electrical energy the electric motor of the turbocharger 1 here is connected to the storage device for electric energy for taking electrical energy in a motor operation of the turbocharger 1 and for feeding in electrical energy in a generator operation of the turbocharger in a particularly preferred embodiment the electric motor of the turbocharger is connected to an electrical storage device wherein this electrical storage device is additionally connectable to an electromotoric drive of a motor vehicle this may be a u201c hub motor u201d of a motor vehicle or another electric motor which is provided in the drive train of a motor vehicle for example in the region of the gear this connection of the electrical turbocharger to a hybrid vehicle is particularly energy efficient control electronics for determining the rotational speed of the turbine wheel 2 or the compressor wheel 3 actual values of pressure conditions on the turbine housing side and compressor housing side as well as further values relevant to the torque for the internal combustion engine are provided for the efficient control of the drive system or the turbocharger the most important components of the first embodiment according to fig1 a to 1 d are shown in fig1 d at the top right as a part exploded drawing here it is to be seen that it is the case.