Patent ID: 8688286
Filing Date: 2014-04-01
Classification: H02J,Y02E

Abstract:
1. In a system which generates a variable amount of electric power based on fluctuations in the amount of power received from a power source, a method for controlling an amount of power delivered by the power source to a power line, comprising: providing a power subsystem comprising the power source and an energy storage unit; operating the energy storage unit (i) to receive and contain portions of energy generated by the system to limit power provided directly to the power line by the power source and (ii) to provide portions of energy stored therein to the power line to supplement output power directly output from the power source to the power line; defining maximum and minimum limits in a range of change in the power delivered to the power line by the power subsystem; during each in a sequence of time periods, defining an amount of power to be delivered by each of the power source and the energy storage unit to the power line based on (i) a determined amount of power available for delivery directly to the power line from the power source, (ii) a determined level of energy in the storage unit available for delivery to the power line, and (iii) the limits in the range of change in the power to be delivered by the power subsystem to the power line wherein: output power available for output to the power line directly from the power source during a first period in the sequence of time periods is compared with the power received by the line during a second time period occurring prior to the first period, and when the power available during the first period exceeds the amount of power received by the line during the second and prior time period: