A Novel Hybrid Control Approach for Frequency and Voltage Regulation in IPT Systems

The purpose of the inductive power transfer (IPT) system is to deliver sufficient power from the power supply to the load via a magnetic coupler. To optimise the efficiency, transmission power, and stability of IPT systems, it is essential to sustain the resonant conditions of the system while stabilising the output voltage in the presence of parameter variations. Therefore, in a fully realised IPT system, the primary objectives are precisely tuning the operating frequency and regulating the output voltage. This paper proposes a novel hybrid control strategy that integrates a phase‐locked loop utilising the second‐order generalised integrator (SOGI) with phase shift control. The proposed method effectively maintains the stability of the output voltage and the resonant state of the system by concurrently adjusting the operating frequency and the phase shift angle, employing the variable frequency phase shift (VFPS) algorithm. The control strategy demonstrates high precision, provides a smooth transient response during start‐up across a range of operational conditions, and ensures that ZVS operation can be achieved. Furthermore, it significantly enhances the system's robustness in the presence of parameter fluctuations. The superiority of this approach is validated through a comprehensive analysis of MATLAB simulation results and empirical testing on a dedicated experimental setup.