Electric drive system comprising an electric motor and a power supply, wherein • the power supply is arranged in a manner bearing radially against the outside of the electric motor and around the electric motor in the circumferential direction, • the power supply is accommodated in a hollow-cylindrical housing, the electric motor being arranged in the inner hollow region of the said hollow-cylindrical housing, • a) the hollow-cylindrical housing is subdivided into at least two segments in the circumferential direction or • b) the hollow-cylindrical housing is subdivided into a plurality of ring elements in the axial direction, wherein each ring element is subdivided into at least two segments in the circumferential direction, • a dedicated control circuit board is associated respectively with each segment, which is extended in the circumferential direction according to feature a), of the hollow-cylindrical housing of the power supply or respectively with all of the segments, which are arranged in a common circumferential position according to feature b), of ring elements which are situated axially one behind the other, which control circuit board is arranged with an at least partial overlap of the axial end faces of the power supply and the electric motor and, for distributing the power of the power supply to a stator energization system of the electric motor, is connected to a portion of the said stator energization system and a power electronics system for controlling the electric motor is respectively formed by all of the control circuit boards, which are associated with the segments, the respective voltage of the segment in question according to feature a) or the combined sum voltages of the segments which are situated axially one behind the other in a common circumferential position according to feature b) being electrically connected to the said power electronics system, so that the electric motor can be operated with the power and the power electronics system only of one segment according to feature a) or of the segments of a single circumferential position according to feature b). • the power supply is arranged in a manner bearing radially against the outside of the electric motor and around the electric motor in the circumferential direction, • the power supply is accommodated in a hollow-cylindrical housing, the electric motor being arranged in the inner hollow region of the said hollow-cylindrical housing, • a) the hollow-cylindrical housing is subdivided into at least two segments in the circumferential direction or • b) the hollow-cylindrical housing is subdivided into a plurality of ring elements in the axial direction, wherein each ring element is subdivided into at least two segments in the circumferential direction, • a dedicated control circuit board is associated respectively with each segment, which is extended in the circumferential direction according to feature a), of the hollow-cylindrical housing of the power supply or respectively with all of the segments, which are arranged in a common circumferential position according to feature b), of ring elements which are situated axially one behind the other, which control circuit board is arranged with an at least partial overlap of the axial end faces of the power supply and the electric motor and, for distributing the power of the power supply to a stator energization system of the electric motor, is connected to a portion of the said stator energization system and a power electronics system for controlling the electric motor is respectively formed by all of the control circuit boards, which are associated with the segments, the respective voltage of the segment in question according to feature a) or the combined sum voltages of the segments which are situated axially one behind the other in a common circumferential position according to feature b) being electrically connected to the said power electronics system, so that the electric motor can be operated with the power and the power electronics system only of one segment according to feature a) or of the segments of a single circumferential position according to feature b).