Microgrid operation improvement by adaptive virtual impedance [PDF]
IET Renewable Power Generation, 2018 Microgrids (MGs) are regarded as the best solution for optimal integration of the renewable energy sources into power systems. However, novel control strategies should be developed because of the distinct inherent feature of MG components in comparison to conventional power systems.
Eskandari, M, Li, L
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Adaptive Virtual Impedance Droop Control Based on Consensus Control of Reactive Current [PDF]
Energies, 2018 It is difficult to achieve accurate distribution of reactive power based on conventional droop control due to the line impedance mismatch in an islanded microgrid.
Zhilin Lyu +4 more
doaj +2 more sources
Adaptive Droop Control Using Adaptive Virtual Impedance for Microgrids With Variable PV Outputs and Load Demands [PDF]
IEEE Transactions on Industrial Electronics, 2021 In microgrids, intermittency of renewable energy sources (RES) and uncertain state-of-charge (SoC) of energy storage systems (ESS) can cause power deficiency to some distributed generation units (DGs). In this case, DGs with power deficiency may not meet the power demand, resulting in voltage collapse or frequency divergence.
Zilin Li +3 more
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Power Control Strategy of Microgrid Based on Adaptive Virtual Impedance
Kongzhi Yu Xinxi Jishu, 2018 In order to balance the load power sharing, adding virtual impedance is a simple and effective way. It proposed a new control method based on multiple second-order generalized integrator (MSOGI) harmonic detection and adaptive virtual impedance, which ...
JIA Yaoqin, HU Changhua, HE Qiaohui
doaj +2 more sources
Varying rate adaptive hybrid position–impedance control for robot-assisted ultrasonic examination system [PDF]
Mechanical Sciences, 2022 Robot ultrasound has great potential for reducing the workload of a sonographer, improving the access to nursing care, producing more accurate imaging, and avoiding direct contact with patients.
Z. Xie, Z. Yan
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Adaptive Virtual Synchronous Generator Modulation Strategy Based on Moment of Inertia, Damping Coefficient and Virtual Impedance [PDF]
, 2022 The technology of virtual synchronous generator improves the limitations of inverter control strategy and enhances the acceptance of new energy generation in traditional power system, and yet it greatly affects the frequency dynamic regulation ability of
Ge, Shengsheng, Zhang, Jiawen
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Power Equalization Strategy Based on Adaptive Virtual Impedance
Journal of Physics: Conference Series, 2023 Abstract Due to the differences in the line resistance of each distributed generation unit, conventional sag control does not allow for precise distribution of power, which also reduces the problem of system reactive power accuracy. To address this problem, this paper analyzes the power equalization and distribution conditions.
Xiong Lv +4 more
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Adaptive Impedance-Conditioned Phase-Locked Loop for the VSC Converter Connected to Weak Grid
Energies, 2021 In this paper, an adaptive version of the impedance-conditioned phase-locked loop (IC-PLL), namely the adaptive IC-PLL (AIC-PLL), is proposed. The IC-PLL has recently been proposed to address the issue of synchronisation with a weak AC grid by ...
Mostafa A. Hamood +2 more
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Adaptive Virtual Flux Droop Control Based on Virtual Impedance in Islanded AC Microgrids [PDF]
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022 Virtual flux droop (VFD) method is a scheme, in which, instead of frequency and voltage amplitude, the phase angle and amplitude of the virtual flux are, respectively, adjusted to active and reactive power sharing. However, mismatched line impedances lead to improper power sharing.
Saheb Khanabdal +3 more
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IET Power Electronics, 2022 Solid state transformer (SST) is designed as a power transmission device between AC grids and DC grids. However, the power fluctuation causes unbalanced power sharing among dual active bridge (DAB) converters and large voltage fluctuations on dc buses ...
Zhi Liu +6 more
doaj +1 more source