摘要
近年来,Z源逆变器、准Z源逆变器的提出解决了传统电压源逆变器在应用中的诸多局限,受到了很大的关注,但拓扑本身的一些不足也限制了其进一步的发展。本文对一种带抽头电感的准Z源逆变器进行研究,通过分析其各种工作模态,发现该拓扑具有更高的升压能力,更小的电容电压应力;本文使用状态空间平均法,提出了该类阻抗源逆变器拓扑的一般化直流侧小信号模型,并根据控制量与输出量之间的传递函数,分析了升压网络参数及直通占空比变化对系统的影响;同时设计了闭环调节器,相较于Z源逆变器、准Z源逆变器,其动态性能得到了提高。最后通过仿真和实验验证了上述特性。
In recent years, the Z-source inverter and the quasi-Z-source inverter are proposed to solve the limitations of the traditional voltage source inverter, which attract a great deal of attention. However, the shortcomings of those two topologies limit their further developments. Here a new type of tapped inductor quasi-Z-source inverter is researched to achieve higher boost ability and smaller capacitor voltage stress. This paper first proposes the generalized DC side small-signal model by using the state-space averaging method, and analyses the impact of the vary in boost network parameters and shoot-through zero state on the system based on the transfer function. The closed-loop regulator of the DC bus voltage is also designed to improve the dynamic performance of the system. Finally, simulations and experiments are carried out to validate the above characteristics.
出处
《电工技术学报》
EI
CSCD
北大核心
2014年第6期7-16,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(50977045)
江苏省研究生培养创新工程(CX10B_101Z)资助项目
关键词
抽头电感
准Z源逆变器
小信号模型
闭环控制
Tapped inductor
quasi-Z-source inverter
small signal model
closed-loop control
