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Direct Single-Phase AC–AC Converters Based on Series Impedance Networks.
- Source :
- IEEE Transactions on Power Electronics; Dec2018, Vol. 33 Issue 12, p10380-10389, 10p
- Publication Year :
- 2018
-
Abstract
- In this paper, a novel direct ac–ac converter based on the coupled inductor Z-source networks is proposed that offers a wide range of buck–boost operation. A total of two Z-source networks, called the coupled switched inductor and the modified switched coupled inductor, are employed that enable the ac–ac converter to deliver a wide voltage range. The proposed converter with both networks provides free-wheeling current paths for the inductors currents during the state transitions, which results in solving the commutation problems and the need for snubber circuits. A simple switching strategy is then proposed that helps to share a common magnetic core between the coupled inductors. For any particular voltage gain, the proposed structures require a smaller duty cycle compared to the conventional ones; therefore, a smaller inductance is required. Simulation and experimental results are provided to confirm the theoretical achievements. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 33
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 131880875
- Full Text :
- https://doi.org/10.1109/TPEL.2018.2807128