Optimization of Near-Field Wireless Power Transfer Using Evolutionary Strategies

The parameter space for power transfer by nearfield, magnetically coupled, half wavelength coil resonators was explored by evolving the coil shape using an evolutionary strategy and method of moments antenna analysis. The starting coil shapes were solenoid, which were evolved to enhance the power transfer between multiple coils. Through the use of an appropriate fitness function and tuned search space boundaries, the shape of a set of solenoid coils was evolved to improve the power transfer over a wider operating range when compared to the non-evolved case.