low voltage dc system with storage and distributed generation interfaced systems
báo cáo hóa học:" Research Article Note on the Persistent Property of a Discrete Lotka-Volterra Competitive System with Delays and Feedback Controls" pptx
... competitive system with delays and feedback controls Recently, in Liao et al considered the following general nonautonomous discrete Lotka-Volterra competitive system with delays and feedback ... Lotka-Volterra systems, ” Proceedings of the American Mathematical Society, vol 123, no 1, pp 87–96, 1995 Z D Teng, “Permanence and extinction in nonautonomous Lotka-Volterra competitive systems with delays,” ... X Liao, Z Ouyang, and S Zhou, “Permanence of species in nonautonomous discrete LotkaVolterra competitive system with delays and feedback controls,” Journal of Computational and Applied Mathematics,...
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Báo cáo hóa học: " Research Article A Framework for System-Level Modeling and Simulation of Embedded Systems Architectures" ppt
... Rabaey, and A SangiovanniVincentelli, System- level design: orthogonalization of concerns and platform-based design,” IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, ... Prasanna, and A Ledeczi, “Milan: a model based integrated simulation framework for design of embedded systems, ” in Proceedings of the Workshop on Languages, Compilers, and Tools for Embedded Systems ... [11] C Erbas and A D Pimentel, “Utilizing synthesis methods in accurate system- level exploration of heterogeneous embedded systems, ” in Proceedings of IEEE Workshop on Signal Processing Systems (SIPS...
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Tài liệu tiếng anh Điện tử công suất mạch MERS A new AC current switch called MERS with low on state voltage IGBTs for renewable energy and power saving applications
... scale system have been estimated and also included in the figure By increasing the dc- link voltage, and as a result the no-load voltage of the generator, the efficiency can be improved High voltage ... connected to the dc capacitor Picture of PM-generator and MERS used in experimental system voltage level for grid side inverter with 1700 V IGBTs In case number 3, the dc- link voltage was further ... current changes polarity with zero voltage naturally, and the current is shut down immediately with zero voltage Therefore, every switching is performed under zero voltage and/ or zero current condition...
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Báo cáo hóa học: " Research Article On Sum Rate and Power Consumption of Multi-User Distributed Antenna System with Circular " pdf
... ∞ to the cdf of a random variable with expectation and all moments bounded, and for all n, edf of Gn,: converges as K → ∞ to the cdf of a random variable with expectation and all moments bounded, ... distances, shadowing, and small-scale fading between antennas and users which are random variables Hence, it is random and difficult to evaluate To assess the cost of the system, we introduce a ... performance comparison between systems with and without coordination, since coordination does not impact L However, this fixed L does not apply to performance comparison between CAS and DAS, since it cannot...
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High efficiency and digitally controlled AC DC converter with power factor correction and fast output voltage regulation
... results at 230VAC and 0.4p.u load with sample correction and with CCM-DCM control 141 3.49 Experimental results at 230VAC and 0.1p.u load without sample correction and with CCM control ... 230VAC, full load with sample correction and with CCM-DCM control 140 3.47 Experimental results at 230VAC and 0.4p.u load without sample correction and with CCM control ... waveform The DC flux density BDC (t) and the DC magnetizing field intensity HDC (t) are given by BDC (t) = HDC (t) = NIL (t) Ac R NIL (t) lm (2.10) (2.11) The AC flux density ∆B(t) and the AC magnetizing...
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Tài liệu tiếng anh Điện tử công suất mạch MERS Loss and rating consideration of a wind energy conversion system with reactive compensation by magnetic energy recovery switch
... scale system The losses and ratings of a large scale electrical conversion system with MERS solution and with a 2-level active rectifier solution have been investigated The design of the two systems ... additions to the generator dimensions and costs Several solutions exists, with the combination of a diode bridge and a dc- dc chopper representing a low cost and high efficient solution However, ... switches and a small dc- capacitor With simple control and low switching losses, the size of the capacitive injected voltage can be controlled Experiments on a 50 kW machine demonstrates and verifies...
