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S… Speaker 1 (Eemods 19.5 17h)

like a PWM

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S… Speaker 1 (Eemods 19.5 17h)

will inject a common mode voltage into the windings

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S… Speaker 1 (Eemods 19.5 17h)

there is no way not to have a high frequency

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S… Speaker 1 (Eemods 19.5 17h)

current in the bearings that will short the lifespan

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S… Speaker 1 (Eemods 19.5 17h)

of the bearing I can tell you statistically it will lower

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S… Speaker 1 (Eemods 19.5 17h)

2 to 4 times the lifespan of the bearings and

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S… Speaker 1 (Eemods 19.5 17h)

so it's clever to consider

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S… Speaker 1 (Eemods 19.5 17h)

this kind of detail on his machine because

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S… Speaker 1 (Eemods 19.5 17h)

if

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S… Speaker 1 (Eemods 19.5 17h)

You think that when a bearing fails,

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S… Speaker 1 (Eemods 19.5 17h)

you need to dismantle the machine,

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S… Speaker 1 (Eemods 19.5 17h)

you need to change the bearing,

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etc. We're

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S… Speaker 1 (Eemods 19.5 17h)

able to reduce the frequency of this bearing in place.

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So

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we test basically the points that are at

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S… Speaker 1 (Eemods 19.5 17h)

61 ,892

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standard and again 25 degrees Celsius

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in the room,

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in the lab.

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and so basically we cast

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S… Speaker 1 (Eemods 19.5 17h)

8 points but in our analysis we can only consider

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S… Speaker 1 (Eemods 19.5 17h)

these 3 points so

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S… Speaker 1 (Eemods 19.5 17h)

first result motor efficiency

10:57

S… Speaker 1 (Eemods 19.5 17h)

and it's

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S… Speaker 1 (Eemods 19.5 17h)

obvious the advantage that the permanent magnet

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S… Speaker 1 (Eemods 19.5 17h)

has over the induction machine

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S… Speaker 1 (Eemods 19.5 17h)

When you start to reduce speed,

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S… Speaker 1 (Eemods 19.5 17h)

if you maintain 100 % torque,

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S… Speaker 1 (Eemods 19.5 17h)

yes,

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S… Speaker 1 (Eemods 19.5 17h)

there is a huge difference between both systems.

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S… Speaker 1 (Eemods 19.5 17h)

We are talking about only the motor efficiency,

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S… Speaker 1 (Eemods 19.5 17h)

not the system efficiency.

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S… Speaker 1 (Eemods 19.5 17h)

But I was

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S… Speaker 1 (Eemods 19.5 17h)

expecting more,

11:31

S… Speaker 1 (Eemods 19.5 17h)

because the difference is not so huge

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S… Speaker 1 (Eemods 19.5 17h)

as I was expecting.

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S… Speaker 1 (Eemods 19.5 17h)

So the technology is better,

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S… Speaker 1 (Eemods 19.5 17h)

but it's not really so better than the induction machine,

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S… Speaker 1 (Eemods 19.5 17h)

even at low speed.

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S… Speaker 1 (Eemods 19.5 17h)

And so this was a little bit of a surprise.

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S… Speaker 1 (Eemods 19.5 17h)

So the

11:53

S… Speaker 1 (Eemods 19.5 17h)

VSD,

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S… Speaker 1 (Eemods 19.5 17h)

the drive,

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S… Speaker 1 (Eemods 19.5 17h)

also has a better efficiency with this

12:04

S… Speaker 1 (Eemods 19.5 17h)

hybrid motor.

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S… Speaker 1 (Eemods 19.5 17h)

And why?

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S… Speaker 1 (Eemods 19.5 17h)

Because of that power factor,

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S… Speaker 1 (Eemods 19.5 17h)

the motor will need less current,

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S… Speaker 1 (Eemods 19.5 17h)

line current,

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S… Speaker 1 (Eemods 19.5 17h)

so we will have less losses in the inverter.

