three phase induction generators

Design and Implementation of a Three-Phase Induction Motor Control Scheme

Ngày tải lên : 27/10/2013, 23:15

... “Insight”) work 2.2 Induction Motor Theory and Practice Wildi [1] is an excellent source of information on the theory behind the operation of an induction motor The three- phase induction machine ... supply for the motor controller that will be used for this thesis • Induction motor Three- phase, 0.5kW, 4-pole machine This induction motor is only used for the prototype design presented in this ... the thesis project 1.1 Project Specification To design a control scheme for a three- phase induction motor drive This induction motor drive is proposed to be incorporated into a “hybrid car” or...

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Vector control of three phase AC machines - N.P.Quang

Ngày tải lên : 18/12/2013, 09:10

... 3 -phase AC motor with three phase windings u, v and w The three phase voltages are applied by three pairs of semiconductor switches vu+/vu-, vv+/vv- and vw+/vw- with amplitude, frequency and phase ... structures for systems using three- phase AC machines Formation of the space vectors and its vector orientated philosophy Basic structures with field-orientated control for three- phase AC drives Basic ... control structures for systems using three- phase AC machines From the principles of electrical engineering it is known that the 3 -phase quantities of the 3 -phase AC machines can be summarized...

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Matlab simulink model three phase voltage source inverter

Ngày tải lên : 24/12/2013, 11:32

... 1,3,5 0 2,4,6 Table Phase voltage space vectors State Phase voltage space vectors 12/ 3) Vdc / (101) Figure Phase voltage space vectors -(2/3) VdC '(100) Real (001) Table Phase voltage values ... vector is a simultaneous representation of all the three- phase quantities It is a complex variable and is function of time in contrast to the phasors Phase- to-neutral voltages of a star-connected ... , 4.3 Three- phase Inverter Block , < The inverter model is build using 'function' blocks k V V V V , V8 V7 V2 according to the expression (4) Thus the output of the inverter block is the phase...

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A fuzzy logic CC PWM three phase AC DC converter

Ngày tải lên : 03/01/2014, 19:44

... Current Regulator for Three- phase Power Converters”, IEEE Trans on Power Electronics, vol 13, NO 3, May 1998 pp419-426 M.-T Tsai, W I Tsai: “Analysis and design of Three- phase AC-to-DC Converters ... Applications, vol 31, NO 2, MarcWApril 1995 pp 287-292 H Komurcugil, Kukrer: “Lyapunov-based control for Three- phase PWM ACDC Voltage-Source Converters”, IEEE Trans on Power Electronics, vol 13 No 5, September ... vol 46, No 3, June 1999, pp 594-603 H Komurcugil, Kukrer: “A Novel Current-Control Method for Three- phase PWM ACDC Voltage-Source Converters”, IEEE Trans on Ind Electronics, vol 46, No 3, June...

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A three phase voltage type PWM rectifier with the function of an active power filter

Ngày tải lên : 03/01/2014, 19:44

... signal forphase v which is given by (11) can also be obtained in the same manner as that explained above for phase U EXPERIMENTAL INVESTIGATION To confirm the operation of the three- phase PWM ... active filtering operation, the P W M rectifier is 387 i,, PWM signals SI,, S, and S , for phase U, phase v and phase w , respectively, are generated as follows: are obtained, which are given by To ... power systems, the three- phase voltage-type P W M rectifier having the function of an active power filterhas been investigated and its effectiveness has been confirmed using a thee -phase diode bridge...

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Current control techniques for three phase voltage source PWM converters a survey

Ngày tải lên : 03/01/2014, 19:45

... TECHNIQUES FOR THREE- PHASE VS-PWM CONVERTERS While phase voltages can be controlled independently, phase currents are determined not only by their own phase voltage, but also by those of other phases ... midpoint (when available) phase load are not connected [Fig 2(a)], phase currents depend only on the voltage difference between phases Therefore, a common term can be added to the phase voltages, thus ... the system with three independent controllers The comparator state change in one phase inﬂuences the voltage applied to the load in two other phases (coupling) However, if all three current errors...

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Tài liệu ime Control of a Three Phase 4 Wire PWM Inverter with Variable DC Link Voltage and Battery Storage for PV Application doc

Ngày tải lên : 19/01/2014, 02:20

... "Dead Beat Control of threePhase PWM Inverter", IEEE Transactions on Power Electronics, Vol 5, No 1, January 1990, pp 21-28 [3] Osman Kükrer, "Deadbeat Control of a Three- Phase Inverter with an ... voltage References [1] Takao Kawabata, Takeshi Miyashita and Yushin Yamamoto, "Digital Control of three- Phase Inverter with LC Filter", IEEE Transactions on Power Electronics, Vol 6, No 1, January ... [4], [6 and [8] an 6] nd for three pha inverters in [1], [2], [3], [5] and [7], the dead beat contro in [1] and [2] is adopte ase s d ol ed and extended to mach fo three phas wire VS The contr...

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Chapter 9 unbalanced operation and single phase induction machines

Ngày tải lên : 16/02/2014, 18:48

... phase for the three- phase induction machine can, with minor modiﬁcations, be used to analyze the operating modes of single -phase machines We will follow closely to the development for three- phase ... windings of a twophase induction machine to be out of phase To accomplish this the impedances of the stator windings are made unequal For example, the split -phase machine is a two -phase induction motor ... open-circuited stator phase, which is equivalent to single -phase operation, let us consider the stator circuits of a threephase, wye-connected induction machine as shown in Figure 9.5-3, where phase a is...

