How do I plot this square waveform using given equations for a SHM

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Yuehan Zhang
Yuehan Zhang 2021-5-23
回答： Joel Van Sickel 2021-5-24
Hi guys, I have been struggling to plot this quasi square waveform using the given equation with the VDC, three alpha values.
I am doing the SHM for a three angle control techiniques to mitigate specific harmonics in output voltage of an H-bridge inverter.
I tried many methods but all I got is still not a square waveform

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回答（1 个）

Joel Van Sickel
Joel Van Sickel 2021-5-24
Hello Yuehan,
It looks like the code you shared is an image? Can you share the text. It also looks like you are psasing pi/6 for alpha1 alpha2 and alpha 3, however, they need to be different values or vo1 vo2 and vo3 will not be different. Another issue is that this is an infinite series, and it looks like you are plotting up to the n =5, but you'll need to go much higher than that to get anything that actually looks like a square wave.
Regards,
Joel

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