State Key Laboratory of Traction Power
Maglev non-contact power supply is a combination of maglev and wireless power transmission technology. The electromagnetic coupling, between the ground coil and onboard secondary coil, is used to realize power transmission. Both the linear generator coil power supply system applied in superconducting electrodynamic suspension and the inductive power transmission system applied in electromagnetic suspension have realized the non-contact power supply during the operation of the train, which also avoided the problems of contact power supply such as wear, noise and climate sensitivity. Non-contact power supply is suitable for different types of maglev system, in favor of the further commercial development of maglev technology. This paper will focus on the development of maglev non-contact power supply for domestic and overseas studies, and discuss the principle of non-contact power supply and the challenges faced.