UNINTERRUPTIBLE POWER SYSTEMS USING CURRENT SOURCE RECTIFIERS AND METHODS OF OPERATING THE SAME
First Claim
1. An apparatus comprising:
- a current source rectifier circuit having an input configured to be coupled to an AC power source and an output configured to be coupled to a load;
a coupling circuit configured to couple a DC power source to the current source rectifier; and
a control circuit configured to selectively operate the current source rectifier circuit and the coupling circuit to generate a DC output from the AC power source and the DC power source.
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Accused Products
Abstract
An apparatus includes a current source rectifier circuit having an input configured to be coupled to an AC power source and an output configured to be coupled to a load, a coupling circuit configured to couple a DC power source to the current source rectifier, and a control circuit configured to selectively operate the current source rectifier circuit and the coupling circuit to generate a DC output from the AC power source and the DC power source. In some embodiments, the control circuit may be configured to operate the coupling circuit to provide a DC/DC converter circuit that uses an energy storage inductor of the current source rectifier circuit. The apparatus may further include a freewheeling diode shared by the current source rectifier circuit and the DC/DC converter circuit. Such apparatus may be used, for example, in DC UPS applications.
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Citations
20 Claims
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1. An apparatus comprising:
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a current source rectifier circuit having an input configured to be coupled to an AC power source and an output configured to be coupled to a load; a coupling circuit configured to couple a DC power source to the current source rectifier; and a control circuit configured to selectively operate the current source rectifier circuit and the coupling circuit to generate a DC output from the AC power source and the DC power source. - View Dependent Claims (2, 3)
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4. An apparatus comprising:
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a current-source rectifier configured to be coupled to an AC power source; a DC/DC converter configured to be coupled to a DC power source and sharing an energy storage inductor with the current-source rectifier; and a control circuit configured to selectively operate the current-source rectifier and the DC/DC converter to produce a DC voltage at an output node coupled to the inductor. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A UPS comprising:
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an input port configured to be coupled to an AC power source; an active rectifier circuit having an input coupled to the input port; an inductor having a terminal coupled to an output of the active rectifier circuit; and a switch configured to couple a DC power source to the terminal of the inductor. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification