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Random pulse width modulation techniques are used in AC motors powered by two-level three-phase inverters, which cause a broadband spectrum of voltage, current, and electromagnetic force. The voltage distribution across a wide range of…

系统与控制 · 电气工程与系统科学 2024-06-07 Jian Wen , Xiaobin Cheng , Peifeng Ji , Jun Yang , Feng Zhao

We study the effect of common noise on coupled active rotators. While such a noise always facilitates synchrony, coupling may be attractive or repulsing. We develop an analytical approach based on a transformation to approximate…

统计力学 · 物理学 2017-12-21 Anastasiya V. Dolmatova , Denis S. Goldobin , Arkady Pikovsky

This paper investigates the influence of different motor stator failures on the common-mode (CM) current. The stator winding failures will affect the motor's CM impedance, and also increase the unbalance of the differential-mode (DM) noise…

系统与控制 · 电气工程与系统科学 2021-10-07 Fei Fan , Zhenyu Zhao , Pengfei Tu , Huamin Jie , Kye Yak See

Solid-state qubits hold the promise to achieve unmatched combination of sensitivity and spatial resolution. To achieve their potential, the qubits need however to be shielded from the deleterious effects of the environment. While dynamical…

量子物理 · 物理学 2016-11-26 Masashi Hirose , Clarice D. Aiello , Paola Cappellaro

We present a method developed to actively compensate common-mode magnetic disturbances on a multi-sensor device devoted to differential measurements. The system uses a field-programmable-gated-array card, and operates in conjunction with a…

仪器与探测器 · 物理学 2019-01-23 Giuseppe Bevilacqua , Valerio Biancalana , Yordanka Dancheva , Antonio Vigilante

Quantum noise in a model of singly resonant frequency doubling including phase mismatch and driving in the harmonic mode is analyzed. The general formulae about the fixed points and their stability as well as the squeezing spectra…

量子物理 · 物理学 2007-05-23 C. Cabrillo , J. L. Roldan , P. Garcia-Fernandez

We construct an analytical theory of interplay between synchronizing effects by common noise and by global coupling for a general class of smooth limit-cycle oscillators. Both the cases of attractive and repulsive coupling are considered.…

适应与自组织系统 · 物理学 2019-04-02 Denis S. Goldobin , Anastasiya V. Dolmatova

Modeling power electronic converters at frequencies close to or above half the switching frequency has been difficult due to the time-variant and discontinuous switching actions. This paper uses the properties of moving Fourier coefficients…

系统与控制 · 电气工程与系统科学 2024-06-28 Hongchang Li , Kangping Wang , Jingyang Fang , Wenjie Chen , Xu Yang

It is well-established that a proportional current control gain emulates a resistor in the converter output impedance. Even though this resistance can provide additional damping to grid resonances, its effect for traditional linear current…

系统与控制 · 电气工程与系统科学 2024-06-24 Orcun Karaca , Ioannis Tsoumas , Tinus Dorfling , Ran Chen , Lennart Harnefors

The in-circuit common-mode (CM) impedance at the AC input of a motor drive system (MDS) provides valuable inputs for evaluating and estimating the CM electromagnetic interference (EMI) noise generated by the switching of power semiconductor…

系统与控制 · 电气工程与系统科学 2021-10-20 Zhenyu Zhao , Fei Fan , Arjuna Weerasinghe , Pengfei Tu , Kye Yak See

We study the noise effects in a driven system of globally coupled oscillators, with particular attention to the interplay between driving and noise. The self-consistency equation for the order parameter, which measures the collective…

统计力学 · 物理学 2009-10-31 H. Hong , M. Y. Choi , K. Park , B. -G. Yoon , K. -S. Soh

The objective of this research is to mitigate vibrations in induction motors. To achieve this goal, a discontinuous pulse width modulation (PWM) control strategy based on carrier wave modulation is proposed for multilevel inverters. This…

系统与控制 · 电气工程与系统科学 2024-01-31 A Ruiz-Gonzalez , JR Heredia-Larrubia , FM Perez-Hidalgo , M Meco-Gutierrez

The influence of multiple vibrational modes on current fluctuations in electron transport through single-molecule junctions is investigated. Our analysis is based on a generic model of a molecular junction, which comprises a single…

介观与纳米尺度物理 · 物理学 2014-09-26 C. Schinabeck , R. Härtle , H. B. Weber , M. Thoss

An implementation of a harmonic injection pulse width modulation frequency-modulated triangular carrier (HIPWM-FMTC) control strategy applied to a multilevel power inverter feeding an asynchronous motor is presented. The aim was to justify…

系统与控制 · 电气工程与系统科学 2024-01-30 Antonio Ruiz-Gonzalez , Juan-Ramon Heredia-Larrubia , Mario J. Meco-Gutierrez , Francisco-M. Perez-Hidalgo

A polarization switching pulse interleaver is shown to be effective in reducing timing noise due to polarization mode dispersion in time and frequency transfer based on mode-locked lasers and standard single-mode fibres. In closed-loop time…

光学 · 物理学 2025-02-20 Thomas Fordell , Anders E. Wallin , Thomas Lindvall , Kalle Hanhijärvi

Noise can induce coherent oscillations in excitable systems without periodic orbits. Here, we establish a method to derive a hybrid system approximating the noise-induced coherent oscillations in excitable systems and further perform phase…

适应与自组织系统 · 物理学 2022-05-26 Jinjie Zhu , Yuzuru Kato , Hiroya Nakao

Phase turbulence is suppressed by applying common noise additively to the Kuramoto-Sivashinsky type equation, and the noise-induced phase synchronization is realized. The noise strength necessary for the suppression of phase turbulence is…

混沌动力学 · 物理学 2015-06-26 H. Sakaguchi

An estimation problem of fundamental interest is that of phase synchronization, in which the goal is to recover a collection of phases using noisy measurements of relative phases. It is known that in the Gaussian noise setting, the maximum…

最优化与控制 · 数学 2016-11-02 Huikang Liu , Man-Chung Yue , Anthony Man-Cho So

In this manuscript we propose a theoretical model where the magneto-resistive elements are modelled as fluctuating resistances to correct the output voltage noise of tunnel magnetic junction (MTJ) from standard electronic circuits. This…

This work identifies the general approach for linearising any power system component in the harmonic domain, that is with respect to its Fourier series coefficients. This ability enables detailed harmonic analysis, and is key as more power…

系统与控制 · 电气工程与系统科学 2025-03-31 Josh Schipper , Radnya Mukhedkar , Neville Watson , Veerabrahmam Bathini , Jan Meyer
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