| With the development of modern technology, inverters are widely used. Meanwhile, various industries have set higher requirements on the performance of inverters. Good output wave forms of inverters have not only the good steady-state performance, but also the fast dynamic response. It is very difficult for single control strategy to satisfy the two requirements at the same time. Thus,hybrid control strategy is developing because the strategy can take good advantage of every part while avoiding its fault.This paper devotes to research the inverter power supply control technology. First, this article analyses the inverter power supply systems and establishes mathematical model and MATLAB simulation model of a single-phase inverter. This paper begins with the analysis of the inverter's output characteristic, then proposes a hybrid control strategy based on the principles and design methods of fuzzy self-tuning PI control and repetitive control, in which the repetitive controller is used to improve stability response and fuzzy self-tuning PI controller is used to improve dynamic response. The results of MATLAB simulation show that the hybrid control strategy can make a satisfactory performance.Finally, the paper introduces the hardware and software design of the control system of inverter based on the DSPTMS320F2812. |
