摘要
全桥推挽式双向DC/DC变换器大都采用状态空间平均法来建模,建模过程复杂。以隔离型推挽式双向DC/DC变换器为研究对象,采用PWM开关模型法获得了变换器的等效电路模型。基于该等效模型,构建了变换器在不同工作模式下的闭环控制系统,进行了电压控制环的设计和校正,实现了不同工作模式下的恒压充放电控制策略。实验和仿真结果验证了结论的正确性。
Full bridge push-pull bi-directional DC/DC converters are mostly modeled by state space averaging method with the complex modeling process. Taking the isolated form push-pull bi-directional DC/DC converter as the research object, this paper adopted the pulse-width modulation switch model method to obtain the equivalent circuit model of this converter. Based on this model, this paper constructed a closed-loop control system of the converter under different working modes, carried out the design and verifcation of voltage control loop and realized the constant voltage charge-discharge control strategy. The experimental and simulation results verify the correctness of the conclusion.
出处
《电工电气》
2017年第11期14-17,共4页
Electrotechnics Electric
基金
广东省省级科技计划项目(2015B020238013)
广东省自然科学基金资助项目(2015A030313487)
关键词
全桥推挽
PWM开关模型
恒压控制
full bridge push-pull
pulse-width modulation switch model
constant voltage control
