Adaptive dynamic surface control for three-phase PWM voltage source rectifier

An adaptive controller is designed for three-phase pulse width modulation (PWM) voltage source rectifier with parametric uncertainties based on the dynamic surface control (DSC) technique. The unknown parameters of the system are estimated by applying the adaptive control method. In addition, the problem of “explosion of complexity” in backstepping design procedure is avoided by using the DSC technique. Lyapunov analysis demonstrates that all signals in the closed-loop system are globally uniformly ultimately bounded. The tracking errors of the q axis current and the output voltage converge to a small neighborhood of the origin by appropriately choosing the design parameters. Simulation results validate the efficacy of the proposed controller.