Seven Level Voltage Source Converter Based Static Synchronous Compensator with a Constant DC-Link Voltage
| Autor: | Fausto Pedro García Márquez, Ramesh Devarapalli, Gudapati Sambasiva Rao, L. Narayana Gadupudi |
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| Rok vydání: | 2021 |
| Předmět: |
seven level voltage source converter (VSC)
Technology QH301-705.5 Computer science QC1-999 terminal voltages law.invention Electric power system Flexible AC transmission system law Control theory General Materials Science Voltage source Biology (General) Transformer reactive power QD1-999 Instrumentation Fluid Flow and Transfer Processes Total harmonic distortion Physics Process Chemistry and Technology General Engineering High voltage AC power Engineering (General). Civil engineering (General) STATCOM Computer Science Applications Chemistry Capacitor binary weighted transformer TA1-2040 |
| Zdroj: | Applied Sciences, Vol 11, Iss 7330, p 7330 (2021) Applied Sciences Volume 11 Issue 16 |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11167330 |
| Popis: | Flexible alternating current transmission system (FACTS) controllers are important to enhance the quality of power in power systems. The stability of a system is achieved via a FACTS device (a Static Synchronous Compensator (STATCOM)). This paper aims to control the losses in the transmission system during peak energy demand circumstances with minimal losses in the economical and functional efficiency of the system. The STATCOM operation of a seven level voltage source converter (VSC) with binary-weighted transformers is proposed for controlling the reactive power variations and terminal voltage changes at dynamic circumstances in the transmission system. The STATCOM is operated at 132 kV and is a 50 Hz AC system with a single DC-Link capacitance and two VSC power circuits. Each VSC circuit consists of three H-bridges with specific switching angle control in order to achieve low total harmonic distortion at the fundamental frequency. The coupled control circuit phenomenon is imperative for computing the switching angle for a stable performance. The dynamic functional improvement efficiency is harvested with a minimum number of switches and transformers used in high voltage and high-power applications. The number of switches, transformers, and capacitors for 132 kV are optimized with a proposed STATCOM operation in seven level VSC with binary-weighted transformers. The simulated results prove that the proposed model significantly improved system performance and stability. |
| Databáze: | OpenAIRE |
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