I've been researching how to build such a drive for about a month now, do you have any recommendations on how to implement the switching algorithms after the starting fixed frequency PWM?
Since the method of switching is to compare a sine wave and a triangular wave, in synchronous mode the initial phase of one phase is aligned and the number of triangular waves is an integer multiple of the sine wave. This allows you to see an integer multiple of the number of waveforms. It's not very complete, but I've included a link to the program in the description, so I hope it will be helpful.
@@iyuyuiqpor Thank you so much, I greatly appreciate you taking time to add it to your description and describe it to me. It really helps to see how others have implemented it! Someday I am hoping to run it on a STM32 microprocessor to emulate the Keikyo 1000 train line GTO inverter system.
I believe that it is not possible to reproduce SHE (Selective Harmonics Eliminating) modulations, which are widely used in subway trains, using a conventional PWM algorithm with triangle carrier frequency.🤔
Thank you for pointing that out. As this is my first time making an inverter, I don't have a detailed understanding of harmonic removal and haven't taken any measures. I was just trying to make a sound similar to that of a train. I'm going to study SHE modulation so I can reproduce it properly!
@@iyuyuiqpor Modulations and algorithms controlling synchronous and asynchronous motors is a very extensive and interesting topic. I wish you success 🤩👍
こういうのをチャカチャカっと作れる人って、知識もそうだしいざ作ろうって言う原動力にも尊敬しちゃう
面白いです。
ESP32でPWMできるんですね。
コメントありがとうございます！
割り込みするたびに位相をもとに信号オンオフの切り替えをしてます。
なんかdigitalWrite()は処理が遅いとか聞いたので、レジスタを書き換えるみたいなやつやってます。
Do a do-re-mi-fa inverter on it pls, subscribed to u
オープンループ制御ですか？
本物はフィードバック制御も持ってますよ♪
おっしゃる通りです。音を聞きたい一心で作ってました。
クローズドループ制御についても実装できるように頑張ります！
I've been researching how to build such a drive for about a month now, do you have any recommendations on how to implement the switching algorithms after the starting fixed frequency PWM?
Since the method of switching is to compare a sine wave and a triangular wave, in synchronous mode the initial phase of one phase is aligned and the number of triangular waves is an integer multiple of the sine wave. This allows you to see an integer multiple of the number of waveforms. It's not very complete, but I've included a link to the program in the description, so I hope it will be helpful.
@@iyuyuiqpor Thank you so much, I greatly appreciate you taking time to add it to your description and describe it to me. It really helps to see how others have implemented it! Someday I am hoping to run it on a STM32 microprocessor to emulate the Keikyo 1000 train line GTO inverter system.
I believe that it is not possible to reproduce SHE (Selective Harmonics Eliminating) modulations, which are widely used in subway trains, using a conventional PWM algorithm with triangle carrier frequency.🤔
Thank you for pointing that out.
As this is my first time making an inverter, I don't have a detailed understanding of harmonic removal and haven't taken any measures.
I was just trying to make a sound similar to that of a train.
I'm going to study SHE modulation so I can reproduce it properly!
@@iyuyuiqpor Modulations and algorithms controlling synchronous and asynchronous motors is a very extensive and interesting topic. I wish you success 🤩👍