This master’s project is a partnership between the École de Technologie Supérieure de Montréal and the company Procycle. The latter, wants to improve the controller of their Synchronous Machines with Permanent Magnets, which is in their electric bicycles. Indeed, the company would like to increase the performance of bicycles, ie increase the autonomy, improve the thermal aspect, guarantee a long-term functionality and possess intellectual property of the new controller.
This work presents, first, a performance report of the MSAP controllers used by the company. Each of these controllers is evaluated on the following criteria : waveforms, frequency spectrum, thermal aspect and calculation of efficiency. Overall, controllers have below-normal yields due to control or losses. Two of them, the latest version used by the company, shows signs of degradation in the short term. This performance report shows the need to redo a controller, to increase efficiency as well as durability. The results obtained showed that the improvements had to focus on the thermal aspect.
Subsequently, this paper focuses on the design of a Flyback converter, capable of converting high voltage from the battery, to a low voltage powering control systems. This converter has the particularity of using a planar transformer, whose dimensioning is more complex in terms of mechanical spacing and electrical stresses. Indeed, the number of turns, which happens to be on the PCB, is limited by the available space in the magnetic core. A planar transformer design method is proposed, then validated by a simulation.
After having dimensioned all the other sections of the new controller, PCBs are realized and presented with the 3D option of the Altium software, in order to visualize the final result.
| Date | 10 Jan 2018 |
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| Original language | French |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | Handy Fortin Blanchette (Supervisor) |
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Laine, A. (Author),
Fortin Blanchette (Supervisor),
10 Jan 2018Student thesis: Master's thesis › Master in Engineering: Electrical Engineering