I've run 3 phase inverters on single phase several times with no real
problems. For example my lathe has a 7.5kw motor with a 7.5kw inverter
and it works fine on single phase. I guess it helps that I am using a
240->415 auto transformer which probably has a significantly higher
impedance than a direct mains connection.
Les
I read the article you referenced https://www.precisi
on-elec.com/derate-three-phase-vfd-for-single-phase-power/ but I don't
agree with it because he is simply scaling the input current by the 3 phase
to single phase conversion constant of square root of 3 or 1.73. This
holds true for the input current but not the internal DC bus capacitor RMS
ripple current which causes capacitor heating.
On the other hand there is a huge difference between occasional hobby use
and industrial use so maybe I shouldn't be so finicky.
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