NDLI: FFS modulated VSC with different phase-shifted 12-pulse configured transformers for grid integrated large-scale solar PV plant

Content Provider	IET Digital Library
Author	Karmakar, Subir Mishra, Nidhi Singh, Bhim
Abstract	The requirement for high capacity power conditioning unit (PCU) has increased for application in large-scale solar photovoltaic (PV) plant for optimisation of the balance of system cost. For high power applications, one of the most important criteria for designing of PCU is to have lower switching losses to minimise the heat generated in the power switching devices. Conventionally, PCU utilises traditional two-level or three-level voltage source converter (VSC) topology with high-frequency switching techniques and due to this, they have lower conversion efficiency and higher device switching losses. In this study, fundamental frequency switching (FFS) modulated three-level neutral point clamp (3L-NPC) VSC is used for MW scale PCU, as they have lower switching losses, higher conversion efficiency and higher AC/DC voltage ratio. The 3L-NPC VSC generates lower order current harmonics, which are mitigated by using different phase-shifted 12-pulse PCU transformers located at different pooling location inside solar PV plant. The PV plant configuration for a 40 MW (AC) plant capacity is developed in the Matlab/Simulink environment and implemented in real-time simulator OPAL-RT to validate the proposed concept. Harmonics, steady-state and dynamic performances are demonstrated at constant and changing solar irradiance levels.
Starting Page	1746
Ending Page	1754
Page Count	9
ISSN	17521416
Volume Number	14
e-ISSN	17521424
Issue Number	Issue 10, Jul (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/14/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.0970
Journal	IET Renewable Power Generation
Publisher Date	2020-04-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3L-NPC VSC 40 MW Plant Capacity Control of Electric Power System Different Phase-shifted 12-pulse Configured Transformers Different Phase-shifted 12-pulse PCU Transformers Different Pooling Location FFS Modulated VSC Fundamental Frequency High Capacity Power Conditioning Unit High Power Application High-frequency Switching Technique Higher Conversion Efficiency Higher Device Switching Loss Invertors Large-scale Solar Photovoltaic Plant Large-scale Solar PV Plant Lower Conversion Efficiency Lower Order Current Harmonics Lower Switching Loss MW Scale PCU PCU Utilises Traditional Two-level Photovoltaic Power System Power 40.0 MW Power Converter Power Generation Control Power Grid Power Supplies to Apparatus Power Switching Device PV Plant Configuration PWM Invertors Solar Irradiance Levels Solar Power Stations Switching Converter System Cost Three-level Neutral Point Clamp
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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