COMPARISON, EVALUATION AND APPLICATION OF BASIC COMPENSATION TOPOLOGIES IN WIRELESS POWER TRANSFER SYSTEMS

Abstract

Wireless power transfer (WPT) is an effective solution for applications where the use of physical connections is inconvenient or impractical, such as electric vehicle charging, biomedical implants, and industrial automation. However, the efficiency of systems is often limited by the low coupling coefficient and high leakage inductance between the transmitting and receiving coils. Moreover, maintaining high efficiency and stable output despite load and coil position variations is also a significant challenge. In addition to control interventions, choosing the appropriate compensation topologies is crucial. Basic compensation topologies (Series Series – SS, Series Parallel – SP, Parallel Series – PS, and Parallel Parallel – PP) are often chosen for systems that require compact size, easy deployment, and low cost. This paper analyzes and compares basic compensation topologies to evaluate the applicability of each structure, helping to improve efficiency, ensure stable output, and maintain system simplicity.