DC-Link Voltage Control Based on Adaptive IRM-ILQ for Stirling Engine Power Supply Vehicle

The growing concern over the increasing scale and frequency of natural disasters has increased the demand for a power supply vehicle that supplies electricity from renewable energy. These vehicles offer versatile and flexible deployment capabilities, while also addressing environmental issues by reducing carbon emissions and minimizing their overall impact. This paper introduces a new approach to obtain optimal voltage control in the power supply vehicle equipped with a Free Piston Stirling Engine Generator (FPSEG) fueled by wood biomass and solar power, along with a battery. The proposed method employs an Inverse Reference Model-Inverse Linear Quadratic (IRM-ILQ) control technique to ensure stable operation and enhance performance. By utilizing an error model based on the inverse reference model derived from voltage equations, the DC link voltage of the FPSEG is effectively regulated through the inverse reference technique. Additionally, the ILQ design method determines the optimal feedback gain. Optimal control of the DC link voltage minimizes FPSEG losses and achieves maximum efficiency and maximum output operation. The effectiveness of this control method is confirmed through simulation.