Methods, apparatuses, media and signals for supplying energy to an energy
bus in communication with an energy generating device and with a regenerative braking
system in a hybrid electric vehicle are disclosed. One such method includes controlling
power supplied by the energy generating device to the energy bus, in response to
a braking signal indicative of user brake actuation. Another such method involves
controlling energy contributions onto the energy bus from the energy generating
device and from the regenerative braking system respectively, to prevent the contributions
from exceeding a desired total energy contribution. The energy generating device
may include an auxiliary power unit, such as fuel cell, or a generator coupled
to a prime mover such as an internal combustion engine, for example.
