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US 10,097,109 B1Granted
Three-level voltage bus apparatus and method
AssigneeFuturewei Technologies, Inc.
InventorsLiming Ye, Heping Dai
Life of this patent
Estimating the term…
Abstract
An apparatus includes a first switch and a first capacitor connected in series between a first voltage bus and a second voltage bus, a second capacitor and a second switch connected in series between the first voltage bus and the second voltage bus and a diode coupled between a common node of the first switch and the first capacitor, and a common node of the second capacitor and the second switch.
Claims20
An apparatus comprising:
- a first switch and a first capacitor connected in series between a first voltage bus and a second voltage bus;
- a second capacitor and a second switch connected in series between the first voltage bus and the second voltage bus;
- and
- a diode coupled between a common node of the first switch and the first capacitor, and a common node of the second capacitor and the second switch, wherein the diode is coupled between the first capacitor and the second capacitor.
1 more element
A method comprising:
- detecting a voltage across a first voltage bus and a second voltage bus of a three-level voltage bus apparatus;
- turning off a first switch and a second switch of the three-level voltage bus apparatus when the voltage across the first voltage bus and the second voltage bus of the three-level voltage bus apparatus is greater than a first voltage threshold, wherein the first switch and a first capacitor are coupled in between the first voltage bus and the second voltage bus, and the second switch and a second capacitor are coupled in between the first voltage bus and the second voltage bus;
- and
- turning on the first switch and the second switch of the three-level voltage bus apparatus when the voltage across the first voltage bus and the second voltage bus of the three-level voltage bus apparatus is less than a second voltage threshold, wherein the first voltage threshold is greater than the second voltage threshold.
1 more element
A system comprising:
- a three-level voltage bus apparatus configured to be connected with a power source, wherein the three-level voltage bus apparatus comprises:
- a first switch and a first capacitor connected in series between a first voltage bus and a second voltage bus;
- a second capacitor and a second switch connected in series between the first voltage bus and the second voltage bus;
- and
- a diode coupled between a common node of the first switch and the first capacitor, and a common node of the second capacitor and the second switch;
- a first power converter having inputs connected to the first capacitor;
- and
- a second power converter having inputs connected to the second capacitor, wherein outputs of the first power converter and outputs of the second power converter are connected in parallel.
5 more elements
Dependencies are inferred from the claim text.