Study on Passivity-Based Control of TNPC PV Grid-Connected Inverter

Abstract:

Euler-Lagrange (Euler-Lagrange, EL) mathematical model was established according to the topology of TNPC (T-type Neutral Point Clamped) PV grid-connected inverter. Based on the mathematical models and passivity-based control theory, the approach called injecting damping was adopted to design the passivity-based controller of the inverter. The passivity-based controller can decouple d-q axis current at AC side of the grid and achieve unity power factor, the total harmonic distortion of grid-connected current is low, and the passivity-based controller also make the inverter have good dynamic and static performances. Simulation results show that the designed passive controller of TNPC PV grid-connected inverter is feasible.

• Periodical: Applied Mechanics and Materials (Volumes 571-572)
• Pages: 1000-1005
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.571-572.1000
• Online since: June 2014
• Authors: Bai Le Zhang*, Jiu He Wang, Feng Jiao Zhao
• Keywords: Decoupling, Inject Damping, Passivity-Based Control, PV Grid-Connected Inverter, TNPC

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