Dual mode structure repetitive control of CVCF PWM inverters

In this paper, a dual-mode structure repetitive control (DMRC) is proposed to further improve the control performance of RC. Without additional complexity and loss of tracking accuracy, DMRC can achieve faster error convergence rate than conventional RC does. In the presence of nonlinear load disturbances and parameter uncertainties, an application example of DMRC controlled single-phase PWM inverter is provided to evaluate the proposed DMRC scheme. Systematical experimental results show the effectiveness and superior advantages of the DMRC approach.