According to the drawbacks of the traditional rail-type inductively coupled power transfer (ICPT) system, which mainly improves its output power and efficiency by increasing the input voltage or the capacity of the magnetic core, a new distributed magnetic structure for rail-type ICPT system was presented: with the primary energy launch institutions parallel connection and the secondary energy pickup institutions series connection, the output power and efficiency of rail-type ICPT can be effectively promoted. The equivalent circuit model of the new magnetic circuit was established, the calculation method for output power and efficiency of the system was given, and the maximum power transfer condition was also analyzed. The theory analysis results showed that with the new distributed magnetic circuit, the output power is three times larger than the traditional type, and the efficiency can also be improved. Finally, the experiment results verified the availability of the magnetic circuit and the theory analysis method.
