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AssigneeEaton Corporation
InventorsTodd M. Lathrop, Bert Popovich, Ronald D. Hartzel, David N. Alchier, Nathan J. Weister
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A multi-mode transfer switch selectively operates in a first operating mode in which the utility source alone is connected to the load bus, a second operating mode in which only the microturbine is connected to the load bus, and a third operating mode in which both sources are connected to the load bus in parallel. The microturbine is commanded to operate in a voltage mode when connected alone to the load bus and in a current mode when connected in parallel with the utility source. If the utility source fails while operating in parallel with the microturbine, the utility source is disconnected from the load bus and the microturbine is reconfigured in a voltage mode. The transfer controller sends a wake-up signal to the microturbine upon loss of power for starting and providing power to the load bus.
A multi-mode transfer switch for selectively connecting a utility source and a microturbine to a load bus, the multi-mode transfer switch comprising:
A method of energizing a load bus from a utility source and a microturbine comprising the steps of:
A method of energizing a load bus from a utility source and a microturbine comprising the steps of:
Dependencies are inferred from the claim text.