Lagerkrafter och friktionsförluster i svänghjulssystem

• Main Authors: Carlgren, Jonathan, Oskarsson, Per William, Söderman, Emil, Bürger, Johan
• Format: Others
• Language: Swedish
• Published: 2021
• Subjects: Svänghjul; energilagring; energi; SKF; rullager; reaktionskraft; friktion; energiförlust; gyroskopisk kraft; mekanisk obalans; Energy Engineering; Energiteknik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447779

Reliable energy storage systems are necessary in modern sustainable societies. Storing energy in a spinning flywheel is an old technology which is further investigated in this project. By examining the reactionary forces and friction loss for bearings in a flywheel system, using both MATLAB and Google Spreadsheets, conclusions about the systems design can be drawn. Out of the reactionary forces acting on the rotor, the gravitational force and the mechanical unbalance force proved to be the significant ones, while the gyroscopic reactionary force was relatively small. According to these calculations, to minimize the friction losses, a disc shaped flywheel should be constructed. In general smaller bearing of a chosen bearing type will cause less friction than a bigger bearing of the same type. The bearings also have to be strong and durable enough to meet the requirements of the application.