Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation
Bridge circuits; Computer architecture; Electric inverters; Insulated gate bipolar transistors (IGBT); Large scale systems; Level control; Maximum power point trackers; Photovoltaic cells; Real time systems; Cascaded H bridge (CHB); Cascaded H-bridge; Cascaded H-bridge inverters; Control architectur...
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2023
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my.uniten.dspace-236272023-05-29T14:50:36Z Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation Vavilapalli S. Umashankar S. Sanjeevikumar P. Ramachandaramurthy V.K. Mihet-Popa L. Fed�k V. 57194778035 57199091461 18134802000 6602912020 6506881488 56007516100 Bridge circuits; Computer architecture; Electric inverters; Insulated gate bipolar transistors (IGBT); Large scale systems; Level control; Maximum power point trackers; Photovoltaic cells; Real time systems; Cascaded H bridge (CHB); Cascaded H-bridge; Cascaded H-bridge inverters; Control architecture; Maximum power point tracking controls; Multilevel; Power conditioning systems; PV inverter; Controllers; air conditioning; building; bypass; computer simulation; dynamic response; irradiation; model validation; photovoltaic system; real time In large-scale PV power stations, Cascaded H-Bridge (CHB) inverter based PV power conditioning systems are recommended over a conventional Two-Level Inverter based systems since CHB operates at medium voltage levels and provides better power quality. An insulated-gate bipolar transistor (IGBT) based H-bridge along with the auxiliaries such as DC link capacitors, breakers, contactors, bypass switch, voltage and current transducers is the fundamental power module of a CHB inverter. In this paper, the procedure for selection of components for Basic building block is presented. Due to a higher number of H-Bridge modules in a large-scale system, it is difficult to control the system with a single controller card. In this work, a control architecture for three-phase CHB based PV power conditioning systems is proposed in which the controls are distributed into three different stages. With the proposed control architecture, independent Maximum power point tracking (MPPT) controls of each PV array is carried out at module level itself. Carrying out MPPT controls at module level helps in improving the computational speed and in maintaining modularity. Hardware requirements of individual processor cards also minimized with the proposed control architecture. In this work, functionalities of each controller card namely module level control card, phase-level control card and master controller cards are explained in detail. Detailed interfacing and signal exchange between H-Bridge modules and the other controller cards are also presented. Controller-in-loop simulations are carried out with the help of Real-Time Simulator to validate the functionalities of each controller card. Real-Time simulation results are presented to verify the operation of the system with the proposed control architecture. Performance and dynamic response of MPPT controls for sudden changes in irradiance inputs on PV arrays are studied. Operation of the system during unequal irradiance inputs on the PV arrays is also analyzed. Current sharing between PV Inverter and grid to feed a fixed load for different values of irradiance inputs is explained through the presented results. � 2018 Final 2023-05-29T06:50:35Z 2023-05-29T06:50:35Z 2018 Article 10.1016/j.apenergy.2018.08.059 2-s2.0-85051813345 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85051813345&doi=10.1016%2fj.apenergy.2018.08.059&partnerID=40&md5=9da33650dbf1f7e293ce0e4fe0cf38ce https://irepository.uniten.edu.my/handle/123456789/23627 229 1111 1127 Elsevier Ltd Scopus |
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Bridge circuits; Computer architecture; Electric inverters; Insulated gate bipolar transistors (IGBT); Large scale systems; Level control; Maximum power point trackers; Photovoltaic cells; Real time systems; Cascaded H bridge (CHB); Cascaded H-bridge; Cascaded H-bridge inverters; Control architecture; Maximum power point tracking controls; Multilevel; Power conditioning systems; PV inverter; Controllers; air conditioning; building; bypass; computer simulation; dynamic response; irradiation; model validation; photovoltaic system; real time |
| author2 |
57194778035 |
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57194778035 Vavilapalli S. Umashankar S. Sanjeevikumar P. Ramachandaramurthy V.K. Mihet-Popa L. Fed�k V. |
| format |
Article |
| author |
Vavilapalli S. Umashankar S. Sanjeevikumar P. Ramachandaramurthy V.K. Mihet-Popa L. Fed�k V. |
| spellingShingle |
Vavilapalli S. Umashankar S. Sanjeevikumar P. Ramachandaramurthy V.K. Mihet-Popa L. Fed�k V. Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation |
| author_sort |
Vavilapalli S. |
| title |
Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation |
| title_short |
Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation |
| title_full |
Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation |
| title_fullStr |
Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation |
| title_full_unstemmed |
Three-stage control architecture for cascaded H-Bridge inverters in large-scale PV systems � Real time simulation validation |
| title_sort |
three-stage control architecture for cascaded h-bridge inverters in large-scale pv systems � real time simulation validation |
| publisher |
Elsevier Ltd |
| publishDate |
2023 |
| _version_ |
1806426298701053952 |