Power Stabilizer for Dynamic Wireless Charging Applications
A Drive Towards a Sustainable Future
N. Rauf (TU Delft - Electrical Engineering, Mathematics and Computer Science)
W. Shi – Mentor (TU Delft - Electrical Engineering, Mathematics and Computer Science)
P. Bauer – Mentor (TU Delft - Electrical Engineering, Mathematics and Computer Science)
F.A. Muñoz Muñoz – Graduation committee member (TU Delft - Electrical Engineering, Mathematics and Computer Science)
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Abstract
With the rise of greenhouse gasses, increasing environmental concerns and pollution, solutions to a cleaner and more sustainable world are demanded. This thesis contributes to a step towards a cleaner and more sustainable planet Earth. Road transportation has a relatively high contribution to greenhouse gas emissions. A promising approach to lower these emissions is to use electric vehicles(EVs) instead of traditional combustion engine vehicles for road transport.
However, EVs come with their challenges. In general, they have long charging time, introduce range anxiety and have a higher initial cost compared to combustion engine vehicles. By introducing dynamic wireless charging(DWC), these challenges will be eliminated/mitigated. In a scenario in which an EV is charged by using DWC, the EV can continue its journey on the road while its charging. However, due to the dynamic behavior of the mutual inductance, between the transmitting and receiving coil, the output power will not be constant, while for charging a battery a stable output power is required. Therefore, it is necessary to stabilize the power.
There are several methods to stabilize the power. This thesis will provide a comparative analysis of three methods to stabilize power which are, stabilizing the power by using a buck converter, an inverter or an active rectifier. Three different models are constructed in MATLAB Simulink in which each model contains the dynamic wireless power transfer (DWPT) circuit and one of the mentioned circuits to stabilize the output power. The circuits are compared based on five characteristics, namely, voltage ripple, space efficiency, voltage regulation, modulation complexity and start-up time. According to the results the active rectifier is the most suitable circuit to stabilize the output power of a DWC system.