Tuesday, February 25, 2020

Hitting 70 volts - in preparation for the new DC-DC Buck Converter

So last year I reached 80 volts in highest gear. But now I have a slightly smaller motor and slightly smaller bicycle - so I reached 70 volts. I don't have my multimeter attached anymore to the connection to the generator - so I can not monitor my volts while charging the generator. I have to be below 36 volts to charge the generator - with the DC-DC buck converter I have.

Tomorrow I'm supposed to get a bigger DC-DC buck converter - so then I can go up to 75 volts while still charging the generator! This means I can pedal as fast as I want - since my fastest speed with no load or resistance is 70 volts.

So trying to read amps with no load hooked up - it doesn't work. I don't get as many amps due to the back EMF or reverse current aka the torque.

So we shall see what happens tomorrow. I need to first power the DC-DC buck converter with a battery so I can set up the voltage and amp settings - I need at least 12.6 volts. So I'll set it at 12. 7 volts for charging. I'll set the amps to 6 amps.

I really have no idea how many amps I'll get. Hopefully it will be more than 4 - hopefully it will be over 5 amps!! That would be very exciting. The new DC-DC Buck converter is supposed to tell me both amps and volts while I am charging.


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