Power converter
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKoji HIGASHIYAMA, Taiki NISHIMOTO, Yasuhiro ARAI
Life of this patent
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Abstract
A power converter includes a plurality of switches, a plurality of resonant capacitors, at least one resonant inductor, a controller, a voltage divider circuit, and plurality of common mode filters. The voltage divider circuit includes a first capacitor and a second capacitor which are connected in series. The plurality of common mode filters are provided one to one for the plurality of switching circuits. The voltage divider circuit has an intermediate potential node between the first capacitor and the second capacitor. Each of the plurality of common mode filters includes a third capacitor connected between the connection node of a corresponding one of the plurality of switching circuits and the intermediate potential node.
Claims9
A power converter comprising:
- a first DC terminal and a second DC terminal;
- a power converter circuit including a plurality of first switching elements and a plurality of second switching elements, the power converter circuit being implemented as a parallel connection of a plurality of switching circuits in each of which one of the plurality of first switching elements and a corresponding one of the plurality of second switching elements are connected one to one in series, the plurality of first switching elements being connected to the first DC terminal, the plurality of second switching elements being connected to the second DC terminal;
- a plurality of AC terminals provided one to one for the plurality of switching circuits, respectively, each of the plurality of AC terminals being connected to a connection node between the first switching element and the second switching element of a corresponding one of the plurality of switching circuits;
- a plurality of switches provided one to one for the plurality of switching circuits, each of the plurality of switches having a first end and a second end, each of the plurality of switches having the first end thereof connected to the connection node between the first switching element and the second switching element of a corresponding one of the plurality of switching circuits;
- a plurality of resonant capacitors provided one to one for the plurality of switches, respectively, each of the plurality of resonant capacitors being connected between the first end of a corresponding one of the plurality of switches and the second DC terminal;
- at least one resonant inductor having a third end and a fourth end, the third end of the at least one resonant inductor being connected to the second end of a corresponding one of the plurality of switches;
- a regenerative capacitor having a fifth end and a sixth end, the fifth end of the regenerative capacitor being connected to the second DC terminal, the sixth end of the regenerative capacitor being connected to the fourth end of the at least one resonant inductor;
- a controller configured to control the plurality of first switching elements, the plurality of second switching elements, and the plurality of switches;
- a voltage divider circuit including a first capacitor and a second capacitor which are connected in series, the first capacitor being connected to the first DC terminal, the second capacitor being connected to the second DC terminal, the voltage divider circuit having an intermediate potential node between the first capacitor and the second capacitor;
- and
- a plurality of common mode filters provided one to one for the plurality of switching circuits, each of the plurality of common mode filters including a third capacitor connected between the connection node of a corresponding one of the plurality of switching circuits and the intermediate potential node.
Dependencies are inferred from the claim text.