Power converter

A power converter, comprising:

• a transformer that includes a direct-current-side winding and an alternating-current-side winding;
• a direct-current-side capacitor;
• an alternating-current-side capacitor;
• a direct-current-side circuit that includes a direct-current-side inductor, a rectification switching element, first and second direct-current connection terminals forming a pair, and a direct-current-side buffer circuit;
• and
• an alternating-current-side circuit that includes first and second alternating-current connection terminals forming a pair, an alternating-current-side inductor, a first upper arm switching element, a second upper arm switching element, a first lower arm switching element, a second lower arm switching element, and alternating-current-side buffer circuit, wherein
• a series connection of the first upper arm switching element and the first lower arm switching element and a series connection of the second upper arm switching element and the second lower arm switching element form a bridge circuit,
• a node between the first upper arm switching element and the first lower arm switching element and a node between the second upper arm switching element and the second lower arm switching element are connected to each other via the first and second alternating-current connection terminals and the alternating-current-side inductor,
• the direct-current-side buffer circuit includes a direct-current-side buffer switching element and a direct-current-side buffer capacitor,
• the alternating-current-side buffer circuit includes an alternating-current-side buffer switching element and an alternating-current-side buffer capacitor and is connected in parallel with the bridge circuit,
• the direct-current-side circuit is connected to the direct-current-side winding of the transformer via the direct-current-side capacitor, and
• the alternating-current-side circuit is connected to the alternating-current-side winding of the transformer via the alternating-current-side capacitor.