关键词: 光伏电池, 滑模控制, 双向直流变换器, 状态空间平均模型

Abstract:

In terms of the limitations of photovoltaic cell itself,the battery should be needed to assist to load power supply.In this paper,a bidirectional DC/DC converter is proposed mainly for battery charging and discharging system.Then a new type of sliding model controller is designed according to the state space averaging model of bidirectional DC/DC converter.Simulation results and analysis show that the static error is effectively reduced with stable output when the proposed bidirectional DC converter is adopted for the switch tube alternate conduction,thus better system stability and transient.

Key words: photovoltaic cell;sliding model;bidirectional DC DC converter;state space averaging method