Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems
Bridge circuits; DC-DC converters; Energy conversion; HVDC power transmission; Photovoltaic cells; Renewable energy resources; Cascaded H-bridge inverters; Delta-configured; Low-voltage ride-through; Negative-sequence currents; Photovoltaic systems; Photovoltaics; Renewable energy source; Zero seque...
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Institute of Electrical and Electronics Engineers Inc.
2023
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my.uniten.dspace-230512023-05-29T14:37:35Z Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems Sochor P. Akagi H. Tan N.M.L. 56997455100 7102912290 24537965000 Bridge circuits; DC-DC converters; Energy conversion; HVDC power transmission; Photovoltaic cells; Renewable energy resources; Cascaded H-bridge inverters; Delta-configured; Low-voltage ride-through; Negative-sequence currents; Photovoltaic systems; Photovoltaics; Renewable energy source; Zero sequence current; Electric inverters This paper presents theoretical and experimental discussions on low-voltage-ride-through (LVRT) operation of a modular multilevel single-delta bridge-cell (SDBC) inverter intended for utility-scale photovoltaic (PV) systems. As the penetration of distributed generation from renewable energy sources connected to medium- and high-voltage grids increases, grid-tied inverters progressively need to abide to stricter grid codes, which demand measures to maintain reliability of the grid. The latest grid codes require inverters in generation systems to provide dynamic grid support in the event of grid faults by injection of a reactive current. This paper discusses two unique solutions for an SDBC inverter to enable dynamic grid support. One method is to inject a zero-sequence current through feedforward control within the inverter, and the other is by utilizing power from the distributed dc-dc converters. No negative-sequence current is injected into the grid in both cases. This paper also highlights the issue of voltage-sag transformation through delta-wye transformers and its effect on the LVRT capability of the SDBC inverter. Experimental results on a three-phase 12.6-kVA system prove that the SDBC inverter is capable of seamlessly operating through symmetric and asymmetric voltage sags. � 2017 IEEE. Final 2023-05-29T06:37:35Z 2023-05-29T06:37:35Z 2017 Conference Paper 10.1109/ECCE.2017.8096826 2-s2.0-85041486505 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85041486505&doi=10.1109%2fECCE.2017.8096826&partnerID=40&md5=3b2cee35ee52da15a9b90be76c659d80 https://irepository.uniten.edu.my/handle/123456789/23051 2017-January 8096826 4865 4872 Institute of Electrical and Electronics Engineers Inc. Scopus |
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| description |
Bridge circuits; DC-DC converters; Energy conversion; HVDC power transmission; Photovoltaic cells; Renewable energy resources; Cascaded H-bridge inverters; Delta-configured; Low-voltage ride-through; Negative-sequence currents; Photovoltaic systems; Photovoltaics; Renewable energy source; Zero sequence current; Electric inverters |
| author2 |
56997455100 |
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56997455100 Sochor P. Akagi H. Tan N.M.L. |
| format |
Conference Paper |
| author |
Sochor P. Akagi H. Tan N.M.L. |
| spellingShingle |
Sochor P. Akagi H. Tan N.M.L. Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems |
| author_sort |
Sochor P. |
| title |
Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems |
| title_short |
Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems |
| title_full |
Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems |
| title_fullStr |
Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems |
| title_full_unstemmed |
Low-Voltage-Ride-Through control of a modular multilevel SDBC inverter for utility-Scale photovoltaic systems |
| title_sort |
low-voltage-ride-through control of a modular multilevel sdbc inverter for utility-scale photovoltaic systems |
| publisher |
Institute of Electrical and Electronics Engineers Inc. |
| publishDate |
2023 |
| _version_ |
1806424033676230656 |
| score |
13.214268 |