Results 21 to 30 of about 175,835 (309)
Third harmonic current minimization using third harmonic blocking transformer
Indonesian Journal of Electrical Engineering and Computer Science, 2022 Zero sequence blocking transformers (ZSBTs) are used to suppress third harmonic currents in 3-phase systems. Three-phase systems where single-phase loading is present, there is every chance that the load is not balanced. If there is zero-sequence current due to unequal load current, then the ZSBT will impose high impedance and the supply voltage at the
Vishnuprasada Vittal Bhat, Pinto Pius
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Harmonic feature of 27.5 kV traction power system in a Chinese high‐speed railway
IET Electrical Systems in Transportation, 2022 The key to controlling harmonics in high‐speed railways is to get information on its harmonic feature. In this study, a continuous 24 h harmonic observation is carried out in Ji'an West traction substation of a typical Chinese high‐speed railway. In both
Yadong Fan +7 more
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Energy Reports, 2022 Due to the existence of high amount stator current harmonics caused by the inverter nonlinearity, the operation performance of Permanent Magnet Servo System (PMSS) used Proportional–Integral (PI) controller will be affected.
Tianqing Yuan +3 more
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Coordinated control for harmonic mitigation of parallel voltage-source inverters
CES Transactions on Electrical Machines and Systems, 2018 The increasing use of power electronic devices can deteriorate the power quality by introducing voltage and current harmonics. In islanded microgrids, the presence of nonlinear loads can distort the point of common coupling (PCC) voltage, while the dead ...
Yang Qi +3 more
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Theory of Josephson effect in unconventional superconducting junctions with diffusive barriers [PDF]
, 2006 We study theoretically the Josephson effect in junctions based on unconventional superconductors with diffusive barriers, using the quasiclassical Green's function formalism.
A. A. Golubov +12 more
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Time Dependency of Current Harmonics for Switch-Mode Power Supplies
Applied Sciences, 2020 This paper presents the time-dependent variance in the current harmonics emission by power supplies during power quality measurements. Power quality problems are becoming more significant with the adoption of power electronic-based circuits such as power
Muhammad Naveed Iqbal +5 more
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Directed harmonic currents near hyperbolic singularities [PDF]
Ergodic Theory and Dynamical Systems, 2017 Let $\mathscr{F}$ be a holomorphic foliation by curves defined in a neighborhood of $0$ in $\mathbb{C}^{2}$ having $0$ as a hyperbolic singularity. Let $T$ be a harmonic current directed by $\mathscr{F}$ which does not give mass to any of the two separatrices. We show that the Lelong number of $T$ at $0$ vanishes.
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Current Harmonic Suppression of BLDC Motor Utilizing Frequency Adaptive Repetitive Controller
Machines, 2022 Compared to the proportional-integral strategy, the repetitive control strategy possesses high suppression ability for the alternating current (AC) harmonics of control signals.
Tianqing Yuan, Yupeng Zhang
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Effect of optimal torque control on rotor loss of fault-tolerant permanent-magnet brushless machines [PDF]
, 2002 A faulted phase in a fault-tolerant permanent-magnet brushless machine can result in significant torque ripple. However, this can be minimized by using an appropriate optimal torque control strategy.
Atallah, K. +3 more
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Improvement of detectability for CMOS floating gate defects in supply current test [PDF]
, 2003 We already proposed a supply current test method for detecting floating gate defects in CMOS ICs. In the method, increase of the supply current caused by defects is promoted by superposing a sinusoidal signal on the supply voltage.
Hondo, Tsutomu +4 more
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