pss for synchronous generator

... Transforming the entire forest to n-ary form is intractable, however, because the number of hyperedges would be exponential in n Instead, we include only the top k n-ary backtraces for each forest ... to an n-ary forest baseline by reducing search errors during forest rescoring model reranking has also been established, both for synchronous binarization (Zhang et al., 2006) and for target-only ... (SSST) Asynchronous binarization in two-stage decoding allows us to select an appropriate grammar transformation for each language The source transformation can optimize specifically for the parsing...

Ngày tải lên: 20/02/2014, 09:20

... as input to the (syn)tactical component of the generator, where they are grammatically encoded (lexicalized and given syntactic form) without any form of coordinative ellipsis The resulting non-elliptical ... options for coordinative ellipsis ELLEIPO’s functioning is based on the assumption that coordinative ellipsis does not result from the application of declarative grammar rules for clause formation ... domains for elision options, as follows: • Testing for forward ellipsis: Gapping (including LDG), FCR, or SGF This involves inspecting (recursively for every S-node) the set of immediate constituents...

Ngày tải lên: 22/02/2014, 02:20

... expressive as synchronous tree substitution grammars (STSG) We refer to Chiang (2006) for an introduction to synchronous devices Let us recall the formal definition An extended tree transducer (for short: ... al (2009) for a more detailed exposition to XTT Synchronous tree-adjoining grammar XTT are a simple, natural model for tree transformations, however they are not suitably expressive for all applications ... model for statistical machine translation In Proc ACL, pages 263–270 Association for Computational Linguistics David Chiang 2006 An introduction to synchronous grammars In Proc ACL Association for...

Ngày tải lên: 17/03/2014, 00:20

... years for lead acid batteries) [11] are feasible today PM synchronous generators or motors are ideal for uses at rotational speeds preferably around 40 krpm, for the to 300 kW range and less for ... besides synchronous generators with electromagnetic excitation, permanent magnet (PM) synchronous as well as cage-rotor induction generators and DFIGs, all with power electronics control for variable ... conventional synchronous machines working as motors have been in place for a few decades DFIG, however, provides the optimum speed for pumping, which, for most hydroturbines, is different than that for...

Ngày tải lên: 21/03/2014, 12:12

... so characteristic for synchronous and IGs (machines) 2.2 Synchronous Generators Synchronous generators (classifications are presented in Figure 2.1) are characterized by an uniformly slotted stator ... pole DC excited rotor synchronous generators are manufactured for 2p1 = 2, poles high-speed turbogenerators that are driven by gas or steam turbines For lower-speed synchronous generators with a ... subsynchronous (n < f1/p) motor or as a supersynchronous (n > f1/p) generator The WRIG with bidirectional PWM converter may work as a motor and generator for both subsynchronous and supersynchronous...

Ngày tải lên: 21/03/2014, 12:12

... aerodynamic forces are reduced As expected, the servodrive — for pitch control — to change β has to be designed for a higher rating rather than for an active stall 3.9.3 Wind Turbine Models for Control ... A higher-order model may be adopted both for the actuator [11, 12] and for the engine [13] to better simulate in detail the diesel-engine performance for transients and control 3.7 Stirling Engines ... electric generator are shown in Figure 3.28 [14] for three working fluids at various speeds As the power and speed go up, the power density decreases Methane may be a good replacement for air for better...

Ngày tải lên: 21/03/2014, 12:12

... and Equation 4.70 for the generator association of signs, δV > for generating (Iq > 0) and δV < for motoring (Iq < 0) For large SGs, even the stator resistance may be neglected for more clarity ... Francis Group, LLC 4-14 Synchronous Generators jq E G I Iq I G IF d Id M M I I FIGURE 4.14 Generator and motor operation modes ( ) > generator, < motor (4.40) ( ) 0( generator / motor ) (4.41) ... were used for graphical computation of performance, nowadays they are used only to illustrate performance and derive equations for a pertinent computer program to calculate the same performance...

