Hi,all

To calculate the efficiency of an electrostatic micromotor,
I need to define what the power in is.
You know, generally the efficiency is defined as
Power out/ Power in.
However, because there is no current ideally in the electrostatic
motor, I cannot apply the relationship of Power in=VI (voltage*current).

Does anyone have an idea how to define the efficiency of electrostatic
motors?

Thank you.

Sanghoon Lee