Results 171 to 180 of about 8,894 (204)

Study on control strategy for three-phase four-leg inverter power supply

30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004, 2005
This 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), 2016
The 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, Zhang Xiaoyong, Fu Maosheng   +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, 2010
Distributed 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, B. Wu, M. Rivera, C. Rojas, V. Yaramasu, A. Wilson   +5 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, 2009
The 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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Theoretical Analysis of the AC Current Ripple in Three-Phase Four-Leg Sinusoidal PWM Inverters

2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), 2020
Three-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., Mandrioli R., Hammami M., Ricco M., Grandi G.   +4 more
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Research of transient process on three-phase four-leg inverter with unbalanced load

2017 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2017
For three-phase four-leg inverter, symmetrical component method and double closed-loop control is a traditional method to sustain the symmetry of three-phase output voltage in steady-state under unbalanced load, but asymmetrical output voltage is still generated in transient process.
Zhongkai Yi, Xiaohe Ran, Zhimin Li, Meng Zhao   +3 more
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Output voltage control of a four-leg inverter based three-phase UPS

2007 European Conference on Power Electronics and Applications, 2007
An all scalar PWM and control approach for the four-leg inverter based three phase transformerless UPS is proposed. The output voltage of each phase is controlled independently and its controller is formed by a stationary frame resonant filter bank accompanied with proportional control and output capacitor current based active damping loops.
Ahmet M. Hava, Eyyup Demirkutlu
openaire   +1 more source

Analysis and Simplification of Three-Dimensional Space Vector PWM for Three-Phase Four-Leg Inverters

IEEE Transactions on Industrial Electronics, 2011
The main objective of this paper is to simplify the implementation of continuous and discontinuous 3-D space vector pulsewidth modulations (SVPWMs). This paper analyzes the relationships, whether in or coordinates, between three-phase voltages and the following elements: the tetrahedron in which the reference vector resides, three adjacent active ...
Xiangsheng Li, Zhiquan Deng, Zhida Chen, Qingzhao Fei   +3 more
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Comparison of modulation techniques for active split DC-bus three-phase four-leg inverters

2014 IEEE Energy Conversion Congress and Exposition (ECCE), 2014
Three-phase four-leg inverters are commonly employed to supply unbalanced loads avoiding the use of a transformer. A suitable output filter is necessary to improve the harmonic content of the output voltage and current waveforms. To this aim, different kind of filters, presenting both symmetrical or asymmetrical phase-to-phase and phase-to-neutral ...
BIFARETTI, STEFANO, Lidozzi, A, Solero, L, Crescimbini, F.   +3 more
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Design and control of a three-phase four-leg inverter for solid-state transformer applications

2013 15th European Conference on Power Electronics and Applications (EPE), 2013
This paper proposes the use of a three-phase four-leg (3P4L) converter in combination with an LCL filter for the inverter stage of a solid state transformer (SST). This configuration gives full control over the line-to-line, as well as the line-to-neutral voltage and currents, while providing exceptional harmonics mitigation.
Shri, A., Popovic, J., Ferreira, J.A., Gerber, M.B.   +3 more
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