US 2026/0246391 A1 · BIDIRECTIONAL DC-to-DC POWER CONVERTER CIRCUITS AND SYSTEMS

Abstract

A power converter circuit may include a primary and a secondary stage. The primary stage may include a first primary winding connected in parallel with a first conversion stage, and a second primary winding similarly connected with a second conversion stage. Each of the first and second conversion stages may include a first primary switch and first auxiliary switching circuit, and a second primary switch and second auxiliary switching circuit. For each conversion stage, the first auxiliary switching circuit and the second auxiliary switching circuit may include a storage circuit having a snubber capacitor and diode, and a recirculation circuit having a recirculation inductor, diode, and switch. The storage circuit of the first auxiliary switching circuit may be connected in parallel with the first primary switch, and the storage circuit of the second auxiliary switching circuit may be similarly connected with the second primary switch.

Claims19

Dependent claims

A power converter circuit comprising:

a primary stage and a secondary stage, the primary stage comprising a first primary winding connected in parallel with a first conversion stage, and a second primary winding connected in parallel with a second conversion stage,
wherein the first conversion stage and the second conversion stages each comprises a first primary switch and a first auxiliary switching circuit, and a second primary switch and a second auxiliary switching circuit, and
wherein, for each of the first conversion stage and the second conversion stage, the first auxiliary switching circuit and the second auxiliary switching circuit comprise:
a storage circuit having a snubber capacitor and a snubber diode;
and
a recirculation circuit having a recirculation inductor, a recirculation diode, and a recirculation switch,
wherein the storage circuit of the first auxiliary switching circuit is connected in parallel with the first primary switch, and the storage circuit of the second auxiliary switching circuit is connected in parallel with the second primary switch.

4 more elements

A power converter system comprising:

a power converter circuit comprising:
a primary stage and a secondary stage, the primary stage comprising a first primary winding connected in parallel with a first conversion stage and a second primary winding connected in parallel with a second conversion stage,
wherein the first conversion stage and the second conversion stage each comprises a first primary switch and a first auxiliary switching circuit, and a second primary switch, and a second auxiliary switching circuit,
wherein, for each of the first conversion stage and the second conversion stage, the first auxiliary switching circuit and the second auxiliary switching circuit comprise:
a storage circuit having a snubber capacitor and a snubber diode;
and
a recirculation circuit having a recirculation inductor, a recirculation diode, and a recirculation switch,
wherein the storage circuit of the first auxiliary switching circuit is connected in parallel with the first primary switch, and the storage circuit of the second auxiliary switching circuit is connect in parallel with the second primary switch;
and
a control circuit configured to controleach recirculation switch to enable the respective recirculation circuit in a forward power conversion mode of operationand to disable the recirculation circuit in a backward power conversion mode of operation.

7 more elements

Dependencies are inferred from the claim text.

BIDIRECTIONAL DC-to-DC POWER CONVERTER CIRCUITS AND SYSTEMS

Life of this patent

BIDIRECTIONAL DC-to-DC POWER CONVERTER CIRCUITS AND SYSTEMS

Life of this patent

Abstract

Claims19