Forum: Analog Circuits Z-Source-Inverter

 Author: Sven (Guest) Posted on: 2009-03-12 10:17

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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!

 Author: Bascomfehler (Guest) Posted on: 2009-03-12 10:42

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Hi Sven

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

 Author: Exe (Guest) Posted on: 2009-03-13 06:14

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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.

 Author: Bene (Guest) Posted on: 2009-03-19 13:10

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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.

 Author: Exe (Guest) Posted on: 2009-03-19 18:22

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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.

 Author: Exe (Guest) Posted on: 2009-03-21 21:27

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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.
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.

 Author: Bene (Guest) Posted on: 2009-04-02 11:26

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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!

 Author: julio (Guest) Posted on: 2009-10-05 20:34

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

 Author: Axel Düsendieb (axel_jeromin) Posted on: 2009-10-07 19:44

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Hi julio,
I am also intrested in the simulation.
Please post it here in the forum.

Thanks
Axel

 Author: Tonky Just tonky (tonky) Posted on: 2010-07-08 08:42

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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.

 Author: Mfn Tajuddin (Guest) Posted on: 2010-08-24 09:30

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

 Author: Mfn Tajuddin (Guest) Posted on: 2010-08-24 09:35

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

Can I have that simulation? TQ

 Author: Dave J (Guest) Posted on: 2010-08-25 23:22

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

 Author: Mfn Tajuddin (Guest) Posted on: 2010-08-26 08:49

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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!

 Author: Mfn Tajuddin (Guest) Posted on: 2010-08-26 08:52

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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

 Author: Axel Düsendieb (Guest) Posted on: 2010-08-26 09:22

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

Axel

 Author: Mfn Tajuddin (Guest) Posted on: 2010-10-08 17:22

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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

 Author: Thangaprakash_India (Guest) Posted on: 2010-11-16 17:24
Attached files:

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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.

 Author: Thangaprakash_India (Guest) Posted on: 2010-11-16 17:27

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Hi refer above posting

 Author: Mfn Tajuddin (Guest) Posted on: 2010-11-18 03:11

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

 Author: Anand Akkara (Company: BITS-PILANI) (aak) Posted on: 2010-12-24 12:30

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hi all,

any body having simulinlk(MATLAB) of closed loop control of z-source
inverter

ple.. post.very imp

AAK

 Author: Jayasree Venkat (jayasree) Posted on: 2011-01-08 03:04

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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

 Author: Mfn Tajuddin (Guest) Posted on: 2011-01-08 07:23

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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

 Author: Mfn Tajuddin (Guest) Posted on: 2011-02-09 04:56

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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

 Author: nitewind (Guest) Posted on: 2012-04-27 10:55

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I am also interested in Z-source inverter.Can anyone share something
Thanks for your help. :D

 Author: SANDIPAN P. (sandipan_p) Posted on: 2012-09-13 21:47

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@ Thangaprakash_India

CAN U PLEASE TELL ME HOW OUTPUT VOLTAGE VARIES IN THIS SIMULATION WHICH
U HAVE ATTACHED ... & WHICH TYPE OF CONTROL TECHNIQUE U HAVE USED 4 GATE
PULSE ..

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How to apply maximum boost control using simulink
I have applied third harmonics and triangular wave as input  to a
relational operator and pulse are generated and no i have provide a
shootthrough input for this output pulse but the output pulse is not
clear and distortion occurs plz if u have simulation for maximum boost
control of z- source plz mail to diz id sadam06husen@gmail.com

 Author: Pradeep sp (Guest) Posted on: 2014-02-01 11:17

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Hi,here i had a doubt in design feature of Z source network...How to
choose the values of inductor and capacitor in the network..I can't
understand from the basic ideas...So,i need a detailed information about
Z source network..

 Author: Disturbed L. (disturbed_l) Posted on: 2014-05-16 12:58

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Thangaprakash_India wrote:
> 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 sir,

I am trying to run the simulations you have posted and getting these
errors

''Warning: Input port 2 of 'ZSI_SBC_Open_Loop_Perfect/Scope4' is not
connected.

Warning: The specified buffer for 'ZSI_SBC_Open_Loop_Perfect/RMS1/T' was
too small.

During simulation, the buffer size was temporarily increased to 17408.
In order to generate code, you need to update the buffer size parameter

Warning: The specified buffer for 'ZSI_SBC_Open_Loop_Perfect/RMS2/T' was
too small.
During simulation, the buffer size was temporarily increased to 17408.
In order to generate code, you need to update the buffer size parameter

Warning: The specified buffer for 'ZSI_SBC_Open_Loop_Perfect/Mean
Value/Transport Delay' was too small. During simulation, the buffer size
was temporarily increased to 17408. In order to generate code, you need
to update the buffer size parameter ''

Please help sir..i am using them for my thesis ..I really need ur help

 Author: Masoud Ghodsi (masoud) Posted on: 2014-12-27 00:34

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Thangaprakash_India wrote:
> Thangaprakash

Hi!
this field. I appreciate that  you would help me. would you send me
simulation  about controler design for quasi-z -source?
thanks!

 Author: pratibha (Guest) Posted on: 2015-03-25 14:22

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Hello sir,
I was trying to generate input pulses for the generator by comparing
triangular wave with constant dc. I changed the configuration parameters
to get triangulation wave at 500 hz and then I used relational operator
to generate pulses. The problem arising is that the relational operator
The change in configuration parameters was fixed step and solver I did
was discrete

 Author: kiwi (Guest) Posted on: 2015-04-05 23:14

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Thangaprakash_India wrote:
> 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

I gonna connect to you on email, I could not find that...

• Post long source code as attachment, not in the text

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