Multi-port buck-boost converter and method of control
AssigneeOtis Elevator Company
InventorBen GUO
Life of this patent
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Abstract
An illustrative example embodiment of a buck-boost converter includes at least three input/output ports, at least three sets of switches, and at least two ripple current limiters. One of the sets of switches is associated with each of the input/output ports. Each of the ripple current limiters is associated with a respective one of the sets of switches between the associated set of switches and another one of the sets of switches.
Claims15
A buck-boost converter, comprising:
- at least three input/output ports;
- at least three sets of switches, one of the sets of switches being associated with each of the input/output ports;
- and
- at least two ripple current limiters, each of the ripple current limiters being associated with a respective one of the sets of switches between the associated set of switches and another one of the sets of switches.
A method of controlling a buck-boost converter including at least three input/output ports and at least two associated ripple current limiters, each of the input/output ports having a plurality of associated switches, the method comprising:
- providing synchronized switch activation signals to the switches that have one side connected to a positive terminal of the associated input/output port, the synchronized switch activation signals having the same phase over at least a majority of a cycle;
- and
- providing other synchronized switch activation signals to the switches that have one side connected to a negative terminal of the associated input/output port, the other synchronized switch activation signals having the same phase over at least a majority of the cycle.
Dependencies are inferred from the claim text.