Three-Phase Modular Cascaded H-Bridge Multilevel Inverter with Individual MPPT for Grid-Connected Photovoltaic Systems
Conference
·
OSTI ID:1069279
- The University of Tennessee
A three-phase modular cascaded H-bridge multilevel inverter for a grid-connected photovoltaic (PV) system is presented in this paper. To maximize the solar energy extraction of each PV string, an individual maximum power point tracking (MPPT) control scheme is applied, which allows the independent control of each dc-link voltage. PV mismatches may introduce unbalanced power supplied to the three-phase system. To solve this issue, a control scheme with modulation compensation is proposed. The three-phase modular cascaded multilevel inverter prototype has been built. Each H-bridge is connected to a 185 W solar panel. Simulation and experimental results are presented to validate the proposed ideas.
- Research Organization:
- The University of Tennessee, Knoxville, TN; Oak Ridge National Laboratory, Oak Ridge, TN
- Sponsoring Organization:
- USDOE; USDOE EE Office of Solar Energy Technology (EE-2A)
- DOE Contract Number:
- EE0005342
- OSTI ID:
- 1069279
- Report Number(s):
- DOE/EE0005342-1
- Country of Publication:
- United States
- Language:
- English
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