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Control strategy for inverter in a micro-grid under unbalanced grid condition
2016 IEEE Conference on Technologies for Sustainability (SusTech), 2016Micro-grid is gaining momentum as it addresses grave concerns like climate change and energy security. This paper presents power flow control algorithm for voltage source inverter used in a micro-grid under unbalanced grid conditions. Energy Storage and local energy source are the key components of the micro-grid that is required to help stabilize grid.
L. Ashok Kumar, Sheeba Babu
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Voltage source converter control under unbalanced grid voltage conditions
2017 XXVI International Conference on Information, Communication and Automation Technologies (ICAT), 2017This paper proposes a novel control method for voltage source converter (VSC) connected to grid under unbalanced voltage conditions. The method is based on utilizing the full control capabilities of the switching converter. The proposed method makes the voltage source inverter (VSI) supply the voltages according to the requirements of the load and/or ...
Akhtar Rasool +2 more
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Performance of BDFIG During Balanced and Unbalanced Grid Conditions
2020 IEEE First International Conference on Smart Technologies for Power, Energy and Control (STPEC), 2020In this paper direct torque control (DTC) based brushless doubly fed induction generator (BDFIG) with space vector modulation (SVM) and a PI controller is proposed. Effective operation of DTC of BDFIG by improving steady state operation is proposed by minimizing flux and torque pulsations.
Upadhyayula J.A. Panini Sarma +1 more
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Small-Signal Model and Dynamics of MMC-HVDC Grid Under Unbalanced Grid Conditions
IEEE Transactions on Power Delivery, 2021Small-signal models (SSM) of modular multilevel converter (MMC) based HVDC grid under unbalanced grid conditions in recent literatures do not consider interactions between MMC and dc network. Therefore, it is necessary to correctly model the double-fundamental-frequency zero-sequence circulating currents (DFF-ZSCC) existing under unbalanced grid ...
Quanrui Hao +4 more
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Robust Backstepping Control of Synchronverters under Unbalanced Grid Condition
2019 IEEE Power and Energy Conference at Illinois (PECI), 2019Virtual Synchronous Generators, known as synchronverters, are inherently nonlinear systems and maintaining their consistent operation under faulty and distorted grid requires a nonlinear control design. This paper presents backstepping as an adaptive stabilizing technique which enables full power injection to the grid under unbalanced and weak ...
Sara Yazdani, Mehdi Ferdowsi
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Doubly-fed induction generator control during unbalanced grid conditions
2015 IEEE 13th Brazilian Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC), 2015In the last few years, the number of grid connected wind conversion systems (WECS) has increased rapidly. One of the most commercialized WECS technologies is the doubly-fed induction generator (DFIG) that offers operational and economical advantages over other ones.
Victor F. Mendes +4 more
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Control Strategy of Cascade STATCOM Under Unbalanced Grid Conditions
IETE Technical Review, 2014ABSTRACTPower network imbalance has become an increasingly serious problem, particularly in coal mines. This study presents an improved control strategy of cascade STATCOM under unbalanced grid conditions. This study investigates the balance and control of all DC capacitor voltages, from global balancing control, clustered balancing control and ...
Xia Zhenglong, Shi Liping, Yang Xiaodong
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An OCC-APF control strategy for unbalanced grid conditions
2015 IEEE Applied Power Electronics Conference and Exposition (APEC), 2015In this work it is proposed a DSP based, OCC control strategy for APF, which is able to work in case of unbalanced grid voltage, i.e. when it is affected by a common mode voltage. Proposed strategy is based on an OCC rectifier control which utilizes an input resistance control to set up dc-link voltage and achieve a unity power factor as well, and a ...
Alberto S. Lock +3 more
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2019 IEEE Industry Applications Society Annual Meeting, 2019
In this paper, Modular Multilevel Converter (MMC) is considered for integrating the giga-watt PV farms with the power grid. In the considered MMC configuration, the PV panels are directly connected across the sub modules of MMC. This MMC-configuration suffers from power imbalance between the arms, phases or both due to non-uniform illumination of the ...
Rahul Mishra +2 more
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In this paper, Modular Multilevel Converter (MMC) is considered for integrating the giga-watt PV farms with the power grid. In the considered MMC configuration, the PV panels are directly connected across the sub modules of MMC. This MMC-configuration suffers from power imbalance between the arms, phases or both due to non-uniform illumination of the ...
Rahul Mishra +2 more
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Energy Balancing Improvement of Modular Multilevel Converters Under Unbalanced Grid Conditions
IEEE Transactions on Power Electronics, 2017This paper presents a feedback/feed-forward control strategy to improve the voltage balancing of modular multilevel converters (MMCs) under unbalanced grid conditions. The inclusion of a feed-forward compensation improves the disturbance rejection capability against asymmetrical faults and sudden voltage imbalances in the ac grid.
Leon, Enrique Andres +1 more
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