Inverter arrangement for supplying an n-phase supply voltage to an n-phase electric machine, where n ≥ 1, comprising: a DC voltage intermediate circuit, to which a DC voltage is supplied from a high-voltage source; an inverter comprising a multiplicity of switching devices (3a, 3b, 3c, 3d, 3e, 3f), which is connected to the DC voltage intermediate circuit and is designed to provide an n-phase supply voltage at phase connections (4a, 4b, 4c); an operating state circuit for driving the inverter, which supplies the n-phase supply voltage to the n-phase electric machine via the phase connections (4a, 4b, 4c), where n ≥ 1, comprising: a drive device, which is coupled to an evaluation device and which is designed to switch the inverter into a freewheeling state or into an active short circuit in dependence on a determined speed, wherein the evaluation device is connected to the phase connections (4a, 4b, 4c) of the inverter and is designed to detect output voltages of the inverter at the phase connections (4a, 4b, 4c) and to determine the speed of the electric machine on the basis of the detected output voltages, wherein the operating state circuit is designed to drive the multiplicity of switching devices (3a, 3b, 3c, 3d, 3e, 3f) of the inverter for setting a freewheeling state or an active short circuit; and an energy supply device, which is coupled to the DC voltage intermediate circuit and which is designed to supply electrical energy from the DC voltage intermediate circuit to the evaluation device and the drive device, wherein the drive device is designed to switch the inverter into a freewheeling state when the determined speed is less than a predetermined speed threshold value and to switch the inverter into an active short circuit when the determined speed is greater than or equal to the predetermined speed threshold value, wherein the driving of the switching devices (3a, 3b, 3c, 3d, 3e, 3f) is only implemented when a fault state of the electric machine is detected. a DC voltage intermediate circuit, to which a DC voltage is supplied from a high-voltage source; an inverter comprising a multiplicity of switching devices (3a, 3b, 3c, 3d, 3e, 3f), which is connected to the DC voltage intermediate circuit and is designed to provide an n-phase supply voltage at phase connections (4a, 4b, 4c); an operating state circuit for driving the inverter, which supplies the n-phase supply voltage to the n-phase electric machine via the phase connections (4a, 4b, 4c), where n ≥ 1, comprising: a drive device, which is coupled to an evaluation device and which is designed to switch the inverter into a freewheeling state or into an active short circuit in dependence on a determined speed, wherein the evaluation device is connected to the phase connections (4a, 4b, 4c) of the inverter and is designed to detect output voltages of the inverter at the phase connections (4a, 4b, 4c) and to determine the speed of the electric machine on the basis of the detected output voltages, wherein the operating state circuit is designed to drive the multiplicity of switching devices (3a, 3b, 3c, 3d, 3e, 3f) of the inverter for setting a freewheeling state or an active short circuit; and an energy supply device, which is coupled to the DC voltage intermediate circuit and which is designed to supply electrical energy from the DC voltage intermediate circuit to the evaluation device and the drive device, wherein the drive device is designed to switch the inverter into a freewheeling state when the determined speed is less than a predetermined speed threshold value and to switch the inverter into an active short circuit when the determined speed is greater than or equal to the predetermined speed threshold value, a drive device, which is coupled to an evaluation device and which is designed to switch the inverter into a freewheeling state or into an active short circuit in dependence on a determined speed, wherein the evaluation device is connected to the phase connections (4a, 4b, 4c) of the inverter and is designed to detect output voltages of the inverter at the phase connections (4a, 4b, 4c) and to determine the speed of the electric machine on the basis of the detected output voltages, wherein the operating state circuit is designed to drive the multiplicity of switching devices (3a, 3b, 3c, 3d, 3e, 3f) of the inverter for setting a freewheeling state or an active short circuit; and an energy supply device, which is coupled to the DC voltage intermediate circuit and which is designed to supply electrical energy from the DC voltage intermediate circuit to the evaluation device and the drive device, wherein the drive device is designed to switch the inverter into a freewheeling state when the determined speed is less than a predetermined speed threshold value and to switch the inverter into an active short circuit when the determined speed is greater than or equal to the predetermined speed threshold value, wherein the driving of the switching devices (3a, 3b, 3c, 3d, 3e, 3f) is only implemented when a fault state of the electric machine is detected.