I think it is an issue, that an half empty battery provides less RPMs to the props,
and that the internal resistance of the battery causes a significant drop of voltage when going full throttle. This has caused a motor-out (or better: a battery-out) on my setup, since my BMS protects the battery by shutting it off, when the minium set voltage has been reached.
What do you think of a circuit that stabilizes the voltage at a set value, such as 50 Volts for example? This would result in always the same Voltage at the input of the ESCs, unrelated to the batterie’s actual voltage, and X% Throttle will always give the same result in RPM and thrust.
I was searching online for a step up (or step down) dc-dc converter with a possible output of 60 Volts, but didn’t find anything that would support more than 30A…
Until a colleague found something different:
(it’s the german ebay, but the product’s description is in english)
It is a DC Motor PWM controller for up to 300A and the ability to program the output voltage.
Any input from you engineers?