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Wind Turbine Harmonics caused by Unbalanced Grid Currents
2007 Compatibility in Power Electronics, 2007For wind turbines that feed into public grids limits for voltage and current harmonics must be assured. To verify that the actual levels are valid, measurements are necessary. Problems can occur to determine which part of these harmonics has its origin in the wind turbine.
Klaus-Dieter Dettmann +2 more
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Nonsinusoidal power caused by measurements of grid impedances at unbalanced grid voltages
2008 International School on Nonsinusoidal Currents and Compensation, 2008At low-voltage level there is already a commercial measurement device that is able to identify the grid impedance in dependency of time and frequency. Since at the low-voltage level a four-wire system and at the medium-and high-voltage level a three-wire system is installed, the method to identify the grid impedance has to be varied.
null Trung Do Thanh +3 more
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Analysis of wind driven grid connected induction generators under unbalanced grid conditions
IEEE Transactions on Energy Conversion, 1994A wind driven induction generator feeding power to the grid has been analyzed under the abnormal condition of unbalanced grid voltages. Using the symmetrical component and double revolving field theory, appropriate equivalent circuits and model equations have been derived for the generating mode with suitable realistic modifications.
A.H. Ghorashi +3 more
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Stability analysis of grid-connected inverter under unbalanced grid
2023 IEEE 6th International Electrical and Energy Conference (CIEEC), 2023Pingyu Li, Bao Xie, Weike Zheng
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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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Circulating Current Suppression for MMC-HVDC under Unbalanced Grid Conditions
IEEE Transactions on Industry Applications, 2016Modular multilevel converter (MMC) is believed the most competitive solution for high-voltage direct current (HVDC) transmission using voltage source converters. Circulating current suppressing strategies based on proportional resonant (PR) controllers are widely used in MMC. This kind of strategies can effectively eliminate all the circulating current
null Jinyu Wang +3 more
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Inner Current Controls of Grid-Connected PV for Unbalanced Grid Conditions
2021 North American Power Symposium (NAPS), 2021Abdulhakim Alsaif +2 more
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Flexible Control Schemes for Grid-Tied Inverters Under Unbalanced Grid Voltage Conditions
2019This paper investigates flexible control schemes for a three-phase grid-connected inverter, especially under unbalanced grid voltage conditions. PWM controlled three-phase voltage source inverters (VSIs) are widely used in renewable energy-based power generation systems for performing various advanced energy management and power flow control functions,
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Sliding Mode Control Strategy of Grid-Connected Inverter under Unbalanced Grid Voltage
2022 IEEE 5th International Electrical and Energy Conference (CIEEC), 2022Yuanyuan Wu +5 more
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