Sub-resonant capacitor
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A distributed photovoltaic energy optimization system based on a sub-module resonant switched-capacitor implementation Abstract: This work presents a sub-module power management system for large-scale photovoltaic systems. Individual `micro-converters'' configure across strings of PV cells at terminals normally connected to bypass diodes ...
A distributed photovoltaic energy optimization system based on a sub …
A distributed photovoltaic energy optimization system based on a sub-module resonant switched-capacitor implementation Abstract: This work presents a sub-module power management system for large-scale photovoltaic systems. Individual `micro-converters'' configure across strings of PV cells at terminals normally connected to bypass diodes ...
Dual-Phase Shifting Strategy for CLLC Resonant Converters
Mode 1 (t 1 –t 2): At time t 1, the primary side switch S 1 is turned on, and the primary side S 1 and S 3 remain on during this stage, and the primary side voltage of the resonant cavity is clamped at 0.The secondary switch tubes S 6 and S 7 remain on, the secondary voltage of the resonant cavity is clamped at -V o, the primary current of the …
Jason T. Stauth
Selected Publications. J.T. Stauth, "Pathways to mm-scale DC-DC converters: Trends, opportunities, and limitations," IEEE Custom Integrated Circuits Conference (CICC), 2018.C. Schaef and J.T. Stauth, …
A Resonant Switched-Capacitor IC and Embedded System for Sub …
Request PDF | A Resonant Switched-Capacitor IC and Embedded System for Sub-Module Photovoltaic Power Management | The viability of grid-connected photovoltaic (PV) energy has improved dramatically ...
A new quasi-resonant inverter with two-way short-circuit switch …
Two frequencies are often used in induction heating, that is, a lower frequency f/sub L/ is for preheating and a higher frequency f/sub H/ is for main heating in order to decrease thermal stress. In this case, each of f/sub H/ and f/sub L/ is generated by the different inverter, and f/sub H/ approximately equals several times to ten times of f/sub L/. The authors …
Resonant-Switched Capacitor Converters for Chip-Scale Power …
In this study, we explore the design and optimization of 2:1 step-down topologies, based on representative capacitor technologies, CMOS device parameters, and air-core inductor models. We compare the SC approach to the ReSC approach in terms …
A Resonant Switched-Capacitor IC and Embedded System for Sub …
A high-voltage CMOS IC and embedded system based on a resonant switched-capacitor converter that achieves effective conversion efficiency over 99% for a wide range of mismatch, insertion loss below 0.1%, a vertical footprint less than 6 mm, and weight less than 1 Oz is presented. The viability of grid-connected photovoltaic (PV) …
Study of Sub Synchronous Resonance on IEEE second …
[3] Naresh Babu .G, Sudhagar.V, "Damping of Sub Synchronous Resonance in an Series Compensated System Using PSCAD", Vol 3, Special issue 1, Febrauary 2014. [4] Dr. Daniel H. Baker, Dr. George E. Boukarim, and Robert D Aquila, Richard J. Piwko, "Sub Synchronous Resonance and Mitigation Methods for Series Capacitor Applications".
Increasing tolerable coupling coefficients range of series-series ...
Frequency control of series-series compensated inductive power transfer links (SS-IWPTL) operated in sub-resonant region while feeding variable voltage-type loads (e.g. batteries) with constant current under uncertain coupling conditions allows to minimize volt-ampere (VA) rating of transmitting-side converter.
Capacitor Solutions for Resonant Converter Applications
Resonant Capacitor：C0G Mid Voltage Series Appearance Line UP Automotive grade Based upon AEC-Q200 LW Size mm (inch) T.C. Capacitance Range (F) 3.9n 4.7n 5.6n 6.8n 8.2n 10n 15n 22n 33n
Sub-synchronous resonance in series compensated wind farm: A …
In electrical networks, the series capacitor compensation can cause a significantly adverse effect called the sub-synchronous resonance (SSR) in which …
Increasing tolerable coupling coefficients range of series-series ...
Abstract. Frequency control of series-series compensated inductive power transfer links (SS-IWPTL) operated in sub-resonant region while feeding variable …
(PDF) Dual Resonant RF Coil for 1.5T and 3T MRI Systems …
The higher value sub-leg capacitors, lower value sub-leg capacitors and end ring capacitors are shown by pink yellow and orange colors respectively. ... Dual resonant sub-leg RF coil (a) Copper etched FR4 FPCB (b) Prototype. V. MEASUREMENTS The designed RF coil was first tested to check the resonance frequencies on the Agilent network …
Sub-synchronous resonance in grid-forming PMSGs connected to …
The sub-synchronous resonance (SSR) characteristics and countermeasures of grid-forming permanent magnet synchronous generators (PMSGs) controlled by DC voltage synchronization control (DVSC) are investigated in this paper. First, small-signal models of two PMSGs connected to a series-compensated network are …
A Comprehensive Approach for Sub-Synchronous Resonance …
IEEE Sub-Synchronous Resonance Working Group report [4] presented the basic theory, problem definition, analytical tools, testing, and countermeasures for mitigating the SSR …
Resonant Switched-Capacitor Converters for Sub-module …
Resonant switched-capacitor converters are configured in parallel with strings of PV cells at the sub-module level to improve energy capture in the event of shading or mismatch. The converters operate in a parallel-ladder architecture, enforcing voltage ratios among strings of cells at terminals normally connected to bypass diodes.
Capacitor
In electrical engineering, a capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other. The capacitor was originally known as the condenser, [1] a term still encountered in a few compound names, such as the condenser microphone is a passive electronic …
Capacitor
In electrical engineering, a capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other. The capacitor was originally known as the …
Compact inductor-capacitor resonators at sub-gigahertz …
Compact inductor-capacitor (LC) resonators, in contrast to coplanar waveguide (CPW) resonators, have a simple lumped-element circuit representation but usually call for sophisticated finite-element method (FEM) simulations for an accurate modeling. Here we present a simple analytical model for a family of coplanar LC …
High-density power converters for sub-module photovoltaic …
This work presents an overview of distributed submodule power electronics based on resonant and switched-capacitor topologies configured in a ladder architecture. We present a new resonant switched-capacitor topology, termed a `direct conversion'' topology because current flow is always uni-directional in the inductor component. The direct …
Capacitor banks protection, cautions and maintenance tips
3. Failure of Capacitor Banks. Nowadays, modern capacitors use a "self-healing, safety disconnect" technology, in which the integrity of the capacitor dielectric is maintained very effectively. Under minor fault conditions, gases are released within the capacitor element to effectively weld and close any hole caused by the dielectric fault.
Increasing tolerable coupling coefficients range of series-series ...
Corresponding loci of compensating capacitor values is depicted in Fig. 10 for different ... Generalized sub-resonant control methodology allowing to increase the tolerance to coupling coefficient variation in series-series compensated inductive wireless power transfer links operating with constant output current under frequency constraints …
A Resonant Switched-Capacitor IC and Embedded …
Request PDF | A Resonant Switched-Capacitor IC and Embedded System for Sub-Module Photovoltaic Power Management | The viability of grid-connected photovoltaic (PV) energy has improved …
11.9 A Compact 12V-to-1V 91.8% Peak Efficiency Hybrid Resonant …
High power density, high efficiency, and high voltage conversion ratio (VCR) DC-DC converters are in great demand for portable devices and autonomous robots. The double-step-down (DSD) converter and its variants are promising solutions for their reduced voltage stress on the power transistors, extended duty-cycle (D), and higher equivalent switching …
A Resonant Switched-Capacitor IC and Embedded System for Sub …
This paper presents a high-voltage CMOS IC and embedded system based on a resonant switched-capacitor converter. The solution is integrated into the junction box to balance …
Resonant-Switched Capacitor Converters for Chip-Scale Power …
Resonant switched-capacitor (ReSC) converters show similar promise as they benefit from many of the same architectures and scaling trends, but also from ongoing improvements in mm-scale magnetic devices. In this study, we explore the design and optimization of 2:1 step-down topologies, based on representative capacitor …
High Efficiency Mechanism Analysis of Resonant Switched-Capacitor ...
The switched-capacitor (SC) converters are gaining popularity in some practical use. Its resonant counterpart, with a small inductor as current shaper in the architecture, has the advantage of smoother charging current, smaller voltage and current variation ratio and so on. This paper presents a generic and thorough analysis of the …
[2304.12744] Compact inductor-capacitor resonators at sub …
Compact inductor-capacitor (LC) resonators, in contrast to coplanar waveguide (CPW) resonators, have a simple lumped-element circuit representation but usually call for sophisticated finite-element method (FEM) simulations for an accurate modelling. Here we present an simple analytical model for a family of coplanar LC …
Brief Overview of Sub-Synchronous Resonance
Brief Overview of Sub-Synchronous Resonance Series capacitors have been applied for decades in power systems to increase transfer capability of long transmission lines. The …
Sub-synchronous resonance analysis in DFIG-based wind farms: …
This paper is part II of a two-paper series that reviews, analyzes, and explores mitigation methods for sub-synchronous resonance (SSR) in series compensated doubly-fed induction generator (DFIG) based wind farms. The paper studies three different possibilities for the addition of controllers that perform SSR damping to eliminate induction generator …
Characteristics of sub-synchronous oscillation in grid-connected …
The interaction of the converter control and series compensation capacitance is the fundamental reason for this emerging sub-synchronous oscillation (SSO) phenomenon. It originates from the rising of the series complementary degree in the series complementary line, and the inductor-capacitor (L-C) oscillation of the grid is the …