Adaptive Smith Predictor for Enhanced Stability of Power Hardware-in-the-Loop Setups

The stability and accuracy of power hardware-in-the-loop (PHIL) setups are sensitive to deteriorated by the dynamics non-ideal characteristics their interfaces, such as time delay, noise perturbation, signal distortion. In this paper, a compensation scheme comprising Smith predictor compensator is proposed mitigate impact delay on PHIL stability. Furthermore, an online system impedance identification technique leveraged enhance robustness facilitate with adaptivity variation. Analytical assessment, simulation results, experimental results presented verify scheme. This enables robust stable testing novel technologies under varying ratios representative complex scenarios emerging within sector.