Deshu Cheng

Hybrid Modeling and Simulation for the Boost Converter in Photovoltaic System

Photovoltaic (PV) system is composed of several elements as solar cells, boost converter, inverter and load. Owing to the existence of converters, photovoltaic system is a hybrid system contains continuous dynamic and discrete dynamic. Traditionally, the power electronic converter is difficult to model. This paper illustrates the modeling method of hybrid system, especially finite automata model. Based on finite state machine (FSM), the hybrid modeling of boost converter is presented. Finally, provides a simulation environment for such combination between continuous time system and finite automata, which employs the simulink and stateflow from Matlab.

Grid-Connected Control and Simulation of Single-Phase Two-Level Photovoltaic Power Generation System Based on Repetitive Control

A further research on Grid-connected photovoltaic system was made in this paper. The author made a design for the control of single-phase two-level photovoltaic power generation system based on Repetitive control. In order to achieve a precise control to the Grid-current, the maximum power point tracking and the Grid-connected Inverter`s control were realized respectively. Finally, the whole design for the Grid-connected photovoltaic system has been verified through simulating with the help of MATLAB software. A set of experimental results carried out on a computer is provided to validate the proposed approach. All the work done was of great significance on the development of Grid-connected PV system.