Results 21 to 30 of about 13,972,114 (292)
Research on SVPWM Method and its Neutral Point Potential Control [PDF]
Advanced Engineering Forum, 2011 Neutral-point potential unbalance is an inherent problem of Neutral-point-clamped three-level PWM rectifiers. If the problem of neutral point can’t be controlled appropriately, the harm of input current will increase, and even the dc-link capacitor and switches will be destroyed.
Yan Liu, Xu Wang, Yan Xing
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工程科学学报, 2016 A novel discontinuous space-vector pulse width modulation(DSVPWM) strategy is proposed for a three-level neutralpoint-clamped(NPC) voltage source inverter.
LUO Xiao-fei +3 more
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Frontiers in Energy Research, 2022 Aiming at the problems that the existing arc suppression cabinet technology cannot adjust the zero sequence voltage flexibly and the control and hardware implementation of active arc suppression equipment based on power electronics are difficult, a new ...
Wu Lifang +7 more
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Investigation of ferroresonance phenomena in isolated 6 kV power network [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2023 Ferroresonance is a complex nonlinear electrical phenomenon that can cause significant dielectric and thermal stresses in power equipment, leading to potential faults, equipment damage, power supply interruptions, etc.
Jasika Ranko +2 more
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The improvement of model predictive control based on three-level three-phase inverter
Systems Science & Control Engineering, 2021 To improve the dynamic response of the inverter, the conventional proportional–integral controller and the modulation part are substituted by the finite-control step model predictive control (FCS-MPC) strategy.
Liyang Zhu, Xiao Zhao
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The Role of Causal Processes in the Neutral and Nearly Neutral Theories [PDF]
, 2007 In this paper, we will consider how the neutral and nearly neutral theories of molecular evolution differ from each other as a means for addressing causal processes associated with random drift and natural selection.
Michael R. Dietrich +6 more
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Research on three-phase four-wire NPC converter for Tokamak low-frequency resonance suppressor
Energy Reports, 2021 During the operation of Tokamak power system, a large number of low frequency harmonic currents with complex spectrum will be generated. Low-frequency resonance suppressor is an effective solution to suppress this low-frequency harmonic currents. The low-
Xianshun Shen +9 more
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Journal of Power Electronics, 2016 A novel Virtual Space Vector (VSV) modulation strategy for complete control of potential neutral point (NP) issues is proposed in this paper. The neutral point potential balancing problems of multi-level converters, which include elimination of low frequency oscillations and self-balancing for NP dc unbalance, are investigated first.
Chuan-Jin Zhang +5 more
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A neutral-point voltage balance control method for 3L-NPC converters
Frontiers in Energy ResearchThe inherent problem of neutral-point potential imbalance in three-level neutral-point-clamped (3L-NPC) converters increases the risk of overvoltage in switching devices, causes increased output harmonic content, and seriously affects the performance and
Jun Wang
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机车电传动, 2023 In order to study the influence of stray current from urban rail transit systems in dynamic operation on the magnetic bias characteristics of substations along the line, simulation analysis was conducted in the current study, with a coupled simulation ...
SUN Xiaopeng +4 more
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