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Virtual Synchronous Generator Based Current Synchronous Detection Scheme for a Virtual Inertia Emulation in SmartGrids
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- Parwal, Arvind (author)
- Uppsala universitet,Elektricitetslära
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- Fregelius, Martin (author)
- Uppsala universitet,Elektricitetslära
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- Cardosa Silva, Dalmo (author)
- Department of Electrical Engineering, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
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- (creator_code:org_t)
- Scientific Research Publishing, 2019
- 2019
- English.
- In: Energy and Power Engineering. - : Scientific Research Publishing. - 1949-243X .- 1947-3818. ; 11:3, s. 99-131
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Renewable energy sources, such as photovoltaicwind turbines, and wave power converters, use power converters to connect to the grid which causes a loss in rotational inertia. The attempt to meet the increasing energy demand means that the interest for the integration of renewable energy sources in the existing power system is growing, but such integration poses challenges to the operating stability. Power converters play a major role in the evolution of power system towards SmartGrids, by regulating as virtual synchronous ge-nerators. The concept of virtual synchronous generators requires an energy storage system with power converters to emulate virtual inertia similar to the dynamics of traditional synchronous generators. In this paper, a dynamic droop control for the estimation of fundamental reference sources is imple-mented in the control loop of the converter, including active and reactive power components acting as a mechanical input to the virtual synchronous generator and the virtual excitation controller. An inertia coefficient and a droop coefficient are implemented in the control loop. The proposed con-troller uses a current synchronous detection scheme to emulate a virtual iner-tia from the virtual synchronous generators. In this study, a wave energy converter as the power source is used and a power management of virtual synchronous generators to control the frequency deviation and the terminal voltage is implemented. The dynamic control scheme based on a current synchronous detection scheme is presented in detail with a power manage-ment control. Finally, we carried out numerical simulations and verified the scheme through the experimental results in a microgrid structure.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Dynamic Droop Control
- Energy Storage
- Virtual Inertia
- Virtual Synchronous Generator
- Engineering Science with specialization in Science of Electricity
- Teknisk fysik med inriktning mot elektricitetslära
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- ref (subject category)
- art (subject category)
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