Hello all together,

I have a question about the Z-Source-Inverter.
Can somebody give me some good links, where the Z-Source-Inverter is
described very good?
I have a project, in which I have to integrate the Z-Source-Inverter.
But I didn't understand the function of this circuit.

Thanks a lot!

Hi Sven

http://www.ornl.gov/~webworks/cppr/y2001/pres/121238.pdf

Hi Sven.
Here we go. It absolutely makes sense to use a
z-source-power-inverter instead of conventional pwm-systems based on
regularly variation in the pulse-width of a switched dc-power-supply as
for example a car battery.
OK, the gain in efficiency is not that tremendous but even 0.01 is a lot
at a power level of, lets say, 75KW.
The principle of function is briefly explained in this link originated
by Bascom. To follow up and to understand the principle of mathematics
used in this link might not be the easiest thing on earth but it is
highly satisfying.

I don't know, wether this topic is dead or not.

I also want to know, how a Z-Source-Inverter works, but the formulas
mentioned in the link by Bascomfehler are really hard.
Is there also an other link, in which it is easier explained?
However, thanks to Bascomfehler and Exe for the link although Sven
opened the topic and you wrote the link to him.

Hi Bene
The link is indeed not the easiest thing to understand but I will try to
explain the formal sequences as far as possible.
Do not think that here are no freaks and well-informed guys but
sometimes they are just lazy to merge and discuss.
So give me short while.
This is a tremendous interesting theme.

Hi Bene,
here we go.
I did not follow up those equations in the link as sometimes it is so
special that it exceeds my resources. This is something for spec
ialists.
Roughly the bare facts.
The losses in a standard PWM are equated by the sum of
Pv = sum of ((Rdon x (Imax)²))
where Rdon is the minimal on-resistance of the switching FET and we have
to add all FETS for the total losses as far as they are in the
1-state.
The sense of boosting PWM is to provide a higher voltage at the motor
than the 250V of a standard car battery.
It tells about 420V.
If the maximal average voltage is higher the motor needs a lower current
and so the losses are tending down.
The Z-mechanism is to use 2-4 inductors instead of just 1-2 inductor and
to get more voltage than those named 420V. It is not shown how much
more.
This slows down the Imax and therefore the losses.
At higher power-ratings as i.e. 75KW they promise a lot of gain in
efficiency up to 20%.
Whether this is true or not: God only knows.

Okay,

really a big thank you to you! Sometimes it's a little bit hard to
understand such a complicated circle in English (I'm German).
So thanks a lot, that you tried to explain it to me very simple!

i got simulations on matlab simulink, do you want it ?.

Can I have the simulation for z-source inverter. TQ

julio wrote:
> i got simulations on matlab simulink, do you want it ?.

Can I have that simulation? TQ

Hi, I also request the simulation and any info on component types,
values and measured values on built system

Axel Düsendieb wrote:
> Hi julio,
> I am also intrested in the simulation.
> Please post it here in the forum.
>
> Thanks
> Axel

Hi Axel

Have you got the simulation for z source inverter from julio? If yes can
you send it to me . TQVM!

Tonky Just tonky wrote:
> Hi Julio,
>
> Kindly send the simulations to me. So far I know that Z-source inverter
> could be controlled using some strategies, i.e simple control, maximum
> boost control, constant maximum boost control, as well as modified PWM
> control. Do you have simulations using those strategies? If you could
> send me all you have, I will appreciate it very much. Thanks a lot.

Hi Tonky

Do you have any good link or resources on z-source inverter. If possible
can I have them. TQ

Hi Faridun,
sorry, I havend reveived the simulation for z source inverter.


Axel

Axel Düsendieb wrote:
> Hi Faridun,
> sorry, I havend reveived the simulation for z source inverter.
>
>
> Axel

Hi Axel,

Do you works on z source inverter? If yes, can I have any materials that
good for me to understand faster on this inverter. TQ

Hi all,

I have attached the matlab/simulink files of carrier based control
strategies simple boost control, maximum boost control and constant
boost control. All in open loop.
If it would help to somebody to carry over their research/project, I
would be very happy.
Post me if you have more doubts on this.

Hi refer above posting

Thank you very much Thangaprakash_India. Hope I can ask you further if
I'm facing any problem.

Jayasree Venkat wrote:
> hi,
>
> Iam in need to design controller for z-source inverter in simulink,
> matlab.
>
> suggest me how to do?. or if anybody has already worked on it. kindly
> send those simulations



Hi all,

I'm also need simulation for closed loop control of z-source inverter or
any other material regarding this matter. Anybody here can help. TQ

Jayasree Venkat wrote:
> hi,
>
> Iam in need to design controller for z-source inverter in simulink,
> matlab.
>
> suggest me how to do?. or if anybody has already worked on it. kindly
> send those simulations


Hi Jayasree Venkat,

Have you found any material on closed loop system for z-source inverter?
If yes can you send to me. TQ