Isolated seven‐level inverter for grid‐connected power systems with predictive control method
| Autor: | Ortatepe, Zafer |
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| Rok vydání: | 2022 |
| Předmět: |
Design
model predictive control capacitor voltage balancing Applied Mathematics 7-level (7L) isolated multi-level (MLI) inverter Transformer Multilevel Inverter Topology Computer Science Applications Electronic Optical and Magnetic Materials Implementation DC-AC power conversion Electrical and Electronic Engineering Minimum Number Components |
| Zdroj: | International Journal of Circuit Theory and Applications. 50:3119-3135 |
| ISSN: | 1097-007X 0098-9886 |
| Popis: | A novel isolated 7-level (7L) multi-level inverter (MLI) topology for grid-connected medium and high voltage power applications is presented in this paper. The topology consists of two isolated transformers with different winding ratio and four switches connected to a single-phase grid. This topology provides a great advantage over conventional MLIs by reducing passive and active components to allowing a 7L output voltage. Moreover, model predictive control (MPC) method is implemented to 7L-MLI to generate gate signals of switches and ensure capacitor voltage balancing and grid connection. Performance of proposed topology has been confirmed by in-depth analysis under simulation and laboratory setup with existing studies. Experimental results of a 1.5 kW 220 V-rms prototype are presented to support the simulation results. The prototype shows that the harmonic results match the limits of the IEC 61000-3-2 standard and show a better performance for grid connection and capacitor voltage balancing than conventional ones. |
| Databáze: | OpenAIRE |
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