Comparison of the Geometry of the Optimized Coil Pair of Wireless Power Transmission Systems with SS and SP Compensation

Wireless power transmission (WPT) is a common method of powering implantable medical devices. Coil pair misalignments compensation is an important step in design of WPT systems. Optimization of the coils is one method of compensating for misalignments. There are 4 main compensation schemes for WPT systems: SS, SP, PS and PP. SS and SP compensation are the most commonly used. There is a relationship between optimal geometry and compensation scheme. The aim of this work is to study the influence of the compensation scheme on the geometry of the coils. The paper presents a comparison of the optimal geometry of the coils obtained using the developed algorithms for geometric optimization of systems with SS and SP compensation. Optimization was carried out with an axial distance between the turns of 15 mm, lateral displacement from 0 to 30 mm for two compensation schemes: SS and SP.