摘要
Z源逆变器凭借其独特的优点正逐步取代传统逆变器成为研究热点。但传统Z源逆变器直流侧电压应力过高,Z源网络电容电压应力过大,升压范围有限,这些不利因素限制了其应用范围。提出了一种新型的Z源逆变器拓扑采用三次谐波注入控制策略,详细分析了其工作原理。通过与简单升压控制方式下传统拓扑结构比较得出:新拓扑结合三次谐波注入控制可以显著减小直流侧电压及电容电压应力,同时能实现软启动减小启动过程的电压冲击。仿真结果验证了分析的正确性。
Now Z-Source Jnverter was a replacing traditional inverter and becoming a research focus. But the voltage stress was high both in DC input and the Z-source network in traditional Z-source inverters, and its wide application was restricted. In order to solve this problem, a new type Z-source structure with third harmonic injection control strategy was proposed. The principle and operation modes were analyzed. Compared with traditional boost-type Z-Source topologies, the proposed topology offered lower voltage sterss. What＇s more, soft-start strategy could be implemented to suppress the inrush surge arising in the start process. Finally, simulation results demonstrate good performance of the proposed inverter.
出处
《电源技术》
CAS
CSCD
北大核心
2014年第12期2346-2348,2395,共4页
Chinese Journal of Power Sources
基金
"青蓝工程"资助项目
关键词
Z源逆变器
新拓扑结构
电压应力
三次谐波注入
Z-Source Inverter
new topology
voltage stress
third harmonic injection control strategy