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Navigating the Windows 2000 File System with “Windows Explorer” and “My Computer”
... Locate the “Documents and Settings” folder and double-click on it This will display the contents of the Documents and Settings folder Within this folder, locate the Administrative and All User folder ... “Documents and Settings” folder and click on the (+) sign next to this folder This will display the contents of the folder Now click directly on the folder itself and the contents of the Documents and ... navigated to the “Administrative and All User” folder using Windows Explorer Close the Windows Explorer Window - IT Essentials II v2.0 - Lab 8.2.4 Copyright 2002, Cisco Systems, Inc Step 2: Navigating...
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Tài liệu Ecodial V3.38 Low-voltage electrical installation design software Fupact and variable speed drive ppt
... mm2 for F and G installation methods Now Ecodial calculates and optimises all CSA if the local installation standard allows it v The maximum voltage drop authorised by the IEC60364 standard is ... complies with the latest electrical standards, bringing LV installation design software to a new level of performance With Ecodial V3.38, design low the easy way Personalise your project New standards ... b voltage drops, earth-fault protection Different simulations can be carried out at this stage to optimise the design Ecodial V3.38 continuously checks the calculations and compliance with standards...
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Tài liệu Building a Better Hospital with Low-Voltage Convergence pdf
... every location and a variety of different voice mail systems CASE STUDY The strategy for the new Children’s Hospital was to have a single cabling infrastructure for all low voltage systems, including ... equipment and 12 strands of 50-micron multimode fiber to support legacy equipment, totaling nearly 3,000 strands of fiber In the main cross-connect and data center, ADC’s FiberGuide® Management System ... effectively without losing signal Over million feet of TrueNet Category 5e provides over 20,000 connections to support all the low- voltage systems throughout the facility, including network and Internet...
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iec 60439-1 low-voltage switchgear and controlgear assemblies - type-tested and partially ty
... assemblies (PTTA) of low- voltage switchgear and controlgear IEC 60947-1:1988, Low- voltage switchgear and controlgear Part 1: General rules IEC 60947-4-1:1990, Low- voltage switchgear and controlgear ... 13 LOW- VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES Part 1: Type-tested and partially type-tested assemblies General 1.1 Scope and object This International Standard applies to low- voltage ... contact with cable covering 165 Table G.1 Correspondence between the nominal voltage of the supply system and the equipment rated impulse withstand voltage, in the case of overvoltage...
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iec 60439-2 low-voltage switchgear and controlgear assemblies - particular requirements for busba
... trunking systems (busways) General 1.1 Scope and object Add the following paragraphs: This International Standard applies to busbar trunking systems (BTS) and their accessories for feeding and distributing ... supply track systems in accordance with IEC 60570 The busbar trunking systems considered in this standard are type-tested ASSEMBLIES (TTA) when tested in accordance with clause of this standard; variations ... the highest rated insulation voltage of any parts of the system stated by the manufacturer NOTE A double insulation system between low- voltage circuits and extra -low- voltage communication circuits...
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iec 60439-3 low-voltage switchgear and controlgear assemblies - particular requirements for iow-v
... leur utilisation Tableaux de rộpartition Low- voltage switchgear and controlgear assemblies Part 3: Particular requirements for low- voltage switchgear and controlgear assemblies intended to be ... Handling Services 60439-3 O IEC:1990+A1:1993 -5- +A2:2001 INTERNATIONAL ELECTROTECHNICAL COMMISSION LOW- VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES Part 3: Particular requirements for low- voltage ... International Standards transparently to the maximum extent possible in their national and regional standards Any divergence between the IEC Standard and the corresponding national or regional standard...
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iec 60439-4 low-voltage switchgear and controlgear assemblies - particular requirements for assem
... ASSEMBLY shall consist of an incoming unit and may include a low voltage/ extra -low voltage (LV/ELV) transformer unit and, possibly, one or more low voltage /low voltage (LV/LV) transformer units 9.4.2 ... primary voltage and the nominal secondary voltage must be within the limits specified in IEC 60439-1 for this standard to be applicable Definitions The definitions of Part apply with the following ... types: a) either with rated operational voltages not less than the nominal supply voltages and rated frequencies in accordance with the national regulations; b) or lower operational voltages or frequencies...
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iec 60439-5 low-voltage switchgear and controlgear assemblies - particular requirements for assem
... withstand 8.2.9.1.1 shock load withstand 8.2.9.1.2 torsional stress withstand 8.2.9.1.3 Torsion withstand - type test 12.2 impact strength 8.2.9.2 Verification of: 12.2.1 impact force withstand ... extremities The CDC is rigidly fixed at its base and the frame closely fitted over it, so that the end locations of the frame arm are in contact with the roof and walls of the CDC The CDC, with the door(s) ... International Standards transparently to the maximum extent possible in their national and regional standards Any divergence between the I EC Standard and the corresponding national or regional standard...
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Power converter control circuits for two mass vibratory conveying system with electromagnetic drive simulations and experimental results IEEE trans
... described as , and , and are the initial positions of osas in Fig Variables and cillating masses In order to achieve a dynamic model of this system, the whole system is divided in two subsystems, ... actual and reference current is qualified by hysteresis width Satisfactory modulation frequency for those mechanical systems is within the range 2-5 kHz, due to inertness of mechanical systems and ... synchronized with the moment of mains voltage zero-cross and phase shifted for angle and Simulation results for phase angles are shown in Fig 9(a) and (b), respectively Characteristic ´ ´ DESPOTOVIC AND...
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Direct torque and indirect flux control of brushless DC motor with non sinusoidal back EMF without position sensor
... obtained from the measured stator voltages Vsα and Vsβ and currents i sα and isβ , then by using (1) and (4) qand d-axis flux linkage are drived Also, by usig (4) qand d-axis current are calculated ... obtained and the estimated torque tracks the reference torque closely The high frequency ripples observed in the torque and current can be minimized by properly selecting the dc- link voltage and torque ... brushless dc drives with reduced torque ripple,” IEEE Trans Ind Appl., vol 41, no 2, pp 599–608, Mar./Apr 2005 [5] S B Ozturk and H A Toliyat, “Direct torque control of brushless dc motor with non-sinusoidal...
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Reproductive System Structure, Development and Function in Cephalopods with a New General Scale for Maturity Stages pot
... Reproductive System Cephalopods are short-cyclic and monocyclic (with the exception of Nautilus) animals with a structu- rally complex reproductive system In general, the system in males and females ... processes take place in male and female reproductive systems These include appearance, differentiation and growth of gonad and accessory glands At this time oogenesis and spermatogenesis take place ... pedal and hypobranchial glands in different species of this class In mollusks which lay their eggs in rigid capsules, capsule glands and albumin glands are present in a complex of pallial glands...
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IEC 60947 6 2 low voltage switchgear and controlgear multiple function equipment control and
... impulse withstand voltage (U imp ) Indication of the open and closed positions (see 8.1.4 and 8.1.5) k) Pollution degree (see 7.1.3.2) Rated control circuit voltage (U c ), nature of current and ... to 6.1.1 and 6.1.2 above: – Data a and b and relevant operational data under d, e, and f – Data a and b shall be marked on the CPS and preferably on the nameplate if any – Data under c and n shall ... with the following addition: 8.1.7.4 Terminal identification and marking Subclause 7.1.7.4 of Part applies with additional requirements as given in annex C with the following addition: Line and...
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báo cáo hóa học:" Effects of low intensity pulsed ultrasound with and without increased cortical porosity on structural bone allograft incorporation" doc
... apposed with 2-0 nylon and a soft-padded bandage placed for 5–7 days Lateral radiographs were taken postoperatively and at four months following euthanasia Transdermal fentanyl patches (150 µg/hr) and ... (75%–100%), and cleared with xylene The specimens were then processed using standard paraffin histology techniques Two, µm sections were cut from the specimen block and stained with Hematoxylin and Eosin ... asdefect with middle,5andcaudal fluorescentwellproximal (right) to evaluate MAR fortheaveragesand evalmineral appositioncm of(MAR) in the LIPUS and/ orto 10 cortices asgraft, as stabilized with aplane...
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