Twin boost converter with integrated charger for UPS system
First Claim
1. A power converter, comprising:
- an AC power input having a phase input connection and a neutral input connection, the AC power input being configured to receive an AC input voltage;
a backup power input configured to receive a backup voltage from a backup power source;
a first capacitive element configured to store a positive DC output voltage with respect to the neutral input connection;
a second capacitive element configured to store a negative DC output voltage with respect to the neutral input connection; and
a power converter circuit having a first inductive element and a second inductive element, the power converter circuit being coupled to the AC power input, the backup power input, the first capacitive element and the second capacitive element, the power converter circuit being configured to;
in a line mode of operation and during a positive portion of the AC input voltage, convert the AC input voltage into the positive DC output voltage through the first inductive element and provide a charging voltage to the backup power source through the second inductive element using the negative DC output voltage stored in the second capacitive element; and
in the line mode of operation and during a negative portion of the AC input, convert the AC input voltage into the negative DC output voltage through the second inductive element and provide the charging voltage to the backup power source through the first inductive element using the positive DC output voltage stored in the first capacitive element.
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Accused Products
Abstract
A power converter circuit is coupled to an AC power input, a backup power input, a first capacitive element and a second capacitive element. The power converter circuit is configured to, in a line mode of operation and during a positive portion of an AC input voltage, convert the AC input voltage into a positive DC output voltage through a first inductive element and provide a charging voltage to a backup power source through a second inductive element using a negative DC output voltage stored in the second capacitive element, and, in the line mode of operation and during a negative portion of the AC input, convert the AC input voltage into the negative DC output voltage through the second inductive element and provide the charging voltage to the backup power source through the first inductive element using the positive DC output voltage stored in the first capacitive element.
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Citations
20 Claims
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1. A power converter, comprising:
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an AC power input having a phase input connection and a neutral input connection, the AC power input being configured to receive an AC input voltage; a backup power input configured to receive a backup voltage from a backup power source; a first capacitive element configured to store a positive DC output voltage with respect to the neutral input connection; a second capacitive element configured to store a negative DC output voltage with respect to the neutral input connection; and a power converter circuit having a first inductive element and a second inductive element, the power converter circuit being coupled to the AC power input, the backup power input, the first capacitive element and the second capacitive element, the power converter circuit being configured to; in a line mode of operation and during a positive portion of the AC input voltage, convert the AC input voltage into the positive DC output voltage through the first inductive element and provide a charging voltage to the backup power source through the second inductive element using the negative DC output voltage stored in the second capacitive element; and in the line mode of operation and during a negative portion of the AC input, convert the AC input voltage into the negative DC output voltage through the second inductive element and provide the charging voltage to the backup power source through the first inductive element using the positive DC output voltage stored in the first capacitive element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power converter, comprising:
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an AC power input having a phase input connection and a neutral input connection, the AC power input being configured to receive an AC input voltage; a backup voltage source to provide a backup voltage; a first storage element configured to store a positive DC output voltage with respect to the neutral input connection; a second storage element configured to store a negative DC output voltage with respect to the neutral input connection; and means for, in a line mode of operation and during a positive portion of the AC input voltage, converting the AC input voltage into the positive DC output voltage and providing the negative DC output voltage stored in the second storage element to the backup voltage source, and, in the line mode of operation and during a negative portion of the AC input voltage, converting the AC input voltage into the negative DC output voltage and providing the positive DC output voltage stored in the first storage element to the backup voltage source. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of providing power to a load, comprising:
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receiving AC input power at a phase input connection and a neutral input connection from a primary power source; during a positive portion of the AC input power, converting the AC input power into a positive DC output voltage with respect to the neutral input connection using a first inductive element; during a negative portion of the AC input power, converting the AC input power into a negative DC output voltage with respect to the neutral input connection using a second inductive element; during the positive portion of the AC input power, providing the negative DC output voltage to a backup power source using the second inductive element; and during the negative portion of the AC input power, providing the positive DC output voltage to the backup power source using the first inductive element. - View Dependent Claims (17, 18, 19, 20)
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Specification