Staggered parallel three-level DC/DC converter and AC/DC converter
First Claim
1. A staggered parallel three-level DC/DC converter, comprising:
- at least one input power supply;
N-phase three-level DC/DC circuits, N resonant inductors, N resonant capacitors, N transformers, and N rectifier circuits;
a first inductor; and
an output circuit;
wherein one end of an i th resonant inductor is connected to an i th-phase three-level DC/DC circuit, and the other end of the i th resonant inductor is connected to an excitation inductor of an i th transformer;
wherein one end of an i th resonant capacitor is connected to the i th-phase three-level DC/DC circuit, and the other end of the i th resonant capacitor is connected to the excitation inductor of the i th transformer;
wherein one end of the first inductor is connected to one input end of the output circuit, the other end of the first inductor is connected to one output end of each of the N transformers via one of the corresponding N rectifier circuits that are respectively connected to the N transformers, and another output end of each of the N transformers is connected to another input end of the output circuit;
wherein N is an integer and is greater than or equal to 2;
wherein i is an integer and 1≦
i≦
N; and
wherein each i th-phase three-level DC/DC circuit comprises;
a first voltage dividing unit, a second voltage dividing unit, a first diode, a second diode, a first inverter, a second inverter, a third inverter, and a fourth inverter, wherein;
the first voltage dividing unit and the second voltage dividing unit are connected in series;
the first diode and the second diode are connected in series;
the first inverter, the second inverter, the third inverter, and the fourth inverter are in series connected in sequence;
the positive end of the first inverter is connected to one end of the first voltage dividing unit, and the negative end of the first inverter is connected to the cathode of the first diode;
the positive end of the second inverter is connected to the cathode of the first diode, and the negative end of the second inverter is connected to one end of the i th resonant inductor;
the positive end of the third inverter is connected to one end of the i th resonant inductor, and the negative end of the third inverter is connected to the anode of the second diode; and
the positive end of the fourth inverter is connected to the anode of the second diode, and the negative end of the fourth inverter is connected to one end of the second voltage dividing unit.
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Accused Products
Abstract
A staggered parallel three-level DC/DC converter and an AC/DC converter includes: at least one input power supply, N-phase three-level DC/DC circuits, N resonant inductors, N resonant capacitors, N transformers, N rectifier circuits, a first inductor, and an output circuit; one end of an i th resonant inductor is connected to an i th-phase three-level DC/DC circuit, the other end of the i th resonant inductor is connected to an excitation inductor of an i th transformer; one end of an i th resonant capacitor is connected to the i th-phase three-level DC/DC circuit, and the other end of the i th resonant capacitor is connected to the excitation inductor of the i th transformer; or one end of the first inductor is connected to the input power supply, and the other end of the first inductor is connected to the N-phase three-level DC/DC circuit; where N is an integer and is greater than or equal to 2, and i is an integer and 1≦i≦N.
9 Citations
14 Claims
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1. A staggered parallel three-level DC/DC converter, comprising:
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at least one input power supply; N-phase three-level DC/DC circuits, N resonant inductors, N resonant capacitors, N transformers, and N rectifier circuits; a first inductor; and an output circuit; wherein one end of an i th resonant inductor is connected to an i th-phase three-level DC/DC circuit, and the other end of the i th resonant inductor is connected to an excitation inductor of an i th transformer; wherein one end of an i th resonant capacitor is connected to the i th-phase three-level DC/DC circuit, and the other end of the i th resonant capacitor is connected to the excitation inductor of the i th transformer; wherein one end of the first inductor is connected to one input end of the output circuit, the other end of the first inductor is connected to one output end of each of the N transformers via one of the corresponding N rectifier circuits that are respectively connected to the N transformers, and another output end of each of the N transformers is connected to another input end of the output circuit; wherein N is an integer and is greater than or equal to 2; wherein i is an integer and 1≦
i≦
N; andwherein each i th-phase three-level DC/DC circuit comprises;
a first voltage dividing unit, a second voltage dividing unit, a first diode, a second diode, a first inverter, a second inverter, a third inverter, and a fourth inverter, wherein;the first voltage dividing unit and the second voltage dividing unit are connected in series; the first diode and the second diode are connected in series; the first inverter, the second inverter, the third inverter, and the fourth inverter are in series connected in sequence; the positive end of the first inverter is connected to one end of the first voltage dividing unit, and the negative end of the first inverter is connected to the cathode of the first diode; the positive end of the second inverter is connected to the cathode of the first diode, and the negative end of the second inverter is connected to one end of the i th resonant inductor; the positive end of the third inverter is connected to one end of the i th resonant inductor, and the negative end of the third inverter is connected to the anode of the second diode; and the positive end of the fourth inverter is connected to the anode of the second diode, and the negative end of the fourth inverter is connected to one end of the second voltage dividing unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An AC/DC (alternating current/direct current) converter, comprising:
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a power factor rectifier circuit; and a staggered parallel three-level DC/DC (direct current/direct current) converter which comprises; at least one input power supply, N-phase three-level DC/DC circuits, N resonant inductors, N resonant capacitors, N transformers, N rectifier circuits, a first inductor, and an output circuit; wherein one end of an i th resonant inductor is connected to an i th-phase three-level DC/DC circuit, and the other end of the i th resonant inductor is connected to an excitation inductor of an i th transformer; wherein one end of an i th resonant capacitor is connected to the i th-phase three-level DC/DC circuit, and the other end of the i th resonant capacitor is connected to the excitation inductor of the i th transformer; wherein one end of the first inductor is connected to one input end of the output circuit, the other end of the first inductor is connected to one output end of each of the N transformers via one of the corresponding N rectifier circuits that are respectively connected to the N transformers, and another output end of each of the N transformers is connected to another input end of the output circuit; wherein N is an integer and is greater than or equal to 2; wherein i is an integer and 1≦
i ≦
N; andwherein each i th-phase three-level DC/DC circuit comprises;
a first voltage dividing unit, a second voltage dividing unit, a first diode, a second diode, a first inverter, a second inverter, a third inverter, and a fourth inverter, wherein;the first voltage dividing unit and the second voltage dividing unit are connected in series; the first diode and the second diode are connected in series; the first inverter, the second inverter, the third inverter, and the fourth inverter are in series connected in sequence; the positive end of the first inverter is connected to one end of the first voltage dividing unit, and the negative end of the first inverter is connected to the cathode of the first diode; the positive end of the second inverter is connected to the cathode of the first diode, and the negative end of the second inverter is connected to one end of the i th resonant inductor; the positive end of the third inverter is connected to one end of the i th resonant inductor, and the negative end of the third inverter is connected to the anode of the second diode; and the positive end of the fourth inverter is connected to the anode of the second diode, and the negative end of the fourth inverter is connected to one end of the second voltage dividing unit. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification