Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 26, Issue 11, Pages 3183-3191Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2011.2141153
Keywords
Boost inversion ability; quasi-Z-source inverter (qZSI); switched-inductor; Z-source inverter (ZSI)
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Funding
- Korean Ministry of Education, Science and Technology (The Regional Core Research Program/Biohousing Research Institute)
- Ministry of Knowledge Economy
- Korea Institute for Advancement of Technology
- Honam Leading Industry Office through Leading Industry Development for Economic Region
- National Research Foundation of Korea [2011-04-대-06-021] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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 48V(dc) input and an ac output line-to-line voltage of 120 V-rms. The simulation and experimental results verified that the converter has high step-up inversion ability.
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