Patent ID: 11888396
Assignee: TOKYO INSTITUTE OF TECHNOLOGY AND
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 3:
4. A chopper circuit which converts a voltage between a first direct-current voltage on a first external connection terminal and a second direct-current voltage on a second external connection terminal, the circuit comprising:
a first switch unit including the first external connection terminal;
a second switch unit connected in series with the first switch unit to conduct electricity in a direction identical to the direction in which the first switch unit conducts electricity in an ON state, and including a second external connection terminal on a side opposite to a side on which the first switch unit is connected to the second switch unit;
at least one semiconductor power converter comprising one of a single semiconductor power converter and a plurality of semiconductor power converters cascaded to each other, provided on wiring branching from wiring connecting the first switch unit to the second switch unit; and
an inductor connected in series with the at least one semiconductor power converter, on wiring branching from wiring connecting the first switch unit to the second switch unit,
wherein the first switch unit comprises two first switch units, and the second switch unit comprises two second switch units.