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Modulation Techniques | PWM INVERTERS | Modulation Index | DC-AC | Power Electronics

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This power electronics video is an introduction to modulation techniques in pwm inverters for power electronics systems. It also explains unipolar switching vs bipolar switching, and the concept of modulation index.
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Опубликовано:

29 авг 2024

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Комментарии : 15

@rayzhu6735 Месяц назад

Thank you so much for explaining the modulation index. Really appreciate.

@sc0or 6 месяцев назад

This is how a traditional (not UcD) D-class amplifier with a full-bridge output stage works. Can be called an inverter if you like. However for 50/60Hz it's better to use a table with coefficients for a PWM in a microcontroller, rather then all these generators and comparators. Besides, a phase shift switching is simpler to implement with an MCU.

@osamahebala6923 3 года назад

Thanks for your efforts. Great lectures and the previous video as well. I shared your videos with my students ☺️

@Elkhateb 3 года назад

Thank you! It’s my pleasure

@Jaultaub 3 года назад

Thank for the video! Can you make a video going more into depth on the modulation index and how to increase it above 1!

@mohamadsayed7588 3 года назад

Thanks for the nice video. Actually, the square wave has lower harmonics than PWM strategies. Its problem is that it's not smooth.

@Elkhateb 3 года назад

My pleasure! The square wave harmonics are more interfering, so it’s difficult to remove them from the fundamental one. But the pwm output has more distinguished waveform where the fundamental frequency can be obtained using a small filter.

@husseinshutari5209 3 года назад

pretty awesome. but how to select an amplitude and a frequency of carries signal? thank you in advance.

@Elkhateb 3 года назад

It depends on the waveform you want on the output. Th frequency also depends on what type of filter you have.

@mnada72 3 года назад

Thank you, what is the other software you mentioned beside matlab at 11:25 ? I am interested with the operation of the control circuit providing the switching signals to the transistors , can you please share some sources discussing the same

@Elkhateb 3 года назад

I mentioned matlab and plecs.

@mnada72 3 года назад

@@Elkhateb Thank you.