On 7/14/21 11:50 AM, Paul Koning via cctalk wrote:
On Jul 14, 2021, at 12:33 PM, Guy Sotomayor via cctalk <[email protected]>
wrote:
I've found 2 issues w.r.t. "rotary converters".
* They *always* consume lots of power regardless of the actual load
Really? That seems odd. A rotary converter is merely a three phase motor with
run capacitors. Just like any other motor, its power demand depends on the
applied load. A normal motor spinning without anything connected to it
consumes power to overcome electrical, magnetical, and friction losses, but
none of these are particularly large.
Induction motors draw relatively constant CURRENT, but the
phase angle changes with load.
So, the real power draw increases with increasing load.
If you assume power equals current times voltage, then you
get a wrong indication, by neglecting oiwer factor.
Jon
