Starting/generating system with multi-functional circuit breaker
AssigneeHamilton Sundstrand Corporation
InventorsGregory I. Rozman, Matthew L. Wilhide
Life of this patent
Estimating the term…
Abstract
A pre-charge circuit limits in-rush currents on a direct current (DC) link that includes a first DC link bus and a second DC link bus. The pre-charge circuit includes a switching device connected in series with the first DC link bus. The switching device has an ON state in which power flow is enabled on the DC link and an OFF state in which power is disabled on the DC link. A controller selectively modulates the state of the switching device to limit in-rush currents on the DC link.
Claims13
A pre-charge circuit for limiting in-rush current on a direct current (DC) link having a first DC link bus and a second DC link bus, the pre-charge circuit comprising:
- a switching device connectable in series with the first DC link bus, wherein the switching device operates in either an ON state or an OFF state;
- and
- a controller connected to selectively modulate the state of the switching device during a pre-charge cycle to limit in-rush currents on the DC link.
A method for limiting in-rush currents on a direct current (DC) link having a first DC link bus and a second DC link bus, the method comprising:
- modulating a state of a switching device connected in series on the first DC link bus to limit in-rush currents during pre-charge of a capacitor connected between the first DC link bus and the second DC link bus.
Dependencies are inferred from the claim text.