Research on Hybrid Logic Dynamic Model and Voltage Predictive Control of Photovoltaic Storage System

Abstract

This paper investigates microgrid systems characterized by the coexistence of discrete events and continuous events, a typical hybrid system. By selecting the charging and discharging processes of the energy storage unit as logical variables, a mixed logical dynamic (MLD) model for the microgrid in islanded mode is established. Based on this model, model predictive control (MPC) theory is employed to optimize the energy management strategy, aiming to stabilize the DC bus voltage of the photovoltaic (PV) unit and minimize the switching frequency of the energy storage unit’s charging and discharging processes during system operation.

Keywords

• microgrid systems
• hybrid systems
• mixed logical dynamical model
• model predictive control
• energy management strategy