An electrical energy capture system, as may be carried on a hybrid energy,
electro-motive, self-powered traction vehicle, is provided. The system
may be used for storing electrical power generated on the vehicle and for
discharging the stored electrical power for use on the vehicle. The
system includes circuitry connected to a plurality of electrical energy
storage devices connected in parallel circuit to one another. The
circuitry may be configured to establish a respective circuit path for
charging and discharging electrical energy from each energy storage
device with respect to a DC bus. The circuitry is further configured to
block a flow of electrical current from any one of the storage devices to
any of the other storage devices, thereby avoiding flow of currents that
could otherwise circulate among the electrical energy storage devices due
to electrical imbalances that may occur in one or more of the electrical
energy storage devices.