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Gh0$T
Member

Join Date: Feb 2009
Posts: 9

VHDL Coding for Space Vector PWM

04/08/2009 1:48 AM

Hello friends....Since Fpga doesnt understand trignometric function I pre calculated all the time values (T1,T2,T0/2) for each sector seperately and at each sector one of my time period is always negative...I dont know whether I am proceeding in a right way or not?? ....And also I dont know how to generate a look up table for this.....pls pls if any one can help me I would be really thankful to you....
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bhankiii
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Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: El Lago, Texas, USA
Posts: 2639
Good Answers: 65
#1

Re: VHDL Coding for Space Vector PWM

04/08/2009 10:40 AM

VHDL does understand trig.

Look up "cordic" for the details. If you download Actels' LIbero s/w (free) there is a code generator function that will create a cordic block for you.
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