NO BREAK POWER TRANSFER FOR MULTI-SOURCE ELECTRICAL POWER SYSTEM
First Claim
1. A method for transferring power delivery to an electrical bus between a first power source and a second power source, the method comprising:
- regulating, with a voltage regulator, an output voltage of the second power source based at least in part on a measured voltage of the electrical bus;
coupling the second power source to the electrical bus such that the first power source and the second power source are both coupled to the electrical bus for a transfer period;
during the transfer period, allocating power delivery to the electrical bus between the first power source and the second power source such that the second power source provides a controlled power delivery to the electrical bus; and
decoupling the first power source from the electrical bus at the end of the transfer period.
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Accused Products
Abstract
Systems and methods for transferring power delivery between power sources to an electrical bus are provided. More particularly, a multi-source electrical power system can include an electrical bus having at least two power sources that each can be selectively coupled to the electrical bus, for instance, via contactors. At least one of the power sources can include a unidirectional or bidirectional power converter. The electrical power system can further include a control system configured to control the power output (e.g., the output voltage and the output current) of the power converter to provide no break power transfer of power delivery to the electrical bus between the first and second power sources. In example embodiments, the no break power transfer can be achieved by regulating the output current of a power source to a fixed current value and/or by using a virtual resistance programmed into a voltage regulator.
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Citations
20 Claims
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1. A method for transferring power delivery to an electrical bus between a first power source and a second power source, the method comprising:
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regulating, with a voltage regulator, an output voltage of the second power source based at least in part on a measured voltage of the electrical bus; coupling the second power source to the electrical bus such that the first power source and the second power source are both coupled to the electrical bus for a transfer period; during the transfer period, allocating power delivery to the electrical bus between the first power source and the second power source such that the second power source provides a controlled power delivery to the electrical bus; and decoupling the first power source from the electrical bus at the end of the transfer period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 20)
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14. An electrical power system, comprising:
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a first power source; a second power source, the second power source comprising a power converter; an electrical bus configured to be selectively coupled to the first power source and configured to be selectively coupled to the second power source; a control system comprising a current regulator configured to regulate an output current of the power converter, the control system further comprising a voltage regulator configured to regulate an output voltage of the power converter; wherein when the control system receives a transfer signal indicative of initiating a transfer of power delivery to the electrical bus from the first power source to the second power source, the voltage regulator is configured to regulate the output voltage of the second power source to match a voltage associated with the electrical bus, and a current setpoint for the current regulator is adjusted to a fixed current setpoint of about zero amperes. - View Dependent Claims (15, 16, 17)
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18. A method for transferring power delivery to an electrical bus between a first power source and a second power source, the method comprising:
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setting a current setpoint of a current regulator associated with the second power source to a fixed current setpoint; coupling the first power source to the electrical bus such that both the first power source and the second power source are connected to the electrical bus for a transfer period; and during the transfer period, regulating an output current of the second power source based at least in part on the fixed current setpoint to provide a controlled power delivery to the electrical bus from the second power source; and decoupling the second power source from the electrical bus at the end of the transfer period. - View Dependent Claims (19)
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Specification