Extended Boost Switched-Embedded-Capacitor-Inductor ZSI with Low Voltage Stress on Capacitors and Soft-Start Capability

被引:5
作者
Abbasi, Milad [1 ]
Mardaneh, Mohammad [1 ]
Eslahchi, Amir Hosein [1 ]
Hashemi, Zhale [1 ,2 ]
机构
[1] Shiraz Univ Technol, Dept Elect Engn, Shiraz, Iran
[2] Islamic Azad Univ, Zarghan Branch, Dept Elect Engn, Zarghan, Iran
关键词
Switched-capacitor-inductor Z-source inverter; Switched-inductor; Z-source inverter;
D O I
10.1080/03772063.2021.1875891
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In the present article, the boost factor of the Z-source inverter is noticeably increased by using the switched-inductor structure. The proposed inverter is based on the switched-inductor Z-source inverter which has two series diodes in its switched-inductor. In the proposed ZSI instead of these two series diodes, two capacitors are used. In comparison with the conventional structure, in the smaller duty cycle ratio the proposed structures generate higher voltage. Besides, in the second proposed structure to reduce the voltages on the capacitors of the Z-source network, a dc source is placed between the inverter bridge and the Z-source network. The dc source and the inverter have common ground in both the proposed structures. The conventional and proposed inverters are thoroughly investigated to find out their governing relations, then, the boost factor and voltage across capacitors in both proposed and conventional inverters are compared with each other by simulating them in PSCAD/EMTDC. Next, the prototypes of the proposed inverters with 25 V dc input voltage are used to evaluate the obtained results.
引用
收藏
页码:1842 / 1851
页数:10
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