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S… Speaker 1 (Eemods 19.5 17h)

it has an advantage for sure though there

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S… Speaker 1 (Eemods 19.5 17h)

are also other things that sometimes are not considered

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S… Speaker 1 (Eemods 19.5 17h)

because if you have an inverter a lower load

12:35

S… Speaker 1 (Eemods 19.5 17h)

you have more current distortion at the input so it's

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S… Speaker 1 (Eemods 19.5 17h)

not straightforward but anyway it's here it's a good example that

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S… Speaker 1 (Eemods 19.5 17h)

the technology can help you twice the motor itself and

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S… Speaker 1 (Eemods 19.5 17h)

also

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S… Speaker 1 (Eemods 19.5 17h)

reducing the loss of lift in the inverter boosting the final

12:52

S… Speaker 1 (Eemods 19.5 17h)

efficiency of the system but

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S… Speaker 1 (Eemods 19.5 17h)

it's interesting here to see that at 25 % torque particularly

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S… Speaker 1 (Eemods 19.5 17h)

here because the current is so low the lift is not

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S… Speaker 1 (Eemods 19.5 17h)

so significant so as you reduce the torque and

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the speed the advantages start to be quite

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S… Speaker 1 (Eemods 19.5 17h)

less round so

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the power drive system efficiency

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Now we combine both motor and inverter efficiency and

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S… Speaker 1 (Eemods 19.5 17h)

yes here now we have a significant difference

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S… Speaker 1 (Eemods 19.5 17h)

both at 90 % of speed and also at

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S… Speaker 1 (Eemods 19.5 17h)

low speed for 100 % torque and

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also at 50 % and at 25 %

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S… Speaker 1 (Eemods 19.5 17h)

it still maintains that difference.

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S… Speaker 1 (Eemods 19.5 17h)

And that's why,

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S… Speaker 1 (Eemods 19.5 17h)

in the first presentation,

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S… Speaker 1 (Eemods 19.5 17h)

I was trying to highlight that

14:20

S… Speaker 1 (Eemods 19.5 17h)

savings in

14:25

S… Speaker 1 (Eemods 19.5 17h)

absolute value are much more relevant when you have

14:29

S… Speaker 1 (Eemods 19.5 17h)

a higher load.

14:30

S… Speaker 1 (Eemods 19.5 17h)

When you start to decrease the load because it's lower speed or lower torque,

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S… Speaker 1 (Eemods 19.5 17h)

you start to decrease also this loss difference.

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S… Speaker 1 (Eemods 19.5 17h)

And the loss difference is really what matters here,

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S… Speaker 1 (Eemods 19.5 17h)

not the rest.

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The loss difference is really what you are saving depending on the temperature.

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S… Speaker 1 (Eemods 19.5 17h)

And you can see that,

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S… Speaker 1 (Eemods 19.5 17h)

for example,

14:49

S… Speaker 1 (Eemods 19.5 17h)

at this point,

14:50

S… Speaker 1 (Eemods 19.5 17h)

90 % speed and 90 % torque of 224

14:55

S… Speaker 1 (Eemods 19.5 17h)

watts of difference.

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S… Speaker 1 (Eemods 19.5 17h)

percent speed you maintain more or less and you can actually increase

15:04

S… Speaker 1 (Eemods 19.5 17h)

a little bit the loss difference or the savings but

15:08

S… Speaker 1 (Eemods 19.5 17h)

when you go to 25 percent torque it will go

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S… Speaker 1 (Eemods 19.5 17h)

up so the savings are not so relevant though

15:17

S… Speaker 1 (Eemods 19.5 17h)

in terms of percentage it is

15:22

S… Speaker 1 (Eemods 19.5 17h)

relevant but not in absolute values

15:24

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and that's very important to consider in our economic studies and

15:29

S… Speaker 1 (Eemods 19.5 17h)

our economic comparison.

