TY - JOUR
T1 - A Modified Partial Power structure for Quasi Z-Source Converter to Improve Voltage Gain and Power Rating
AU - Honarmand, Shahin
AU - Rajaei, Amirhossein
AU - Shahparasti, Mahdi
AU - Luna, Alvaro
AU - Pouresmaeil, Edris
PY - 2019
Y1 - 2019
N2 - Employing partial power processing (PPP) technique for quasi Z-source converter (QZSC) a new structure of the converter is presented. Using PPP technique although eliminates electrical insolation, but permits reducing voltage and current stress at the semiconductors, if compared with full power proposals. In this work, two PPP structures are discussed: A first one, similar to the basic topology, where the output voltage of the power converter is in series with the input voltage; and a second one, where the output is in series with the capacitor of the QZSC. This minor modification, which requires no extra elements, improves the power rating, voltage gain, and requires a lower transformation ratio. An experimental prototype of the proposed converter has been tested and the results are compared with other implementations, permitting to validate the theoretical analysis as well as the advantages that this proposal provides.
AB - Employing partial power processing (PPP) technique for quasi Z-source converter (QZSC) a new structure of the converter is presented. Using PPP technique although eliminates electrical insolation, but permits reducing voltage and current stress at the semiconductors, if compared with full power proposals. In this work, two PPP structures are discussed: A first one, similar to the basic topology, where the output voltage of the power converter is in series with the input voltage; and a second one, where the output is in series with the capacitor of the QZSC. This minor modification, which requires no extra elements, improves the power rating, voltage gain, and requires a lower transformation ratio. An experimental prototype of the proposed converter has been tested and the results are compared with other implementations, permitting to validate the theoretical analysis as well as the advantages that this proposal provides.
KW - Partial power processing
KW - Quasi Z-source converters
KW - High step up converters
UR - http://www.scopus.com/inward/record.url?scp=85067397608&partnerID=8YFLogxK
U2 - 10.3390/en12112139
DO - 10.3390/en12112139
M3 - Article
VL - 12
JO - Energies
JF - Energies
SN - 1996-1073
IS - 11
M1 - 2139
ER -