Cascaded H-Bridge Converters: Level-Shifted PWM

[@ebarbie5016]

It's inaccurate to say that cells operate at different switching frequency in LS-SPWM. all cells are switched at a fixed carrier frequency, but in a discontinues switching mode (part-time chopping and part time conducting or misconducting). The term "average switching frequency" is used only for variable frequency PWM, such as hysteresis control. Here, a more suitable term would be either average of pulses per period, or, average switching losses, in which case they are about 1/(N-1) lower than switching losses of PS-SPWM operating at same carrier frequency and load, and not 1/N, as you claim. Also, there are more than one option to distribute the carriers. You can use only two carriers with two source signals 180 degrees out of phase.

[@sourabhahuja1686]

well explained cover each and every topic thank you sir

[@hafizmuhammadumer10]

Nicely explained. Very helpful video.

[@pritamdas4724]

Thanks sir... nicely explained

[@shashishekhartripathi6143]

Thanks .

[@muhammadosama3358]

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