Ngày tải lên: 21/03/2014, 12:12

... Group, LLC (5.35) (5.36) (5.37) 5-10 Synchronous Generators ωr Id Vd ID ωr If Iq Vq Vf IQ FIGURE 5.3 The d–q model of synchronous generators In a similar way for the rotor, ( ) Ψ rf = Lrfl + L ... Taylor & Francis Group, LLC 5-27 Synchronous Generators: Modeling for (and) Transients This limitation justifies the search for a more general model that is valid for the whole range of the active ... © 2006 by Taylor & Francis Group, LLC 5-30 Synchronous Generators TABLE 5.1 Typical Synchronous Generator Parameter Values Parameter Two-Pole Turbogenerator ld (P.U.) lq (P.U.) ld′ (P.U.) ld″...

Ngày tải lên: 21/03/2014, 12:12

... Vr QL = Qr ⎛ V ⎛ ⎝ Vr ⎝ Vr V 2 6-16 Synchronous Generators 3~ Step-up full power transformer Step-down transformer Turbine Auxiliary services Synchronous generator If + Vf Ig Vg − Exciter AVR ... Recommended Practice for Excitation System Models for Power Systems.” © 2006 by Taylor & Francis Group, LLC 6-20 Synchronous Generators Switch Exciter transformer Field forcing rectifier Excitation ... of one synchronous generator in a two -synchronous- generator isolated power system central regulator (Figure 6.13a) The interconnected power system in Figure 6.13 is in equilibrium if, for each...

Ngày tải lên: 21/03/2014, 12:12

... seconds For hydrogenerators, © 2006 by Taylor & Francis Group, LLC (7.14) 7-12 Synchronous Generators Δnmax < 0.3 − 0.4 nn (7.15) TGV for hydrogenerators is in the order of to sec For turbogenerators, ... integer q is typical for turbogenerators (2p1 = 2, 4): q > (4 to 6) For low-speed generators, q may be as low as three but not less For q < 3, and for large power hydrogenerators, a fractionary q ... LLC 7-8 Synchronous Generators • 3000 for base-load SGs • 10,000 for peak-load SGs or other frequently cycled units [1] 7.2.4.8 Starting and Operation as a Motor Combustion turbines generator...

Ngày tải lên: 21/03/2014, 12:12

... 8-2 Synchronous Generators Testing of synchronous generators (SGs) is performed to obtain the steady-state performance characteristics and the circuit parameters for dynamic (transients) ... tests for synchronous machines New procedures start as research tests Some of them end up later as standard tests Standstill frequency response (SSFR) testing of synchronous generators for parameter ... A4–A5: Tests for Short-Circuited Field Turns and Polarity Test for Field Insulation The purpose of these tests is to check for field-coil short-circuited turns, for number of turns/coil, or for short-circuit...

Ngày tải lên: 21/03/2014, 12:12

... 4-1 Synchronous Generators: Modeling for (and) Transients .5-1 Control of Synchronous Generators in Power Systems 6-1 Design of Synchronous Generators 7-1 Testing of Synchronous ... Handbook Tom Short Synchronous Generators Ion Boldea Variable Speed Generators Ion Boldea © 2006 by Taylor & Francis Group, LLC The Electric Generators Handbook SYNCHRONOUS GENERATORS ION BOLDEA ... recently for NASA mission generators with 50,000 h or more fail-proof operation; they are also pursued aggressively as electric generators for series (full electric propulsion) vehicles for powers...

Ngày tải lên: 21/03/2014, 12:12

... in the decoder For these reasons, the parsing problems for more realistic synchronous CFGs such as in Chiang (2005) and Galley et al (2006) are formally equivalent to ITG Therefore, we believe ... Table 1: Speed and BLEU scores for two-pass decoding UNI stands for the uniform (zero) outside estimate BO stands for the bigram outside cost estimate BB stands for the best border estimate, which ... higherorder outside n-gram information for a state of X[i, j, u1, ,n−1 , v1, ,n−1 ] into account We call this the best-border estimate For example, the bestborder estimate for trigram states is: hBB...

