- Title
- Low-voltage ride-through capability of full-row connected cascaded H-bridge converters
- Creator
- Tafti, Hossein Dehghani; Maswood, Ali Iftekhar; Konstantinou, Georgios; Pou, Josep; Townsend, Christopher D.
- Relation
- 2016 IEEE Region 10 Conference (TENCON). Proceedings of the 2016 IEEE Region 10 Conference (Singapore 22-25 November, 2016) p. 984-987
- Publisher Link
- http://dx.doi.org/10.1109/TENCON.2016.7848152
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2016
- Description
- The full-row connection of dc-links provides an alternative configuration for the cascaded H-bridge (CHB) converter in large-scale grid-connected photovoltaic systems. In each stage, a single PV string is connected to all phases through isolated dc/dc converters. The per-phase power imbalance issue and second-harmonic voltage of the dc-link capacitors are alleviated by using this topology. This paper studies the low-voltage ride-through (LVRT) capability of the HB inverter with full-row connection in a grid-connected photovoltaic power plant (GCPVPP). A control algorithm is implemented for the isolated dc/dc converters which balances the capacitor voltages during voltage sags and reduces the second-harmonic voltage ripple of the dc-link capacitors. The performance of the grid-connected HB inverter with LVRT capability is investigated on a 3-MVA single-row, three-level CHB converter for the GCPVPP connected to a 6.6 kV grid.
- Subject
- capacitors; voltage control; power quality; inverters; topology; frequency conversion
- Identifier
- http://hdl.handle.net/1959.13/1392056
- Identifier
- uon:33331
- Identifier
- ISBN:9781509025978
- Language
- eng
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