Abstract
This study proposes a simple digital control strategy for a single-phase interleaved quasi-z-source inverter (QZSI) with active-power decoupling (APD). Requirements for QZSI and APD passive elements are presented and discussed. The QZSI-APD with the applied control features low input current and power ripples. Firstly, it was achieved by an interleaved approach; as a result, high-frequency ripples are partly compensated. Secondly, APD with a multi-resonant controller allowed a decrease in low-frequency input ripple. Thus, the proposed topology and control reduced the QZSI capacitors significantly. In addition, as compared to a Z-source inverter, QZSI capacitor sizes could be significantly decreased due to lower voltage levels. The study assumed a 2 kW photovoltaic string inverter; our results proved that the interleaved QZSI-APD is a suitable solution for kW-scale photovoltaic systems.
Original language | English |
---|---|
Title of host publication | Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 3725-3730 |
Number of pages | 6 |
ISBN (Electronic) | 978-150906684-1 |
DOIs | |
Publication status | Published - 26 Dec 2018 |
Event | 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 - Washington, United States Duration: 20 Oct 2018 → 23 Oct 2018 |
Conference
Conference | 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 |
---|---|
Country/Territory | United States |
City | Washington |
Period | 20/10/18 → 23/10/18 |
Keywords
- Active power decoupling
- Control strategy
- Interleaving
- Inverter
- PV application
- Quasi-z-source