Research on Waveform Library Control

Although repetitive controlled PWM inverters present an excellent steady-state performance even under severe nonlinear cyclic loads, they do not present a good dynamic performance under non-periodic disturbances. Aiming to solve this problem, the proposed method composed of repetitive control and a novel control method based on online waveform measure. The novel control method is based on the rated open loop waveforms instead of mathematical model as usual, it is easy to be realized because it only needs to collect the typical system response waveform without the mathematical model. The repetitive control is used here to decrease the state error. The feasibility of the method is verified by the simulation and experiment results