A drive device for a vehicle equipped with an AC rotating electrical machine connected to a driving wheel, comprising: a power storage device; an inverter configured to convert DC power supplied from the power storage device to AC power and supply the AC power to the rotating electrical machine; and a control device configured to control the inverter based on a signal from a resolver that detects a rotation angle of the rotating electrical machine, the control device being configured to: perform a zero torque control to drive the inverter so that the output torque from the rotating electrical machine is zero when the power storage device is prohibited from being charged while the rotating electrical machine is being driven to rotate by the motive power from the driving wheel; and perform the zero torque control when the power storage device is prohibited from being charged while the rotating electrical machine is being driven to rotate by the motive power from the driving wheel and when it is determined that the power consumed by the inverter is greater than the regenerative power from the rotating electrical machine due to an error contained in the value detected by the resolver during the zero torque control and the regenerative power is consumed as heat by the inverter without being supplied to the battery. a power storage device; an inverter configured to convert DC power supplied from the power storage device to AC power and supply the AC power to the rotating electrical machine; and a control device configured to control the inverter based on a signal from a resolver that detects a rotation angle of the rotating electrical machine, the control device being configured to: perform a zero torque control to drive the inverter so that the output torque from the rotating electrical machine is zero when the power storage device is prohibited from being charged while the rotating electrical machine is being driven to rotate by the motive power from the driving wheel; and perform the zero torque control when the power storage device is prohibited from being charged while the rotating electrical machine is being driven to rotate by the motive power from the driving wheel and when it is determined that the power consumed by the inverter is greater than the regenerative power from the rotating electrical machine due to an error contained in the value detected by the resolver during the zero torque control and the regenerative power is consumed as heat by the inverter without being supplied to the battery. perform a zero torque control to drive the inverter so that the output torque from the rotating electrical machine is zero when the power storage device is prohibited from being charged while the rotating electrical machine is being driven to rotate by the motive power from the driving wheel; and perform the zero torque control when the power storage device is prohibited from being charged while the rotating electrical machine is being driven to rotate by the motive power from the driving wheel and when it is determined that the power consumed by the inverter is greater than the regenerative power from the rotating electrical machine due to an error contained in the value detected by the resolver during the zero torque control and the regenerative power is consumed as heat by the inverter without being supplied to the battery.