15:30

S… Speaker 1 (Eemods 19.5 17h)

Now

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S… Speaker 1 (Eemods 19.5 17h)

that's a surprise here because when you look at temperature and

15:38

S… Speaker 1 (Eemods 19.5 17h)

here we have we measured

15:42

S… Speaker 1 (Eemods 19.5 17h)

the motor frame temperature directly with

15:47

S… Speaker 1 (Eemods 19.5 17h)

a PT100 temperature sensor

15:52

S… Speaker 1 (Eemods 19.5 17h)

And we found that the hybrid motor has a

15:56

S… Speaker 1 (Eemods 19.5 17h)

slightly higher temperature in the freck.

15:59

S… Speaker 1 (Eemods 19.5 17h)

I wasn't expecting this.

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S… Speaker 1 (Eemods 19.5 17h)

But when you reduce

16:05

S… Speaker 1 (Eemods 19.5 17h)

the torque, it's more or less the same.

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S… Speaker 1 (Eemods 19.5 17h)

And here,

16:09

S… Speaker 1 (Eemods 19.5 17h)

for a very low torque,

16:10

S… Speaker 1 (Eemods 19.5 17h)

it has a

16:14

S… Speaker 1 (Eemods 19.5 17h)

low temperature.

16:15

S… Speaker 1 (Eemods 19.5 17h)

The question is why?

16:17

S… Speaker 1 (Eemods 19.5 17h)

Why this machine has a higher temperature?

16:22

S… Speaker 1 (Eemods 19.5 17h)

When

16:28

S… Speaker 1 (Eemods 19.5 17h)

you look at the winding temperature that we measure by stopping the machine

16:32

S… Speaker 1 (Eemods 19.5 17h)

in each of the points and we measure the rest of

16:36

S… Speaker 1 (Eemods 19.5 17h)

the winding and we convert

16:40

S… Speaker 1 (Eemods 19.5 17h)

it into the distribution temperature of the winding and

16:44

S… Speaker 1 (Eemods 19.5 17h)

we see that

16:46

S… Speaker 1 (Eemods 19.5 17h)

the difference is very significant so the lining that is 90 percent

16:50

S… Speaker 1 (Eemods 19.5 17h)

speed and when it's on torque it's it's almost

16:54

S… Speaker 1 (Eemods 19.5 17h)

20 kelvin so 20 kelvin is

16:58

S… Speaker 1 (Eemods 19.5 17h)

very significant it can really decrease the lifespan

17:02

S… Speaker 1 (Eemods 19.5 17h)

of the lining significantly and only

17:07

S… Speaker 1 (Eemods 19.5 17h)

it starts to be interesting when you reduce the speed or

17:12

S… Speaker 1 (Eemods 19.5 17h)

the torque okay in that case you're doing verge

17:15

S… Speaker 1 (Eemods 19.5 17h)

this temperature relation.

17:17

S… Speaker 1 (Eemods 19.5 17h)

So this machine operates

17:22

S… Speaker 1 (Eemods 19.5 17h)

with a higher temperature for sure when you are close

17:26

S… Speaker 1 (Eemods 19.5 17h)

to the rate of power.

17:28

S… Speaker 1 (Eemods 19.5 17h)

Why?

17:29

S… Speaker 1 (Eemods 19.5 17h)

Probably that's my explanation because the

17:34

S… Speaker 1 (Eemods 19.5 17h)

frame is not so optimized to dissipate the

17:38

S… Speaker 1 (Eemods 19.5 17h)

heat and so the thermal resistance is

17:42

S… Speaker 1 (Eemods 19.5 17h)

probably higher in the machine.

17:45

S… Speaker 1 (Eemods 19.5 17h)

when you compare it to the harmonized in an induction machine.

17:48

S… Speaker 1 (Eemods 19.5 17h)

Because they know the machine is more efficient.

17:50

S… Speaker 1 (Eemods 19.5 17h)

They know they have more losses.

17:52

S… Speaker 1 (Eemods 19.5 17h)

So they kept on the dissipation capability

17:56

S… Speaker 1 (Eemods 19.5 17h)

of the machine.

