Patent ID: 8543262

Claim:
A power control system, comprising: a power source; an electric machine; an electrical load coupled to the electric machine; a prime mover coupled to the electric machine; a mechanical load coupled to the prime mover; and a power control module coupled to the power source and the electric machine, wherein the power control module is configured to operate the electric machine between: a generating mode supplying power to the electrical load, according to a power control strategy defined by equations comprising: φ ag =φ fa +φ sa Eq. (1): where φ ag is a flux in air-gap, φ fa is a flux produced by a rotor in a stator windings of the electric machine and φ sa is a flux caused by a stator current I a E ag =E fa +E sa Eq. (2): where E ag is a voltage induced by φ ag , E fa is a voltage induced by φ fa and E sa is a voltage drop in inductance of an armature in the electric machine, and V a =E ag +( R a +( jωL a ) I a Eq. (3): where V a is the terminal voltage, R a is the armature resistance, ω=angular speed, j is a complex operator, L s is synchronous reactance and a motoring mode driving the mechanical load.