Manual Keppe Motor 3.0 Download [BETTER]
Gabrielle Brownlee
So far several project topics were offered and implemented, namely the construction of a
- simple ultraviolet spectrometer
- setup for heat conductivity measurements
- Stirling engine
- special electric motor related to the so-called Keppe Motor
Often several student groups did work simultaneously and independently on the same project topic. Each group comprised around five students. The practicum started with an introductory event around mid September and ended around mid December with a presentation event where each group of students presented their project and results.
The so-called Keppe Motor as project topic was proposed by Frank Lichtenberg and he supervised the students as tutor / advisor and prepared a draft for this webpage. The Keppe Motor is a special type of a brushless electric motor which is integrated in some commercially available fans. The Keppe Motor website external page _made provides various kinds of information and products including a Keppe Motor kit.
It is also allowed to implement mechanical constructions and / or control variants which deviate significantly from the original Keppe Motor concept. The following two pictures show an example, namely a model of a synchronous motor which is not controlled by the angular position of the rotational axis but by a sequential activation of two opposite coils in an angular array of coils.
A synchronous motor model and associated control electronics designed and manufactured by Thomas Schweizer. This model with 4 coils requires a manual start and a flywheel to ensure a continuous motion. A larger number of coils would allow an automatic start and a continuous motion without using a flywheel. The implementation of a corresponding model represents a potential student project.
Comments on the presentation of Group 2 from fall semester 2022: At the second last working day the electric motor of Group 2 did not yet work but there was still hope to put it into operation on the last available working day. Therefore it was decided to perform no practice talk for the presentation event which took place on 20 December 2022. Instead the last possible working day was used for further attempts to put the motor into operation. However, it did not work and the main reason for that was a too large friction of the relatively complex cogwheel system which was part of their design. This outcome should not be considered as a failure but simply as a result without any judgement. If a planned project objective cannot be achieved, then this is important learning experience, especially in the field of research and development and when only a limited period of time is available.