Converter circuit for an electrical machine

An inverter circuit which includes a plurality of pairs of switches is electrically connected between a high voltage bus and a multi-phase electric machine. Each pair of switches includes a first switch which is electrically connected at a node to a second switch in series. Each node is electrically connected to one phase of the polyphase electrical machine, wherein the first switch between a positive side of the high voltage bus and the node is electrically connected and the second switch between a negative side of the high voltage bus and the node is electrically connected. The first switch is configured as a switched off normally switch. The second switch is configured as a switched normally switch.