Development of a Vehicle-Side Circuit Design Methodology to Enhance Wireless Power Transfer Performance in Electric Vehiclese

von Siyuan Lu

184 Seiten, Taschenbuch

Kurzbeschreibung des Verlags

For static magnetic-resonance wireless power transfer (WPT) systems for electric vehicles (EVs), achieving stable and efficient power transfer over a wide operating range remains a major challenge. This thesis develops a vehicle-side circuit design methodology focusing on the T-compensation network (TCN) and two rectifier topologies: the full-bridge active rectifier (FBAR) and diode full-bridge rectifier (FB). Conventional TCN design methods based only on reactive power compensation cannot fully utilize the flexibility of high-order compensation networks. To address this limitation, this thesis proposes a TCN design method based on impedance mapping. Impedance trajectories (ITs) and impedance zones (IZs) are introduced to represent design requirements on the coil and rectifier sides. By exploiting conformal mapping properties, the TCN can be designed globally and visually, simplifying the design process, especially under multiple constraints. WPT system design is commonly based on the fundamental harmonic approximation (FHA), which decouples the resonant circuit and rectifier analysis. Although FHA provides a useful starting point, its accuracy is insufficient for final optimization. Therefore, this thesis further considers static and dynamic interactions between the resonant circuit and the rectifier for both FBAR and diode FB systems. Experimental results show that the proposed method effectively utilizes the additional design degrees of freedom. Compared with conventional methods, it improves transfer performance across nearly all operating points and increases efficiency by up to 3.0%. Simulations and experiments also validate the proposed interaction models and support stable and efficient control design for FBAR-based systems.

• Reihe: Berichte aus dem Institut für Elektrische Energiewandlung
• Themen: Technologie, Ingenieurswissenschaft, Landwirtschaft, Industrieprozesse Energietechnik, Elektrotechnik und Energiemaschinenbau Elektrotechnik
• ISBN: 9783819107696
• Sprache: Englisch
• Erscheinungsdatum: 20.07.2026
• Größe: 21 x 14.8 cm
• Verlag: Shaker