Repozytorium publikacji - Politechnika Gdańska

The focus is on the maximum power point tracking implementation for the buck-boost voltage mode control of a single-phase multilevel inverter based on a three-level neutral point clamped quasi-Z-source topology. To utilize shoot-through states only when boost function is needed and avoid it in the buck mode, two different control approaches are required. This work proposes merged control system which provides switching between different control algorithms in the buck and boost modes. In particular, a hysteresis band between the buck and boost modes is proposed which provides smooth and stable performance. It also includes features of the implementation of the global maximum power point tracking, which can scan the entire input voltage range in up to 10 seconds. Experimental results showed that proposed control system provides high and stable MPPT efficiency in different operation points. Finally, the key features are verified, the advantages, drawbacks, and an eventual potential for other applications are presented in conclusions.

Autorzy

• Oleksandr Husev,
• Dmitri Vinnikov,
• Carlos Roncero-Clemente,
• Professor Frede Blaabjerg,
• prof. dr hab. inż. Ryszard Strzelecki link otwiera się w nowej karcie