Patent ID: 11901805
Assignee: SMA SOLAR TECHNOLOGY AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for switching off power semiconductor switches in a bridge circuit, in which a first DC voltage connection of the bridge circuit is connected to a first intermediate point via a first power semiconductor switch, the first intermediate point is connected to an AC connection of the bridge circuit via a second power semiconductor switch, the AC connection is connected to a second intermediate point via a third power semiconductor switch and the second intermediate point is connected to a second DC voltage connection of the bridge circuit via a fourth power semiconductor switch, and in which a neutral connection of the bridge circuit is connected to the first intermediate point via a fifth power semiconductor switch and is connected to the second intermediate point via a sixth power semiconductor switch, wherein the method comprises a switch-off process, comprising:
establishing a final switch configuration in which all power semiconductor switches in the bridge circuit are in a switched-off state, wherein during a portion of the switch-off process, a switch configuration is established in which the fifth power semiconductor switch and the sixth power semiconductor switch are concurrently in a switched-on state, while the first power semiconductor switch and the fourth power semiconductor switch are in a switched-off state.