The present invention provides a control system for a redundant prime mover system
to drive a machine having an engine coupled to the machine, and a motor/generator
coupled to the machine and an electrical network connection. The controller operates
the engine and the motor/generator in three or four operating modes. The first
operating mode drives the machine with the engine. The second operating mode drives
the machine with the motor/generator. The third operating mode drives the machine
and the motor/generator with the engine such that the motor/generator generates
electricity for delivery to the electrical network connection. Alternatively, the
third operating mode drives the machine with both the engine and the motor/generator.
This alternate operating mode can also be included as a fourth operating mode.