Ngày tải lên: 23/03/2014, 17:20

... uses the Synchronous Event Demultiplexer to wait for events to occur on these Handles For instance, the TCP protocol layer uses the select synchronous event demultiplexing operation to wait for client ... Dispatcher, which uses a Synchronous Event Demultiplexer to wait for events to occur When events occur, the Synchronous Event Demultiplexer notifies the Initiation Dispatcher, which synchronously calls ... should not perform blocking I/O on an individual Handle since this will block the entire process and impede the responsiveness for clients connected to other Handles Therefore, for long-duration...

Ngày tải lên: 30/03/2014, 16:20

... is not turned on for a long period, the performance of its electrolytic capacitors will be reduced • If it is stopped for a prolonged period, turn the drive on every two years for at least hours ... components of the transformer(s) (Figure 2) for installation later, and use a hoist to remove the transformer(s) (Figure 3) Remove the fixing screws (Figure 3) from the transformer(s) WARNING RISK ... the transformer has been installed, the degree of protection of the top the drive is IP31 Location of transformers: ATV71 HC11Y to HC16Y: One transformer ATV71 HC20Y to HC31Y: One transformer ATV71...

Ngày tải lên: 28/06/2014, 16:20

... greater than V (510 Ω for 12 V, 910 Ω for 15 V, 1.3 kΩ for 24 V) State if < 1.2 V, state if > 3.5 V +24 V c (max 30 V) Max current 20 mA for internal power supply and 200 mA for external power supply ... EMC plate for connecting the power cables - EMC plate for connecting the control cables (for ATV71H 037M3 to D15M3X, ATV71H 075N4 to D18N4 and ATV71H U15S6X to U75S6X only) - EMC plate for connecting ... is not turned on for a long period, the performance of its electrolytic capacitors will be reduced • If it is stopped for a prolonged period, turn the drive on every two years for at least hours...

Ngày tải lên: 28/06/2014, 16:20

... phát thường thiết kế có máy phát đồng trục làm việc với cụm diesel – generator (DG) Hệ thống máy phát đồng trục (SG – Shaft Generator) có nhiều phương án kĩ thuật thoả mãn yêu cầu vận hành, khai ... dị rotor dây quấn làm việc chế độ máy phát cấp nguồn từ hai phía (DFIG: Doubly – Fed Induction Generator) DFIG làm máy phát đồng trục có ưu điểm bật stator DFIG nối trực tiếp với lưới điện, rotor...

Ngày tải lên: 25/07/2015, 07:26

... Manual for Induction Motors and Generators Bearing type for D-end Bearing type for ND-end Oil change interval Viscosity class Oil quantity for D-end bearing (for self lubricated) Oil quantity for ... Manual for Induction Motors and Generators 3BFP 000 050 R0101 REV C Safety Instruction - Manual for Induction Motors and Generators Chapter - Introduction 1.1 1.2 1.3 1.4 1.5 General information ... Manual for Induction Motors and Generators Maintenance and servicing Permanent magnet synchronous machines must only be serviced by repair shops qualified and authorised by ABB For more information...

Ngày tải lên: 26/01/2014, 09:20

... used pnull = 10−10 for this value in the experiments we report below 784 either φPi for phrase pairs or φnull for single lanz guage phrases We choose Dirichlet process (DP) priors for these parameters: ... allows us to perform inference for the model described in 4.1 without restricting the infinite space of possible translation rules To this we need a method for sampling a derivation for a given sentence ... cluster (see Section 4.4) and thus is very costly Therefore for small corpora we re-sample the hyperparameter after every pass through the corpus, for larger experiments we only re-sample every 20...

Ngày tải lên: 20/02/2014, 07:20

... obtain more variation in the generator output) On average for = the generation time for an individual dialogue act is almost + of a second For < 10 it is of a second The generator uses a repository ... information which is exchanged but also to many other properties of the interlocutors, such as their emotional state, gender, cultural background, etc The generator should therefore allow for ... need a generator which can cope with (linguistic) resources that contain an arbritary combination of grammar rules, templates and canned text REQUIREMENT 2: The generator should allow for combinations...

Ngày tải lên: 22/02/2014, 02:20