1. Switched-Inductor Quasi-Z-Source Inverter.
- Author
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Minh-Khai Nguyen, Young-Cheol Lim, and Geum-Bae Cho
- Subjects
- *
ELECTRIC switchgear , *ELECTRIC inductors , *ELECTRIC inverters , *COMPARATIVE studies , *ELECTRIC potential , *SIMULATION methods & models - Abstract
This paper deals with a new family of high boost voltage inverters called switched-inductor quasi-Z-source inverters (SL-qZSIs). The proposed SL-qZSI is based on the well-known qZSI topology and adds only one inductor and three diodes. In comparison to the SL-ZSI, for the same input and output voltages, the proposed SL-qZSI provides continuous input current, a common ground with the dc source, reduced the passive component count, reduced voltage stress on capacitors, lower shoot-through current, and lower current stress on inductors and diodes. In addition, the proposed SL-qZSI can suppress inrush current at startup, which might destroy the devices. This paper presents the operating principles, analysis, and simulation results, and compares them with those of the SL-ZSI. To verify the performance of the proposed converter, a laboratory prototype was constructed with 48 Vdc input and an ac output line-to-line voltage of 120 Vrms. The simulation and experimental results verified that the converter has high step-up inversion ability. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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