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Brief tour of Banki turbine hydro system

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Uploaded by on Mar 6, 2007

Built from scrap steel and using home-brew electronics, this hydro-turbine generates a steady 500W at 240VAC all winter long.

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Howto & Style

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Uploader Comments (linschotenr)

  • How this system maintain constant frequency and vpltage?

  • @HungryGreeny

    Frequency is designed in when building the wheel itself but It is very coarsely regulated. Only voltage is truly regulated using pulse-width modulated diversion controllers connected to hot water resistance heaters. This unit is primarily designed to charge large battery banks. That Dc power is then converted to proper AC via sine-wave inverters (Outback, Samlex)

    R.

  • hello from Delaware usa. I wonder if i can bum a bit of info from you. I have a 1hp pool pump, 1 phase. What's a guy have to do to make power running it backwards? reverse connections or add a part? . one last question all things equal which is preferred, smaller generator run faster or larger generator slower? I understand the availability of torque to get it moving but besides that ? is one better or just depends on situation? thanks for letting me pick your brain. love your setup.

  • A 1 ph motor can be quite difficult to self-excite. If it is capacitor start, bridge the start switch, remove the cap and put a 20 to 40uF RUN capacitor (not START) across the main winding. For other motor types you will need to Google your options. Best choice is a 3-phase motor. Speed of generator is pretty much determined by RPM delivered by turbine. In my case I was getting around 300 rpm from the wheel so my only choice was a 1200RPM 6 pole motor to lower transmission losses.

    Rob

  • unreal. great work.

  • Thank you both.

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All Comments (26)

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  • excellent vid mate its given me some great ideas

  • your audio sucks, get a better quality vid man if you can. thnx. good video.

  • 74DC,

    Missed part of your question. Did the math first to get in the ball park, then fine tuned by hooking the genrator up to a 1 hp DC motor via a Variac and ended up adding some more capacitance. I believe the final C/C2 combo was 8/16mF.

  • mire!

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