Multi-Level Parallel Power Converters
First Claim
1. A multi-level power converter comprising:
- an input for receiving an input voltage;
a converter output for providing a variable output voltage;
a plurality of switching circuits, each switching circuit connected to the input in parallel with each other switching circuit, each switching circuit including an output, each switching circuit selectively operable to couple its output to the input voltage or a reference voltage; and
a parallel multi-winding autotransformer (PMA), the PMA including a plurality of windings and a magnetic core having a plurality of magnetically connected columns, each winding positioned around a different one of the columns, each winding having a beginning and an end, the output of each switching circuit coupled to the beginning of a different winding, the end of each winding connected to the converter output in parallel with each other winding.
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Accused Products
Abstract
Multi-level power converters are disclosed. In one embodiment, a multi-level power converter includes an input for receiving an input voltage and a converter output for providing a variable output voltage. The multi-level power converter includes a plurality of switching circuits. Each switching circuit is connected to the input in parallel with each other switching circuit. Each switching circuit includes an output. Each switching circuit is selectively operable to couple its output to the input voltage or a reference voltage. The multi-level power converter includes a parallel multi-winding autotransformer (PMA). The PMA includes a plurality of windings and a magnetic core having a plurality of magnetically connected columns. Each winding is positioned around a different one of the columns and has a beginning and an end. The output of each switching circuit is coupled to the beginning of a different winding. The end of each winding is connected to the converter output in parallel with each other winding.
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Citations
20 Claims
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1. A multi-level power converter comprising:
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an input for receiving an input voltage; a converter output for providing a variable output voltage; a plurality of switching circuits, each switching circuit connected to the input in parallel with each other switching circuit, each switching circuit including an output, each switching circuit selectively operable to couple its output to the input voltage or a reference voltage; and a parallel multi-winding autotransformer (PMA), the PMA including a plurality of windings and a magnetic core having a plurality of magnetically connected columns, each winding positioned around a different one of the columns, each winding having a beginning and an end, the output of each switching circuit coupled to the beginning of a different winding, the end of each winding connected to the converter output in parallel with each other winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A multi-level power converter comprising:
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an input for receiving an input voltage, the input including a first input node and a second input node; an output for providing a variable output voltage; a parallel magnetic component including a magnetic core, a first winding, a second winding and a third winding, the magnetic core including a first column, a second column, and a third column, the first, second and third columns magnetically connected to each other, the first winding positioned around the first column, the second winding positioned around the second column and the third winding positioned around the third column, each of the first, second, and third windings including an input end and an output end, the first second and third windings wound in a same direction with respect to their input ends, and the output end of each of the first, second, and third windings are galvanically connected together; a first switching circuit coupled to the first input node, the second input node and the input end of the first winding; a second switching circuit coupled to the first input node, the second input node and the input end of the second winding; and a third switching circuit coupled to the first input node, the second input node and the input end of the third winding. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification