In this paper, a new memcapacitor model and its corresponding circuit emulator are proposed, based on which, a chaotic oscillator is designed and the system dynamic
Two different control strategies for shunt capacitors including the local and neighboring schemes are applied to improve the voltage control in the system. First the dynamic simulation results for a specified long-term voltage instability scenario are explained and discussed then the static investigation is conducted based on the PV curves and
Dynamic simulations were undertaken to verify the method and to illustrate its robustness when dealing with various uncertain transient characteristics. It is shown to be capable of identifying
Absrtact: In this paper, dynamic analysis of series capacitors in multi-machine systems in discussed by making linear work point. To achieve stability in such systems, the number of
In this paper, a new memcapacitor model and its corresponding circuit emulator are proposed, based on which, a chaotic oscillator is designed and the system dynamic characteristics are investigated, both analytically and experimentally. Extreme multistability and coexisting attractors are observed in this complex system. The basins
In this work, we present new electrical measurements that allow us to probe deeper into both time-dependent and fluid imprint effects that occur in Hf 0.5 Zr 0.5 O 2 -based ferroelectric capacitors (FeCAPs) during partial polarization switching, thereby also providing insights into the multi-level switching dynamics in such devices.
Dynamic simulations were undertaken to verify the method and to illustrate its robustness when dealing with various uncertain transient characteristics. It is shown to be capable of identifying transients caused by switching of both isolated and back-to-back capacitors.
We study power harvesting using MEMS capacitors with single and dual air cavities that have been fabricated in our laboratory. Our goal is to achieve power harvesting
This article proposes a method to extract the half-bridge mosfet dynamic capacitances simply using a one-step measurement. By changing the terminal connection of
A constant on time variable frequency one-cycle control technique (CVFOCC) for switched-capacitor (SC) converters is presented, designed to accomplish the continuous variable conversion ratio and fast dynamical response to reject the external disturbance. A constant on time variable frequency one-cycle control technique (CVFOCC) for switched-capacitor (SC)
In this work, we present new electrical measurements that allow us to probe deeper into both time-dependent and fluid imprint effects that occur in Hf 0.5 Zr 0.5 O 2 -based
To note that capacitors are effective at lowering the impedance but up to a point where their impact will not be visible anymore due to the spreading inductance becoming dominant. PDN simulation using dynamic
Absrtact: In this paper, dynamic analysis of series capacitors in multi-machine systems in discussed by making linear work point. To achieve stability in such systems, the number of series capacitors in line is determined using fuzzy controller whenever any unwanted perturbation is createad in these systems. Here is show that the use of this
whether the analysis of RC or RL circuits is any different! Note: Some of the figures in this slide set are taken from (R. Decarlo and P.-M. Lin, Linear Circuit Analysis, 2nd Edition, 2001, Oxford UniversityPress) and (C.K. Alexanderand M.N.O Sadiku, Fundamentals of Electric Circuits, 4th Edition, 2008, McGraw Hill) 2 SM 3 Reading Material • Chapters 6 and 7 of the textbook –
In their previous work, the authors have studied the phasor dynamics of thyristor-controlled series capacitors (TCSCs), and derived associated models for studying power swing oscillations in power systems. This paper presents the use of a dynamic phasor model of the TCSC in studies of subsynchronous resonance (SSR). Their earlier dynamic phasor models of
This paper presents a comprehensive analysis and evaluation of dc-link capacitors in EV inverter systems to improve the power density. The analysis starts with ESR models of both
the dc-link capacitors, which is critical to predict capacitor lifetime. This paper focuses on analysisand evaluation of dc -link capacitors in EV inverter systems to improve the power density.
Additionally, dynamic analysis is conducted on soft carbon anode and full-cell, showing good compatibility between the bi-material cathode and anode. These findings enhance the understanding of the dynamics in bi-material cathodes and guide the development of high
Additionally, dynamic analysis is conducted on soft carbon anode and full-cell, showing good compatibility between the bi-material cathode and anode. These findings enhance the understanding of the dynamics in bi-material cathodes and guide the development of high-performance and safe lithium-ion battery capacitors.
The dynamic characteristics and optimization of a cutting mechanism about aluminum electrolytic capacitor casing machine were investigated with a lumped mass-spring damper model in this paper. In t...
This paper proposes a dynamic capacitor (D-CAP) based on the family of inverter-less active filters that is able to provide a dynamically controllable capacitance with active harmonic filtering integrated into the same unit. This new device is seen to be compact, and is likely to be cost competitive against simple switched shunt capacitors. It
Dynamic analysis of multilayer ceramic capacitor for vibration reduction of printed circuit board Kim, W.C.: Dynamic analysis of multilayer ceramic capacitor for vibration reduction of printed circuit board. J. Mech. Sci. Technol. 33(4), 1595–1601 (2019) Article Google Scholar Download references. Author information . Authors and Affiliations. Yonsei University,
Using shunt capacitor banks for power factor correction (PFC) is a very well established approach. However, there are cautions and difficulties associated with using capacitors. When sizing and
However, research on the operating mechanisms of bi-material cathode in lithium-ion battery capacitor is still in its infancy, particularly lacking in dynamic analysis. Distribution of relaxation times method allows for efficient analysis of dynamic characteristics by deconvolving electrochemical impedance spectroscopy. This study applies this method to lithium-ion battery
Two different control strategies for shunt capacitors including the local and neighboring schemes are applied to improve the voltage control in the system. First the dynamic simulation results
This paper proposes a dynamic capacitor (D-CAP) based on the family of inverter-less active filters that is able to provide a dynamically controllable capacitance with active harmonic
We study power harvesting using MEMS capacitors with single and dual air cavities that have been fabricated in our laboratory. Our goal is to achieve power harvesting from vibration sources with limited amplitude and with frequencies that are well below the resonance frequency of the fabricated device. The mathematical model includes the
Keywords: Printed circuit board vibration; Acoustic noise; Dynamic analysis; Multilayer ceramic capacitor (MLCC); Parametric study -----1. Introduction Capacitors are manufactured in various shape using differ-ent materials depending on the application. Among the vari-ous types of capacitors, ceramic capacitors have high volumet-
This article proposes a method to extract the half-bridge mosfet dynamic capacitances simply using a one-step measurement. By changing the terminal connection of the half-bridge mosfet, the dynamic capacitances were obtained through two-port S-parameter measurement. The proposed method was verified through simulation and experiment, and a
evaluation of dc-link capacitor applications to minimize the volume, mass and capacitance. operating temperature are derived and experimentally validated. The RMS values and frequency drive systems. The modeling and analysis also consider the self-heating process and resulting
Ripple current is one of the main considerations in sizing and selecting dc-link capacitors. between the active rectifier and the PWM inverter stages [27, 28]. The coordinating modulation DC-DC converters and inverter system applications . However, the implementation of stages in between [30, 31].
The dc-link capacitor is represented by an equivalent circuit including Rc, Lc and Cc, as shown in Fig. 8. The switching frequency is 20 kHz, and that the ESR of battery pack and interconnects can be neglected since the impedance of interconnects is dominated by the inductance component, shown as L1 in Fig. 8.
PERFORMANCE METRICS link capacitors: power loss, core temperature, capacitor life, and battery ripple current. multiplier Mf. The expression is shown in 20, where represents the ESR value corresponding to fi. coupled electrothermal method. Fig. 7 depicts the iterative solution process. The computation starts with a given ambient temperature Ta.
The dynamic capacitance characteristics of a mosfet are closely related to the switching behavior of the circuit and EMI generation. Therefore, for EMI analysis and to control power conversion systems, the capacitances of the mosfet s have to be accurately known. The capacitance of a mosfet changes depending on the dc bias voltage.
The K is a constant, which is typically assigned a value of 2 . . Therefore, the battery ripple current should be maintained under a certain limit to avoid the harmful effect. The dc-link capacitor is represented by an equivalent circuit including Rc, Lc and Cc, as shown in Fig. 8.
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