17:57

S… Speaker 1 (Eemods 19.5 17h)

That's why.

17:58

S… Speaker 1 (Eemods 19.5 17h)

But probably it's not a good thing here.

18:01

S… Speaker 1 (Eemods 19.5 17h)

So it should be optimized and

18:06

S… Speaker 1 (Eemods 19.5 17h)

probably revisited in terms of design to guarantee a lower temperature

18:10

S… Speaker 1 (Eemods 19.5 17h)

in relation to an induction machine.

18:20

S… Speaker 1 (Eemods 19.5 17h)

But regarding the temperature,

18:22

S… Speaker 1 (Eemods 19.5 17h)

one important thing that we should mention is

18:26

S… Speaker 1 (Eemods 19.5 17h)

that not having rotor losses,

18:29

S… Speaker 1 (Eemods 19.5 17h)

of course,

18:30

S… Speaker 1 (Eemods 19.5 17h)

the bearing temperature is expected to be lower.

18:34

S… Speaker 1 (Eemods 19.5 17h)

I didn't measure it,

18:35

S… Speaker 1 (Eemods 19.5 17h)

but it's an advantage because it contributes

18:39

S… Speaker 1 (Eemods 19.5 17h)

to older life in the bearing lubricants,

18:44

S… Speaker 1 (Eemods 19.5 17h)

etc.

18:44

S… Speaker 1 (Eemods 19.5 17h)

So, because we don't have rotor losses,

18:48

S… Speaker 1 (Eemods 19.5 17h)

not having rotor losses,

18:49

S… Speaker 1 (Eemods 19.5 17h)

we have a lower rotor temperature,

18:50

S… Speaker 1 (Eemods 19.5 17h)

so the bearings.

18:51

S… Speaker 1 (Eemods 19.5 17h)

will last longer.

18:53

S… Speaker 1 (Eemods 19.5 17h)

So that's an advantage of this innovation.

18:55

S… Speaker 1 (Eemods 19.5 17h)

So I

18:59

S… Speaker 1 (Eemods 19.5 17h)

did here a very basic economic analysis because I didn't have

19:04

S… Speaker 1 (Eemods 19.5 17h)

enough data.

19:04

S… Speaker 1 (Eemods 19.5 17h)

I just have data for

19:09

S… Speaker 1 (Eemods 19.5 17h)

the i4 classification.

19:11

S… Speaker 1 (Eemods 19.5 17h)

The list cost is 795

19:15

S… Speaker 1 (Eemods 19.5 17h)

euros.

19:16

S… Speaker 1 (Eemods 19.5 17h)

And I made a kind of a different calculation.

19:20

S… Speaker 1 (Eemods 19.5 17h)

I said, okay,

19:21

S… Speaker 1 (Eemods 19.5 17h)

what could be...

19:23

S… Speaker 1 (Eemods 19.5 17h)

extra cost of this hybrid machine to

19:27

S… Speaker 1 (Eemods 19.5 17h)

have a two -year payback time for different scenarios.

19:31

S… Speaker 1 (Eemods 19.5 17h)

I consider different costs for electricity,

19:35

S… Speaker 1 (Eemods 19.5 17h)

0 .1 kWh

19:41

S… Speaker 1 (Eemods 19.5 17h)

and 0 .2 kWh,

19:43

S… Speaker 1 (Eemods 19.5 17h)

as well as different operating hours per year from 2000

19:47

S… Speaker 1 (Eemods 19.5 17h)

to 2000.

19:48

S… Speaker 1 (Eemods 19.5 17h)

And so the cost

19:54

S… Speaker 1 (Eemods 19.5 17h)

of the power drive system was

19:57

S… Speaker 1 (Eemods 19.5 17h)

reduction is here listed and the

20:01

S… Speaker 1 (Eemods 19.5 17h)

annual savings in percentage of the induction

20:05

S… Speaker 1 (Eemods 19.5 17h)

machine base price is here built from

20:09

S… Speaker 1 (Eemods 19.5 17h)

6 .5 to 1 .3%.

