Charging an energy storage device with a variable speed generator

A power management system comprising:

• a variable speed generator that provides a voltage output to a bus, wherein the bus is adapted to be connected to a load and an energy storage device;
• a generator controller that controls the speed of the variable speed generator, wherein the generator controller monitors a charge level of the energy storage device, wherein the generator controller supplies power from the energy storage device to other components in the power management system besides the load, wherein the generator controller operates in a lower power state when the generator controller determines that the variable speed generator does not need to operate based on the charge level of the energy storage device.

A power management system comprising:

• a variable speed generator that provides a voltage output to a bus that is adapted to be connected to a load and an energy storage device;
• a generator controller that controls the speed of the variable speed generator, wherein the generator controller obtains data relating to the charge level of the energy storage device, wherein the generator controller operates the variable speed generator based on the data, wherein the generator controller operates in a lower power state when the generator controller determines that the variable speed generator does not need to operate based on the charge level of the energy storage device.