Design and modelling of a controlled saturable inductor for an LCC-S compensated WPT system

Experimental validation of magnetic control strategy in LCC‐S compensated wireless power transfer systems

“…The AC winding (red), connected to the transmitter side of the system, is located on the central column of the core. The material of the central leg operates in the linear region of the magnetization since no static magnetic field interests this path, and an air gap ensures low AC magnetic field values, even with considerable voltage and current swings of the AC winding [27]. A further advantage of this configuration is that the anti-series connection of the DC windings almost cancels the sum of the induced electromotive force on each by improving the capability of the magnetization control, which is useful for the transmitted power regulation of the system.…”

“…The realized prototype has the specifications reported in Table 2, while Figure 6 reports the measured differential inductance profile. Further details on the inductor design procedures and design verification by means of finite element simulations are described in detail in [27].…”

“…This paper, starting from the performed design and simulation of a complete LCC-S compensated IWPT system with a variable inductor, presented in [23,24], and from the description of the design of a controlled variable inductor for an IWPT system, described in [27], presents the experimental validation of the proposed regulation strategy through a set of measurements devoted to highlight strengths, weaknesses, and future improvements of the method.…”

Variable Inductor Control Strategy in LCC-S Compensated Wireless Power Transfer Application

“…In this paper, attention is focused on the Magnetic Control (MC) of the LCC-S compensation. This control consists of exploiting the magnetic saturation of the resonant topology inductor [14]. In fact, by changing the value of the inductance, it is possible to regulate the power transferred to the load [15].…”

“…Changing the value of the DC current it is possible to change the point of working along the B-H curve of the material [16]. The principle of operation of the converter has been widely proven in [14]. Anyway, the dynamic control of the system is actually missing in the literature.…”