Importance

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Abstract

An inverter for driving an electrical machine has a power converter circuit, a safety control device and a power supply circuit for supplying the power converter circuit and the safety control device. The safety control device is configured to switch the power converter circuit to a safe state when a shutdown situation is present. The power supply circuit has a high-voltage branch, a first low-voltage branch and a second low-voltage branch, the high-voltage branch being electrically connected to the first low-voltage branch via an operating DC-DC converter, wherein neither the high-voltage branch nor the first low-voltage branch are electrically connected to the second low-voltage branch, wherein the power converter circuit and the safety control device are supplied with energy from the first low-voltage branch and the second low-voltage branch.

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First Claim