Journal
IET POWER ELECTRONICS
Volume 8, Issue 11, Pages 2176-2183Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-pel.2014.0841
Keywords
invertors; photovoltaic power systems; wind power plants; power convertors; inverter using; trans-Z-source network; photovoltaic systems; wind power generation systems; high power conversion system; power converters; power 2; 9 kW
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Funding
- MSIP (Ministry of Science, ICT and Future Planning), Korea under the C-ITRC (Convergence Information Technology Research Center) [IITP-2015-H8601-15-1002]
- Ministry of Public Safety & Security (MPSS), Republic of Korea [H8601-15-1002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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There is strong demand for high-power application for photovoltaic and wind power generation systems. The realisation of a high power conversion system is usually limited by the available switching devices because of the maximum voltage and current ratings, losses and switching frequency. Thus, utilising parallel-connected power converters rated at more minute power levels are highly desirable. A robust approach for such a realisation would result in many advantages, such as modularity, ease of maintenance, (n + 1) redundancy and high reliability. The parallel operation of a voltage-fed (VF) trans-Z-source inverter (ZSI) is presented. A two parallel connected VF-trans-ZSI is introduced and a similar concept is extended to N-parallel connected inverter. A 2.9 kW prototype inverter is built and tested to verify the performance of the proposed inverter.
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