半桥式三端口变换器建模与解耦控制  

Modeling and Decoupling Control of Three-port Half-bridge Converters

作　　者：张君君[1] 吴红飞[1] 曹锋[1] 朱励历 邢岩[1] 

机构地区：[1]江苏省新能源发电与电能变换重点实验室(南京航空航天大学),江苏省南京市210016

出　　处：《中国电机工程学报》2015年第3期671-678,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51377083);江苏省自然科学基金项目(BK2012794);江苏省高校优秀科技创新团队项目资助~~

摘　　要：提出一种半桥三端口变换器的解耦控制方法,实现系统的能量管理和各端口控制环路间的解耦。给出一种基于竞争策略的功率控制方法,变换器可以在不同工作状态下稳定工作且能够实现在各工作状态之间自由切换;采用状态空间平均法建立半桥三端口变换器的小信号模型,详细分析了各端口之间控制量与被控量的耦合关系,据此提出一种解耦控制方法,通过设置控制环路带宽和引入解耦控制变量,将其多输入–多输出控制系统转化成多个单输入–单输出控制系统,实现各端口控制环路之间的近似解耦;实验结果表明,功率控制策略的正确性和解耦控制方法的有效性。A novel control strategy with decoupling was proposed for three-port half-bridge converters（TP-HBC）, achieving power management between multiple ports with decoupled close-loop control. To realize smooth and seamless mode transition, a competitive strategy was used to obtain steady-state functions under various working modes. The small signal model of TP-HBC was built by the state-space averaging method, and interactions between the control and controlled variables of the multiple control loops were analyzed in detail. Based on that, the decoupling variables were employed and the bandwidth of the multiple control loops were set far away, to decouple the multi-input multi-output control system into several single-input single-output subsystems. Thus, the decoupling control of TP-HBC is approximately achieved. Finally, experimental results verify the effectiveness and correctness of the control strategy and the decoupling method.

关 键 词：多端口变换器 小信号建模 解耦控制 直流变换器 

分 类 号：TM85[电气工程—高电压与绝缘技术]