System and method of over voltage control for a power system
First Claim
Patent Images
1. A power system that powers an electric machine, comprising:
- a converter operable to convert alternating current (AC) power received from the electric machine into direct current (DC) power when the electric machine is operating in a generation mode;
a high voltage direct current (HVDC) bus configured to receive DC power from the converter;
at least one component that enables operation of the power system; and
a backup power supply operable to receive a status signal corresponding to an operating condition of the component, operable to receive a signal corresponding to a detected operating voltage of the HVDC bus, and operable to communicate a signal to the power converter when both the detected operating voltage is greater than a threshold voltage and when the component is not operational.
5 Assignments
0 Petitions
Accused Products
Abstract
A system and method for preventing over voltages in a power system coupled to an electric machine are disclosed. Briefly described, one embodiment is a method comprising detecting an operating voltage on a high voltage direct current (HVDC) bus, determining if at least one component of the power system is operational, communicating a signal to a power converter of the power system when the detected operating voltage is greater than a threshold voltage and when the component is not operational, and shorting together a plurality of terminals of the electric machine.
33 Citations
45 Claims
-
1. A power system that powers an electric machine, comprising:
-
a converter operable to convert alternating current (AC) power received from the electric machine into direct current (DC) power when the electric machine is operating in a generation mode; a high voltage direct current (HVDC) bus configured to receive DC power from the converter; at least one component that enables operation of the power system; and a backup power supply operable to receive a status signal corresponding to an operating condition of the component, operable to receive a signal corresponding to a detected operating voltage of the HVDC bus, and operable to communicate a signal to the power converter when both the detected operating voltage is greater than a threshold voltage and when the component is not operational. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 43)
-
-
16. A method for preventing over voltages in a power system coupled to a permanent magnet electric machine, comprising:
-
detecting an operating voltage on a high voltage direct current (HVDC) bus during continued operation of said power system; determining if at least one component of the power system is operational; communicating a signal to a power converter of the power system when the detected operating voltage is greater than a threshold voltage and when the component is not operational; and shorting together a plurality of terminals of the electric machine. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 44)
-
-
27. A system preventing over voltages in a power system coupled to an electric machine, comprising:
-
means for detecting an operating voltage on a high voltage direct current (HVDC) bus; means for determining if at least one component of the power system is operational; means for communicating a signal to a power converter of the power system when the detected operating voltage is greater than a threshold voltage and when the component is not operational; and means to short a plurality of terminals of the electric machine together when the signal is communicated. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 45)
-
-
37. A processor-readable physical storage medium having stored thereon instructions configured to cause a processor to prevent over voltages in a power system coupled to an electric machine by performing the steps of:
-
determining an operating voltage on a high voltage direct current bus; determining if at least one component of the power system is operational; and generating a signal that is communicated to a power converter of the power system when the determined operating voltage is greater than a threshold voltage and when the component is not operational, to cause shorting together of a plurality of terminals of the electric machine. - View Dependent Claims (38, 39, 40, 41, 42)
-
Specification