space vector modulation fpga

H

hasanabouali

Guest
i really wanna have the code written by vhdl language implement space
vector modulation i will be very very thankfull, if u get it to me be sure
i can help u in any thing related to embeded system
 
i wanna to implement space vector modulation by FPGA
then
i control the speed of an induction motor

the problem is sin & cos in fpga
i hope any one can show me the way, i hope also there is a simulation
prog. or where can i find good papers.
 
"hasanabouali" <hasanabouali@hotmail.com> wrote in message news:<34366007e3b8dcd50b5c288a10b0269e@localhost.talkaboutelectronicequipment.com>...
i wanna to implement space vector modulation by FPGA
then
i control the speed of an induction motor

the problem is sin & cos in fpga
i hope any one can show me the way, i hope also there is a simulation
prog. or where can i find good papers.
Click to expand...
Hi,
Its not difficult, you can do that with look up tables if the
resolution requirement is not high or best go for cordic
implementation. it will converge rapidly within a few iterations. you
can check out this document, its a good ref to cordic in fpga.
http://www.andraka.com/papers.htm
 
In the name of Allah the most merciful
Thank you zingafriend very much for answering me But what I need exactly
is:
I need to read three voltages and convert them to just two this is not a
problem
But I need to take these values and implement these equation
θ=cos-1(Vα/Vβ) & ta = U[cos() –
(3-˝)sin()] & tb = 2U(3-˝)sin()
this is my vision, our supervisor refuse to tell us more for now.
**I noticed that in the cordic algorithm which you told me about it
doesn't contain VHDL code.
Thank you anyway if you don't have a problem to talk to me online I will
be happy for that.
Also my e-mail hasanabouali@hotmail.com if you want to add me to ur
messenger. IF u have any question about power electronics don't hesitate
just tell me if I can't help u I will find someone can.
urs:hasan
 
But I need to take these values and implement these equation
θ=cos-1(Vα/Vβ) & ta = U[cos() –
(3-˝)sin()] & tb = 2U(3-˝)sin()

this is my vision, our supervisor refuse to tell us more for now.
**I noticed that in the cordic algorithm which you told me about it
doesn't contain VHDL code.
Click to expand...
check

http://www.opencores.org/browse.cgi/by_category

there are some cordic implementations.

"look up table" is also a good idea.

yusuf
 
dear yusuf

thank you, i realy want the vhdl code that implement sin or cosine, i
can't understand this method.
do you have solved example which already implement cosine by cordic
urs:hasan
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top