Results 21 to 30 of about 1,313,437 (283)
Transient Oscillation Suppression Method of Modular Multilevel DC Transformer
IEEE Access, 2020 The modular multilevel DC transformer (MMDCT) is more likely to suffer from transient oscillation, which is caused by insufficient damping of the equivalent RLC circuit with smaller arm resistance and submodule capacitance and may threaten the system ...
Dan Lyu +5 more
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机车电传动, 2022 In electrified railway operation, it is easy to result in low-frequency oscillation if the electrical parameters of the locomotive and the traction network are mismatched. This will not only hamper the power supply protection of the traction network, but
LI Xiangchao, NIU Ke
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Kongzhi Yu Xinxi Jishu, 2021 Due to the mismatch of main circuit parameters and the negative impedance characteristics of inverter-motor system under specific operating conditions, urban rail transit traction system is prone to DC-link voltage oscillation.
LI Tingting +4 more
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Study on Coupling Oscillation of Urban Rail Vehicle Traction System
机车电传动, 2019 The DC power supply of urban rail vehicle was the key to good speed regulation performance of traction system. Limited by many factors such as on-board converter and harmonic suppression, the traction system was prone to DC side coupling oscillation ...
Yan MU
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Applied Sciences, 2023 Aiming at the problem of ultra-low-frequency oscillation (ULFO) in power systems, with an oscillation frequency lower than 0.1 Hz, an oscillation suppression control method is proposed. Firstly, the mathematical modeling of the system is carried out, and
Xueyang Zeng +4 more
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Zhongguo dianliThe serious mid-and high- frequency oscillation issue in modular multilevel convertor based high voltage direct current (MMC-HVDC) systems poses a significant threat to the normal operation of power systems.
Yechun XIN +5 more
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EngineeringElectron beam–directed energy deposition (EB–DED) has emerged as a promising wire-based metal additive manufacturing technique. However, the effects of EBs on pendant droplets at wire tips have not yet been determined. The aim of this study is to enhance
Zhiyue Liang +6 more
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Suppression of Low-Frequency Gamma Oscillations by Activation of 40-Hz Oscillation [PDF]
Cerebral Cortex, 2021 Abstract Gamma oscillations have received considerable attention owing to their association with cognitive function and various neuropsychiatric disorders. However, interactions of gamma oscillations at different frequency bands in humans remain unclear. In the present magnetoencephalographic study, brain oscillations in a wide frequency
Shunsuke Sugiyama +7 more
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Limit cycle oscillation control and suppression [PDF]
The Aeronautical Journal, 1999 AbstractThe prediction and characterisation of the limit cycle oscillation (LCO) behaviour of non-linear aeroelastic systems has become of great interest recently. However, much of this work has concentrated on determining the existence of LCOs. This paper concentrates on LCO stability.
Dimitriadis, Grigorios +1 more
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IEEE Access, 2023 This paper focuses on the power grid oscillation of grid-side converter (GSC) in doubly-fed induction generator (DFIG) caused by grid sub-synchronous oscillation (SSO), and designs a measure to improve the output power quality of GSC.
Dongyang Sun +5 more
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