BAE Systems is an innovator and leader in platform electrification. Using our proven HybriDrive® series electric propulsion system, we are advancing zero-emission bus technology. The HybriDrive propulsion system is best known for dramatically improving the efficiency and fuel economy of more than 6,000 conventional transit buses worldwide. Now a derivative of that system is being used to advance electrification in transit, producing a wide range of benefits including the electrification of vehicle accessories and enabling zero-emission buses such as HydroGen/Fuel Cell.
For more than 15 years, we have partnered to demonstrate and deploy fuel cell bus technology with teammates ElDorado National and Ballard Power Systems to commercialize the American Fuel Cell bus model.
Power is blended from the high voltage batteries and hydrogen fuel cell engine through power electronics to provide propulsion at the wheels and to energize electrified accessories. Regenerative braking is utilized to capture kinetic energy during braking and store it in the high voltage batteries. Additionally, the bus is capable of low power, short duration driving solely on the battery when the high voltage batteries have sufficient charge. This feature allows the bus to be moved at the depot without having to start the fuel cell engine.