Apparatus and methods for coordinated static switch operations for load transfers in uninterruptible power supply systems
First Claim
1. A power supply apparatus, comprising:
- an uninterruptible power supply (UPS) having an input configured to be coupled to a first power source and an output configured to be coupled to a load;
a first static switch configured to provide a switchable bypass path from the first power source to the load;
a second static switch controllable to provide a switchable path between the load and a second power source; and
a controller circuit configured to cooperatively control the first and second static switches to transfer the load to the second power source.
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Accused Products
Abstract
A power supply apparatus includes an uninterruptible power supply (UPS) having an input configured to be coupled to a first power source and an output configured to be coupled to a load and a first static switch configured to provide a switchable bypass path from the first power source to the load. The apparatus further includes a second static switch controllable to provide a switchable path between the load and a second power source, and a controller circuit configured to cooperatively control the first and second static switches to transfer the load to the second power source. The controller circuit may be operative to transition the load from a first state wherein the load receives power from the first power source via the first static switch to a second state wherein the load receives power from the second power source while isolated from the first power source.
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Citations
23 Claims
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1. A power supply apparatus, comprising:
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an uninterruptible power supply (UPS) having an input configured to be coupled to a first power source and an output configured to be coupled to a load;
a first static switch configured to provide a switchable bypass path from the first power source to the load;
a second static switch controllable to provide a switchable path between the load and a second power source; and
a controller circuit configured to cooperatively control the first and second static switches to transfer the load to the second power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for controlling load transfers in a power supply system including an uninterruptible power supply (UPS) having an input configured to be coupled to a first power supply and an output configured to be coupled to a load, a first static switch controllable to provide a switchable bypass path between the first power source and the load and a second static switch controllable to provide a switchable path between the load and a second power source, the apparatus comprising:
a controller circuit configured to cooperatively control the first and second static switches to transfer a load coupled to the output of the UPS to the second power source. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of operating a power supply apparatus that includes an uninterruptible power supply (UPS) having an input configured to be coupled to a first power source and an output configured to be coupled to a load, a static switch controllable to provide a switchable bypass path between the first power source and the load, and a second static switch controllable to provide a switchable path between the load and a second power source, the method comprising:
cooperatively controlling the first and second static switches to transfer the load to the second power source. - View Dependent Claims (20, 21, 22, 23)
Specification