Photovoltaic Grid-Connected System BasedOn Cascaded Quasi-Z-Source Network

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering

article

T. Hari Hara Kumar¹  P. Aravind¹ 

[1] Dept. of EEE, K L University

关键词: Distributed Generation;    Quasi Z Source network;    Clamped;    Shoot through and Non-Shoot through states.;   

DOI  :  10.15662/ijareeie.2014.0310029

来源: Research & Reviews

【 摘 要 】

Renewable energy sources are being widely used for Distributed Generation (fuel cells, solar panels, Wind power generators etc..,) because of their advantages. But they produce a very low output voltage. To interconnect a low-dc-voltage to residential loads a special voltage matching converter is required. This paper presents a back to back connection of cascaded quasi-Z-source network based step up DC/DC converter and 3-level diode clamped inverter. The proposed system reduces the component stresses and size of the converter. This network provides voltage boost and buck functions in single stage without any additional switches by the introduction of special switching strategy. The proposed cascaded qZSI inherits all the advantages of the traditional solution (voltage boost and buck functions in a single stage, continuous input current, and improved reliability). The results are analyzed by Matlab- Simulink environment.

【 授权许可】

Unknown