The main purpose of this research is to develop a wireless power system in order to charge the batteries of mobility scooters used by the elderly with limited mobility or disabled people. The original intention of this proposed system was not only to offer a solution for the incapacitated community who rely on electrical wheelchair and their batteries for maximum mobility but to improve the groups’ quality of life. Considering that mobility scooters' functionality depends directly on battery capacity and charging network, a powerful wireless solution could be located at home or in public places. This wireless power system can provide more freedom and enhanced assisted mobility to those needy people. As a first step, the micro-mobility devices are studied, and the mobility scooters are classified. Then, the power wireless systems are explained, and the resonant converters are shown. An LLC resonant converter is then selected and designed due to its best performance for a battery charging application. Moreover, the coil design and an Archimedean Spiral Design geometry are presented and detailed. Besides, the voltage closed-loop control is described and tested accordingly. Finally, the experimental results, obtained from the experimental setup developed in the GREPCI laboratory, are presented showing the efficiency of 80% with a 1 cm air gap for an LLC converter operating at of 100 kHz resonance frequency and delivering power for a 12 V, 12A battery used for a mobility scooter.
| Date | 20 Jul 2020 |
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| Original language | American English |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | Kamal Al-Haddad (Supervisor) |
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Porras Rodriguez, N. P. (Author),
Al-Haddad (Supervisor),
20 Jul 2020Student thesis: Master's thesis › Master in Engineering: Engineering