20:12

S… Speaker 1 (Eemods 19.5 17h)

This is for a constant load torque.

20:15

S… Speaker 1 (Eemods 19.5 17h)

I consider of course the same torque,

20:19

S… Speaker 1 (Eemods 19.5 17h)

11 % torque and 90 % and 50 %

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S… Speaker 1 (Eemods 19.5 17h)

speed.

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S… Speaker 1 (Eemods 19.5 17h)

This is the kind of and 50 % of the time working in both

20:28

S… Speaker 1 (Eemods 19.5 17h)

operating points.

20:29

S… Speaker 1 (Eemods 19.5 17h)

So with this scenario here,

20:31

S… Speaker 1 (Eemods 19.5 17h)

I just came up with these values.

20:35

S… Speaker 1 (Eemods 19.5 17h)

So this machine can cost between 12 .8 and

20:40

S… Speaker 1 (Eemods 19.5 17h)

102 .6 % more than the induction

20:44

S… Speaker 1 (Eemods 19.5 17h)

machine, and you still can't have a payback time

20:48

S… Speaker 1 (Eemods 19.5 17h)

lower than two years.

20:49

S… Speaker 1 (Eemods 19.5 17h)

And

20:55

S… Speaker 1 (Eemods 19.5 17h)

if you consider that with that torque load,

20:59

S… Speaker 1 (Eemods 19.5 17h)

in which we have 50 % of time working at 90 % higher than a new torque,

21:04

S… Speaker 1 (Eemods 19.5 17h)

55 % of the time with 50 % speed and 20 % torque like

21:08

S… Speaker 1 (Eemods 19.5 17h)

a fan for example the scenario is a little bit different

21:12

S… Speaker 1 (Eemods 19.5 17h)

but even so you can have an admissible

21:16

S… Speaker 1 (Eemods 19.5 17h)

extra cost of 9 .4 % up

21:21

S… Speaker 1 (Eemods 19.5 17h)

to 75 % to recover

21:25

S… Speaker 1 (Eemods 19.5 17h)

this extra cost in less than two years so

21:29

S… Speaker 1 (Eemods 19.5 17h)

this is really interesting because you can see that there

21:34

S… Speaker 1 (Eemods 19.5 17h)

is no argument

21:36

S… Speaker 1 (Eemods 19.5 17h)

not to invest in these new technologies and if you put

21:40

S… Speaker 1 (Eemods 19.5 17h)

on the top of it this new information that

21:44

S… Speaker 1 (Eemods 19.5 17h)

probably the price would be almost the same if you take into account

21:48

S… Speaker 1 (Eemods 19.5 17h)

that you can save some material in permanent man -made

21:52

S… Speaker 1 (Eemods 19.5 17h)

synchronous machines it will be completely different in

21:57

S… Speaker 1 (Eemods 19.5 17h)

that case the payback is immediate but in this case this

22:01

S… Speaker 1 (Eemods 19.5 17h)

particular case in two commercial available technologies

22:05

S… Speaker 1 (Eemods 19.5 17h)

it's obvious that this is cost -effective.

22:08

S… Speaker 1 (Eemods 19.5 17h)

So,

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S… Speaker 1 (Eemods 19.5 17h)

concluding,

22:10

S… Speaker 1 (Eemods 19.5 17h)

this experiment has demonstrated

22:15

S… Speaker 1 (Eemods 19.5 17h)

the superior performance of this other machine and

22:20

S… Speaker 1 (Eemods 19.5 17h)

the entire load range.

22:22

S… Speaker 1 (Eemods 19.5 17h)

It's not only because of the lower motor loss but also the

22:26

S… Speaker 1 (Eemods 19.5 17h)

resulting reduction in the DSD engine losses.

Eemods 19.5 17h

Samenvatting

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