Investigating the effect of different shapes of transmitter and receiver coil in wireless power transfer

Many battery-powered devices which need to be periodically charged such as mobile phones, tablets, battery-powered hand tools and tools. These device usually charged by indicated cord from USB port or from a dedicated wall adapter. For example, a user can charge a smart phone by simply placing it on a restaurant table outfitted with wireless charger. To make the user’s experience successful, its performance must be comparable to conventional wired chargers. Wireless power transfer had been one of the solutions to simplify the charging of these devices and brings more convenience to our daily life. This principles works as power is transfer via inductive coupling at short distance (mm range). Transmitter and receiver are inductively coupled coils as AC current in transmitter coil generates magnetic field that includes voltage in receiver coil. Receiver voltage may be used to power a mobile device or charge battery. Magnetic field is concentrated in small volume between the transmitter and receiver. Standard design for transmitter and receiver coil of wireless power transfer usually spiral or round shape. The main purpose for this project is to design different shape of transmitter and receiver coil in wireless power transfer. Differences in coil shape will then give different result in efficiency in wireless power transfer