A propulsion system comprising an electric drive, a DC link electrically coupled to the electric drive, and a first energy storage system electrically coupled to the electric drive, the first energy storage system comprising at least a high specific-power energy storage device is shown. The propulsion...http://www.google.fr/patents/US8026638?utm_source=gb-gplus-shareBrevet US8026638 - System for multiple energy storage and management and method of making same
System for multiple energy storage and management and method of making same
