Wireless power transfer has become a highly valued feature for users of portable devices. In this paper, it is shown the analysis and implementation of two stable operations applied to low power inductive power transfer (IPT) systems. These proposed operations do not require feedback from the receiver side because considers some parameters of the transmitter resonant tank. The objective to overcome is to simplify the electronics required in IPT systems while maintaining proper operation. In addition to the simplicity of the proposed systems, robustness against load variations is achieved due to the stability of the system, and overall efficiency improvement.
