This paper proposes and demonstrates a wireless power transfer system design for electric vehicle dynamic charging applications. The dynamic wireless charging (DWC) lane is designed for modularly. Each module has three shorttrack transmitter coils that are placed closely together and connected to a single inverter to reduce the number of inverters. The magnetic coupler design is analyzed and optimized by finite element analysis (FEA) to reduce the output power variation during dynamic charging. The LCC compensation circuit is designed according to the optimal load value to obtain maximum efficiency. The SIC devices are used to improve the efficiency of the high-frequency resonant inverter. A 1.5 kW dynamic charging system prototype is constructed. Experimental results show that the output power variation of 9.5% and the average efficiency of 89.5% are obtained in the moving condition.

The stator current control loop plays an important role in ensuring the quality of electric drives interm of producing fast and adequate required torque. When the current controller provides ideal responses, speed control design subsequently is in charge of improving the system performances. Classical PID control is commonly used in current loop design, this paper presents the comparative analysis of current stator controller using proportional integral control and predictive current control (PCC) in field-oriented control-based induction motor drives, with rigidly coupled loads. The experimental results show system responses with PID and PCC. Informative experiment-based analysis provides primary guidance in selection between the two controls.

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A numerical study on the complex propagation constants of the surface plasmon polariton (SPP) rectangular hollow waveguide by the method of lines (MoL) is performed. New cut-off conditions are proposed for the SPP waveguide. A SPP rectangular hollow waveguide constructed of gold is first considered. The dependences of complex propagation constants on the sizes of the waveguide and on the wavelength are investigated. Fundamental and unusual characteristics of the SPP waveguide are revealed. The validity and limitations of effective index method (EIM) are examined by comparing the numerical results obtained by the MoL with the approximate results obtained by EIM. The differences in the propagation characteristics among the various metals are then shown.