In article ,
says...

This surprisly low output is a result of the different behaviour
of motors and generators. In a motor, series losses necessitate extra
input voltage to achieve the design speed. When operating as a
generator series losses need extra speed to achieve the design output
voltage.

Excellent description. It convinced me.

Jim

==================================================
please reply to:
JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com
==================================================