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> The system relies on AI to optimize the solar array’s output and operate the motor at 88 percent efficiency; real-world DC electric motors have efficiencies o
by elihu 3y ago
> The system relies on AI to optimize the solar array’s output and operate the motor at 88 percent efficiency; real-world DC electric motors have efficiencies of 75 to 80 percent.
Meanwhile AC permanent magnet motors like the ones used in recent EVs are typically somewhere around 95% efficient as long as they aren't too far outside their optimal RPM/power range.
AC Induction and series-wound DC motors tend to be somewhere around 88%.
- hinkley 3y agoWhat's the conversion efficiency of DC-AC these days?
- deleted 3y ago[deleted]
- elihu 3y agoI'm not sure. There must be some losses, but considering that motor controllers these days are fairly small and only need some modest active cooling I'd guess they're pretty efficient. For example, the motor controller that goes with the Netgain Hyper9 (not exactly the most cutting-edge drive system) can be run without any cooling at all, though it's highly recommended to connect it to water cooling so it doesn't overheat and derate itself. https://www.evwest.com/catalog/product_info.php?products_id=482 https://www.evwest.com/catalog/product_info.php?products_id=...