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Research on neutral point potential balance of NPC 3-L inverter based on SVPWM
2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2018A new modulation method is proposed to balance the neutral-point potential in the DC side in the three-level three-phase neutral-point-clamped (3-LNPC)voltage source inverter. Through analyzing the rotation of the reference vector in different small triangles, different measures of the proposed method are taken to eliminate the influence of the medium ...
Hangpeng Xu +3 more
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A strategy of neutral-point potential balancing control for three-level indirect matrix converter
2nd IET Renewable Power Generation Conference (RPG 2013), 2013According to the three-level neutral-point potential balancing problem of three-level indirect matrix converter (TLIMC), a virtual space vector modulation strategy was firstly introduced in TLIMC in solve this problem, which hasn't yet been discussed today. This modulation strategy is divided into two control stages.
null Haipeng Jiang, null Yongqiang Liu
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Leakage Current Suppression and Balance Control of Neutral Point Potential for Three‐Level Inverter
International Journal of Circuit Theory and ApplicationsABSTRACTNonisolated three‐level inverter has the problem of leakage current and neutral‐point (NP) potential imbalance in photovoltaic grid‐connected system. Therefore, a new subregional vector‐optimized modulation strategy is proposed, which can be adopted to achieve leakage current suppression and NP potential balance control in full power factor and
Ningning Meng, Yongzhi Min, Zhilong Shi
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Long-horizon direct model predictive control with active balancing of the neutral point potential
2017 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE), 2017In this paper we present modifications to the sphere decoder initially introduced in [1] to include the control of the neutral point (NP) potential of a three-level neutral point clamped (NPC) inverter. By linearizing the system model, the nonlinearities introduced by the dynamics of the NP potential are discarded. As a result, the optimization problem
Liegmann, Eyke +4 more
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A neutral point potential balance control strategy based on vector controlled VIENNA rectifier
2010 IEEE Energy Conversion Congress and Exposition, 2010The neutral point potential is an important problem when designing three-phase/level/switch VIENNA rectifier. The imbalance of neutral point potential not only increases voltage stresses of power device, but also results in harmonic distortion of input current waveform.
LiGao He, Xinbing Chen
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2020 7th International Forum on Electrical Engineering and Automation (IFEEA), 2020
The traditional two-level and three-level converters have their own disadvantages when the energy does not need to flow bidirectionally. In this paper, the topological structure and working principle of the three-level three-switch VIENNA rectifier are deeply analyzed.
Danli Liao +3 more
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The traditional two-level and three-level converters have their own disadvantages when the energy does not need to flow bidirectionally. In this paper, the topological structure and working principle of the three-level three-switch VIENNA rectifier are deeply analyzed.
Danli Liao +3 more
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The Study on the Neutral-Point Potential Balance Based on Coordinate System for Three-Level Inverter
2016 International Conference on Industrial Informatics - Computing Technology, Intelligent Technology, Industrial Information Integration (ICIICII), 2016Three-Level Inverter is quite a practical topological structure, but its own flaws lie in Neutral-Point Potential Balance. The article covers the impact of method of virtual space vector pulse width modulation on mid-point potential. The simulation model of Neutral-Point Potential Algorithm is established based on MATLAB.
Liang Wang +3 more
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Novel Neutral Point Potential Balance Control Scheme for NPC Three-Level Inverter
2016The neutral point (NP) voltage variation is studied; the relationship between NP voltage variation and the overlap is analyzed, in this paper. And a new SPWM control method for three-level (3L) inverter is proposed. A closed loop system is built by altering the displacement of the carriers in the vertical direction in the proposed method, and the ...
Bo Gong, Shanmei Cheng
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Neutral-point potential balancing strategy for three-level ANPC converter base on discontinuous PWM
2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2017A neutral-point potential balancing strategy for three-level active neutral point clamp (ANPC) converter based on discontinuous PWM is presented. In this paper, a novel discontinuous space-vector pulse width modulation (DSVPWM) is proposed. Compared with the traditional three-level space vector pulse width modulation (SVPWM), this strategy can ...
Ying Liu +4 more
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Study on the Leakage Current and Neutral-Point Potential Balance in TL-Boost Photovoltaic System
2016In this paper, TL-Boost is adopted as a front-end converter in the non-isolated photovoltaic grid-connected system, the common-mode leakage current equivalent circuit of TL-Boost circuit is established, and the calculation formula of leakage current of the system is derived. On this basis, a conclusion that the common-mode leakage current of the system
Gang Cheng +4 more
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