InnenAußenrotorsysteme

InnenAußenrotorsysteme are a type of electric motor construction. In this design, the stator, which houses the windings, is located on the inside, while the rotor, which carries the permanent magnets or induced currents, is on the outside. This arrangement is also known as an outside-rotor motor or a "pancake" motor due to its typically flat profile.

The key characteristic is the inversion of the conventional motor layout where the rotor is typically inside the stator. This construction offers several advantages. The larger diameter of the outer rotor allows for a greater torque output for a given motor volume, as the magnetic forces are distributed over a wider radius. Furthermore, the outer rotor can act as a natural heat sink, facilitating more efficient heat dissipation, which can lead to higher continuous power ratings and reduced risk of overheating.

InnenAußenrotorsysteme are often employed in applications where space is constrained in one dimension but available in another, such as in electric scooters, certain types of drones, cooling fans, and some electric vehicle wheel hub motors. The design can simplify assembly and reduce the overall length of the motor, making it suitable for compact applications. The mechanical design also often leads to a more robust construction. However, the larger diameter can sometimes be a limitation in applications requiring a very narrow profile.