about space vector pwm and full compare pwm block

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Submitted by poornima on Thu, 03/18/2010 - 14:14 

 

hi! can anyone explain what is the difference between these two blocks???? 1) vissim/dsp -f281x full compare pwm block 2) vissim/dsp- TI 16 bit digital motor space vector pwm block

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  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    Submitted by Anders89 on Thu, 03/18/2010 - 22:46.

    Also, the full compare PWM lets you select Timer 1 (EVA) or Timer 3 (EVB), plus you can set deadband for IGBT driving, and it generates more efficient in-line code. The 4th pin of 'space vector PWM' takes a value between 0 and .9997 that controls the fraction of full PWM switching frequency that is desired. This is explained in the help document that you get if you click the help button. The FullCompare PWM requires scaling of the -1/+1 range from the 'Space Vector Generator (Mag Freq)' block to 0/+1. The 'Space Vector' PWM does not require such scaling.

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