This paper presents a feedback-less control strategy for dynamic wireless power transfer (DWPT) that removes the need for feedback between primary and secondary sides. The proposed method relies solely on the primary-side voltage and current onboard measurements to regulate the output voltage and maximize efficiency through adaptive inverter frequency and duty cycle control. In this study, a novel parameter—the equivalent resistance seen from the inverter output—is introduced and analyzed. Maximizing this parameter corresponds to operating at the point of highest efficiency (O2PHE), enabling optimal performance without feedback or detailed system modeling. The approach distinguishes mutual inductance variations from load changes in real time, enabling robust, feedback-less constant-voltage (CV) charging for electric vehicle (EV) applications. Experimental results demonstrate efficient operation and voltage regulation with high stability under varying load and coupling conditions.
