Patent ID: 8427083
Filing Date: 2013-04-23
Classification: H02K

Abstract:
1. A four-stage power distribution system comprising: a first stage comprising (i) an inverter configured to receive a first direct current and to generate a first alternating current, (ii) a frequency drive configured to receive the first alternating current and to generate a second alternating current; and (iii) an electric motor configured to receive the second alternating current and to rotationally drive a driveshaft; a second stage comprising (iv) a flywheel drivably attached to the driveshaft; a third stage comprising (v) a first alternator drivably connected to the driveshaft and configured to generate a third alternating current, and (vi) a first rectifier configured to receive the third alternating current and to generate a second direct current; a fourth stage comprising (vii) a first charge control switch configured to receive the second direct current, and (viii) a first plurality of batteries; wherein the first charge control switch sequentially transitions the plurality of batteries between a charging configuration wherein at least one of the plurality of batteries is charged by the second direct current and a load configuration wherein at least one of the plurality of batteries provides the first direct current to the inverter; and (ix) a master control switch operably connected to control the first charge control switch.