Design of Wireless Power Charging Coil for LED Lighting

Yeow, Ming Xuan (2023) Design of Wireless Power Charging Coil for LED Lighting. Final Year Project (Bachelor), Tunku Abdul Rahman University of Management and Technology.

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Abstract

LED lighting is commonly used in illuminations due to its energy-saving and high luminous efficacy, but it’s not suitable for moist or underwater environments due to safety concerns. To resolve the concern, wireless power transfer solution is proposed. In this research, integration wireless power transfer technology into the power supply of LED lighting is focus, enabling their installation in diverse environments while minimizing the risk of electrical shock and other safety hazards related to direct electrical contact. However, the small profile of LED lighting means that the current wireless charging technology, Qi wireless charging standard is not directly compatible. Hence, wireless power charging coil that suitable to be used in LED lighting will be designed in simulation software to study on the performance of the design and how different parameter contribute to the performances. Ansys Maxwell, a finite element modeling (FEM) software is selected as the simulation software to conduct the design of model. The proposed design aims to achieve a performance of obtaining quality factor of 100 and above or power transfer efficiency of more than 90%. Parametric study will be carried out with the defined boundary conditions based on the design constraints. It is to determine the optimum values for the design parameters to better optimize the performance of the coil model. The final proposed model created in the simulation has successfully achieved a quality factor of 178.85 for transmitter coil and a quality factor of 155.22, with a power transfer efficiency of 98.66%. The proposed model achieved the required performances with the constraints of the small LED’s profile. The proposed model can be further optimized by implementing impedance matching and LC-filter on the circuitry design. Physical prototype can be constructed to actual validate the research result.