TY - GEN
T1 - A novel buck-boost AC-AC converter with inverting and non-inverting operation and no commutation problem
AU - Ahmed, Hafiz Furqan
AU - Cha, Honnyong
AU - Aleem, Zeeshan
AU - Khan, Ashraf Ali
AU - Kim, Heung Geun
N1 - Publisher Copyright:
© 2015 Korean Institute of Power Electronics.
PY - 2015/7/27
Y1 - 2015/7/27
N2 - In this paper, a new type of ac-ac converter is proposed which can operate as traditional non-inverting buck and boost converter or inverting buck-boost converter. The proposed converter is immune from shorting of voltage source even when all switches are turned on simultaneously, and therefore, PWM switching dead-times are eliminated to produce high quality output waveform. Owning to the benefit that only two switches are switching at high frequency, the switching losses are reduced which allow the high frequency operation with reduced passive filter requirements. Compared to the traditional non-inverting buck and boost ac-ac converter which can only step-down or step-up the input voltage respectively, the proposed topology has both step-down and step-up operations with or without voltage inversion. Moreover, while operating as non-inverting buck and boost converter, it has lower switch voltage stresses, lower inductor current stress and ripple current than the traditional inverting buck-boost ac-ac converter. A detailed topology analysis is presented followed by experimental results to prove the advantages of the proposed converter.
AB - In this paper, a new type of ac-ac converter is proposed which can operate as traditional non-inverting buck and boost converter or inverting buck-boost converter. The proposed converter is immune from shorting of voltage source even when all switches are turned on simultaneously, and therefore, PWM switching dead-times are eliminated to produce high quality output waveform. Owning to the benefit that only two switches are switching at high frequency, the switching losses are reduced which allow the high frequency operation with reduced passive filter requirements. Compared to the traditional non-inverting buck and boost ac-ac converter which can only step-down or step-up the input voltage respectively, the proposed topology has both step-down and step-up operations with or without voltage inversion. Moreover, while operating as non-inverting buck and boost converter, it has lower switch voltage stresses, lower inductor current stress and ripple current than the traditional inverting buck-boost ac-ac converter. A detailed topology analysis is presented followed by experimental results to prove the advantages of the proposed converter.
KW - Ac-ac converter
KW - buck-boost capability
KW - inverting and non-inverting operation
KW - reversing or maintaining phase angle
UR - http://www.scopus.com/inward/record.url?scp=84961956339&partnerID=8YFLogxK
U2 - 10.1109/ICPE.2015.7167891
DO - 10.1109/ICPE.2015.7167891
M3 - Conference contribution
AN - SCOPUS:84961956339
T3 - 9th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2015-ECCE Asia
SP - 920
EP - 926
BT - 9th International Conference on Power Electronics - ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia
Y2 - 1 June 2015 through 5 June 2015
ER -