Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems
Bridge circuits; Capacitors; Cascade control systems; Electric inverters; Feedforward control; Photovoltaic cells; Power quality; Quality control; Voltage control; Feedforward control methods; Grid fault conditions; Low voltage ride through (LVRT); Low-voltage ride-through; Medium voltage; Modular m...
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Institute of Electrical and Electronics Engineers Inc.
2023
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my.uniten.dspace-237202023-05-29T14:51:14Z Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems Sochor P. Tan N.M.L. Akagi H. 56997455100 24537965000 7102912290 Bridge circuits; Capacitors; Cascade control systems; Electric inverters; Feedforward control; Photovoltaic cells; Power quality; Quality control; Voltage control; Feedforward control methods; Grid fault conditions; Low voltage ride through (LVRT); Low-voltage ride-through; Medium voltage; Modular multilevel cascade inverters; Photovoltaic systems; Zero sequence current; Electric power system control This paper presents theoretical and experimental discussions on low-voltage-ride-through operation of a modular multilevel single-delta bridge-cell (SDBC) inverter intended for utility-scale photovoltaic (PV) systems. Modern grid codes require grid-tied inverters to provide dynamic grid support during grid-fault events by injecting reactive current. This paper discusses decoupled positive- and negative-sequence reactive-current control, focusing on asymmetric voltage sags with imbalanced magnitude and phase relationships. The main objective is to present a feedforward control method based on calculation of the zero-sequence current required for achieving power balance during normal and grid-fault conditions. Moreover, this paper demonstrates a practical method that minimizes overcurrent stress in the three inverter clusters by adjusting active power drawn from PV arrays. Experimental results on a three-phase 12.6-kVA system prove that the SDBC inverter is capable of seamlessly operating through asymmetric voltage sags. � 1972-2012 IEEE. Final 2023-05-29T06:51:13Z 2023-05-29T06:51:13Z 2018 Conference Paper 10.1109/TIA.2018.2845893 2-s2.0-85048510061 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048510061&doi=10.1109%2fTIA.2018.2845893&partnerID=40&md5=c524e09fe4bde20580e24d4d935fb91e https://irepository.uniten.edu.my/handle/123456789/23720 54 5 8378265 4739 4751 Institute of Electrical and Electronics Engineers Inc. Scopus |
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| description |
Bridge circuits; Capacitors; Cascade control systems; Electric inverters; Feedforward control; Photovoltaic cells; Power quality; Quality control; Voltage control; Feedforward control methods; Grid fault conditions; Low voltage ride through (LVRT); Low-voltage ride-through; Medium voltage; Modular multilevel cascade inverters; Photovoltaic systems; Zero sequence current; Electric power system control |
| author2 |
56997455100 |
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56997455100 Sochor P. Tan N.M.L. Akagi H. |
| format |
Conference Paper |
| author |
Sochor P. Tan N.M.L. Akagi H. |
| spellingShingle |
Sochor P. Tan N.M.L. Akagi H. Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems |
| author_sort |
Sochor P. |
| title |
Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems |
| title_short |
Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems |
| title_full |
Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems |
| title_fullStr |
Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems |
| title_full_unstemmed |
Low-Voltage-Ride-Through Control of a Modular Multilevel Single-Delta Bridge-Cell (SDBC) Inverter for Utility-Scale Photovoltaic Systems |
| title_sort |
low-voltage-ride-through control of a modular multilevel single-delta bridge-cell (sdbc) inverter for utility-scale photovoltaic systems |
| publisher |
Institute of Electrical and Electronics Engineers Inc. |
| publishDate |
2023 |
| _version_ |
1806427808137740288 |
| score |
13.214268 |