Patent ID: 7109686
Filing Date: 2006-09-19
Classification: B60L,Y02T

Abstract:
1. A system for precharging an ultracapacitor energy storage cell pack, comprising: an ultracapacitor pack, a high power DC bus, an electro-magnetic braking regeneration system, and a breaking resistor to dissipate power from the electro-magnetic braking regeneration system; means for switching the braking resistor in series with the ultracapacitor pack; means for switching the braking resistor in series with the ultracapacitor, with the high power DC bus; means for determining when to disconnect the braking resistor in series with the ultracapacitor pack and connect the ultracapacitor pack directly with the high power DC bus; means for disconnecting the braking resistor in series with the ultracapacitor pack and connecting the ultracapacitor pack directly with the high power DC bus.