Results 141 to 150 of about 208 (185)
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Design of the Neutral Line Inductor for Three-phase Four-leg Inverters
2019 IEEE Sustainable Power and Energy Conference (iSPEC), 2019The three-phase four-leg inverter is one of the advanced solutions to feed unbalanced loads. However, the design of the neutral line hasn’t been well studied yet. This paper presents a mathematical model of the three-phase four-leg inverter with neutral line inductor, which is decoupled in the αβ0 coordinate and illustrates the effects of the neutral ...
Weiqian Cai +7 more
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Simulation research on the control strategy of three-phase four-leg inverter
2010 International Conference on Computer Application and System Modeling (ICCASM 2010), 2010The four-leg inverter is able to provide simultaneous power supply for three-phase or single-phase load with symmetrical voltage and constant frequency. The prerequisite is that the four-leg inverter must be controlled appropriately, so the synchronous rotating control strategy based on the decomposition sequence is proposed in this paper. Firstly, the
null Chen Hongbing, null Min Jingyan
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An improved deadbeat plus plug-in repetitive controller for three-phase four-leg inverters
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017An improved deadbeat plus plug-in repetitive control scheme is proposed for grid-connected three-phase four-leg inverters to achieve fast and accurate feed-in grid current tracking. Discrete-time mathematical model of the three-phase four-leg grid-connected inverter is developed.
Yanyi Xing +4 more
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Integral-resonant voltage control for three-phase four-leg voltage source inverters
2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012This paper deals with a newly-conceived voltage control method for three-phase four-leg voltage source inverters (VSI) which are being required in autonomous power generating units devoted to supply both three-phase and single-phase electrical loads in four-wire electric power distribution systems.
LIDOZZI, ALESSANDRO +3 more
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Modeling, Analysis, and Mitigation of Load Neutral Point Voltage for Three-Phase Four-Leg Inverter
IEEE Transactions on Industrial Electronics, 2009The three-phase four-leg inverter is very suitable for the high-power uninterruptible power supply application, and the load neutral point voltage (LNPV) should meet the requirement. In this paper, two factors influencing the LNPV were revealed first, which are the switching states and the ratio of the neutral inductance to the phase inductance (k ...
Zeng Liu, Jinjun Liu, Jin Li
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Application of virtual synchronous generator technology in three-phase four-leg inverter
2017 20th International Conference on Electrical Machines and Systems (ICEMS), 2017A large number of distributed generations (DGs) connected to the distribution network have a significant impact on the stability of the power system due to their low inertia. Meanwhile the DGs are generally linked to the end of the distribution network, where power quality problems are very common. This paper applies virtual synchronous generator (VSG)
Zisen Qu +3 more
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Study on control strategy for three-phase four-leg inverter power supply
30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004, 2005This paper proposes a novel control strategy of a three-phase four-leg inverter power supply. In the synchronous coordinate, the control scheme with the output voltage differentiation as inside feedback loop is adopted, and the cross-channel coupling bringing from capacitance is eliminated by the capacitance current feed-forward, the decoupled control ...
null Hou ZhenYi, null Sun Jin
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Three-phase four-leg inverter based on current positive feedback control
2016 International Conference on Integrated Circuits and Microsystems (ICICM), 2016The power quality of grids has been influenced by the mounting number of asymmetric loads. Recently, the three-phase four-leg inverter which adds a bridge to three-phase three-bridge inverter has been researched because of the merit of the compact structure, small bulk and high efficiency.
Wang Xiangqing +2 more
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Predictive current control of three-phase two-level four-leg inverter
Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010, 2010Distributed power systems are getting more attention now-a-days due to their high flexibility and reliability. In this paper, predictive current control strategy is proposed for the grid-connected four-leg inverters. This kind of converter is developed to deliver power to the unbalanced/nonlinear three-phase loads and as well to the grid.
J. Rodriguez +5 more
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Theoretical Analysis of the AC Current Ripple in Three-Phase Four-Leg Sinusoidal PWM Inverters
2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), 2020Three-phase four-leg voltage-source inverters (VSIs) are currently considered for several renewable-energy and automotive applications, due to their inherent ability to deal with unbalanced ac currents through the 4th wire (neutral). Although conventional carrier-based and space vector modulations have been commonly applied and extensively studied for ...
Viatkin A. +4 more
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