Patent ID: 7952306
Filing Date: 2011-05-31
Classification: B60L,Y02T

Abstract:
1. A method of operating a power system, comprising: running one or more of a plurality of generator units that each include a power source, a first electric generator, and a second electric generator; supplying electricity from one or more of the first electric generators of the one or more running generator units to a first set of one or more electric power loads; supplying electricity from one or more of the second electric generators of the one or more running generator units to a second set of one or more electric power loads wherein the power system is part of a mobile machine, wherein supplying electricity to the first set of one or more electric power loads includes supplying electricity to one or more electric propulsion motors to propel the mobile machine; and wherein supplying electricity to the one or more electric propulsion motors to propel the mobile machine includes allowing the voltage of the electricity supplied to the one or more electric propulsion motors to vary dependent on the speed of the electric propulsion motors.