Patent ID: 7782015

Claim:
A system for producing electrical power to a load, comprising: a) a first bank of batteries; b) a second bank of batteries; c) an inverter bank for producing ac; d) a switch that alternately connects one of the first or second battery banks to the load and to the inverter bank with the other of the first and second battery banks being disconnected from the load and the inverter bank; e) a motor connected to the inverter bank; f) an alternator bank powered by the motor, the alternator bank having an electrical output that is connected to the other of the first and second battery banks; g) a timer connected to the switch, the timer periodically switching the switch; h) a motor controller connected between the inverter bank and the motor, the motor controller regulating the speed of the motor; i) the inverter bank produces three phase ac, the motor is a three phase motor.