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How do I generate pulses from the block PWM Generator to operate the switches if they are more than four?

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SALAH alatai
SALAH alatai on 25 Dec 2020
Answered: Joel Van Sickel on 31 Dec 2020
Hello every one
I hope to find any ideas for my inquire.
my question as in the picture there are two models, the left one five-level cascaded with PWM pulses to operate the switches, and the right one is a boost converter with a
PID controller to operate one switch. so here I want to use PI control to on five-level cascaded model but after PI block
How do I generate the pulses for 8 switches to operate them?

Answers (2)


Joel Van Sickel
Joel Van Sickel on 31 Dec 2020
Hello Salah,
you need to determine the appropriate duty cycle for each of your half bridges. I see 4 half bridges. So you need 4 duty cycles to generate 4 pwm trains and 4 complementary pwm trains. My colleague recommended you use multi-level and MMC approaches in another of your questions, and you told him that is not what you wanted. In that case, you have to create your own algorithm to convert the scalar output of a PID controller into 4 seperate duty cycles. I suggest looking at examples of MMC and multi-level control in our example list.
Regards,
Joel

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