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Chapter 12 fully controlled three phase bridge converters

Ngày tải lên : 16/02/2014, 18:53

... v0s is zero for a balanced three- phase induction motor Show that v0s is zero for a balanced three- phase synchronous machine Show that v0s is zero for a balanced three- phase permanent magnet ac ... operation is the simplest strategy for controlling the three- phase bridge topology so as to synthesize a three- phase ac voltage source from a single -phase dc voltage source By varying ωc, variable frequency ... drop vd If the upper switch is on and the phase current is zero, it seems Figure 12.2-2 One phase leg THE THREE- PHASE BRIDGE CONVERTER 463 Figure 12.2-3 Phase leg equivalent circuits (a) Upper...

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Conventional Three-Phase Fixed-Bed Technologies: Analysis and Critique docx

Ngày tải lên : 16/03/2014, 22:20

... rV =rtrue Viscosity of the gas phase, NÁs/m2 Viscosity of the liquid phase, NÁs/m2 Molar mass of gas, kg/mol Density of the gas phase, kg/m3 Density of the liquid phase, kg/m3 Feed time in unsteady-state ... by compressor The two -phase gas–liquid mixture passes heat recuperator 8, where it is heated by the hot ﬂux leaving the reactor The ﬁnish L B Datsevich, Conventional Three- Phase Fixed-Bed Technologies, ... Concentration of a gas compound on the external catalyst surface (in the liquid phase) , mol/m3 Molar heat capacity of the gas phase for constant pressure, J/(mol K) xi xii CP,l CV,g dcat dHE dtube DA,l...

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Báo cáo "Determining thermal expansion coefficients of three-phase fiber composite material reinforced by spherical particles " potx

Ngày tải lên : 28/03/2014, 13:20

... fibre, three- phase composite is more heatproof than two - phase composite Calculated results of this material also indicate that when increasing volume fraction of glass particle phase, three- phase ... coefficients of three- phase composite material more than that of two - phase composite material in [7] So, embedding spherical inclusions into continous matrix phase of two - phase fiber composite ... expansion coefficients of three- phase composite material reduce Conclusions Based on the idea solving the problem of three- phase composite material through problems of known two - phase composite material,...

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Báo cáo " Three-phase polyme nanocomposite material " doc

Ngày tải lên : 28/03/2014, 13:20

... calculated result for three- phase composite, considering the interaction between nano seeds and the supposed matrix) Fig Calculated result for Moduli K of the two-phases and three- phases composite ... 60oC [8,9] The model of the three- phase composite in this paper, therefore, include: polyme matrix, reinforced pad seeds and nano seeds (Fig 1) Fig Model of the three- phase composite We approach ... From this supposition, the three- phase composite problem will be solved according to two -phase model with algorithm as follows: at first, the constants of the two -phase composite material which...

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Three phase a c circuits

Ngày tải lên : 03/04/2014, 20:52

... stator of a three- phase machine is utilised A single phase alternator utilises only two thirds of the stator slots A three- phase alternator has a better distribution factor A threephase, four-wire ... 3.3 In this figure, the three phase windings are shown connected, each one to its own separate load This arrangement is known as a threephase, six-wire system However, three- phase alternators are ... greater than that from a single -phase machine A three- phase supply produces a rotating magnetic field; whereas a single -phase supply produces only a pulsating field Three- phase motors are inherently...

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IEC 60909 3 short circuit currents in three phase a c systems currents during two separate sim

Ngày tải lên : 04/04/2014, 11:58

... conducteurs de phase ì ì 240/40 mm ACSR cõble de garde ì 240/40 mm ACSR impộdance directe linộique par phase Z (1)L = (0,06 + j 0,298) /km impộdance homopolaire linộique par phase rộsistivitộ ... 60909-3 IEC:2003 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SHORT-CIRCUIT CURRENTS IN THREE- PHASE AC SYSTEMS Part 3: Currents during two separate simultaneous line-to-earth short circuits ... the Document Policy Group at 303-397-2295 60909-3 IEC:2003 11 SHORT-CIRCUIT CURRENTS IN THREE- PHASE AC SYSTEMS Part 3: Currents during two separate simultaneous line-to-earth short circuits...

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Neutral current compensation in three phase, four wire systems a review

Ngày tải lên : 11/05/2014, 22:06

... transformers required to build (single -phase two-winding) (three- phase two-winding) (single -phase three- winding and single -phase two-winding) (single -phase three- winding) Vl V √l Vl V √l : √ : ... suppressor in three- phase four-wire systems, IEEE Trans Ind Electron 54 (2007) 2201–2208 [34] H.-L Jou, K.-D Wu, J.-C Wu, W.-J Chiang, A threephase, four-wire power ﬁlter comprising a three- phase three- wire ... by using three single -phase isolation transformers Considering the structural advantage of this topology, the control can be done either as a three- phase unit or three separate single -phase units...

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FPGA BASED SVPWM CONTROLLER FOR THREE PHASE AC AC MATRIX CONVERTER

Ngày tải lên : 14/05/2014, 22:37

... Electronics Association [4] Lászó Huber and Dusan Borojevic, “Space vector modulated three- phase to three- phase matrix converter with input power factor correction” IEEE Transactions On Industrial ... KimB.Larsen, Allan Holm Jorgensen, StigMunkNielsen, “Evaluation of Modulation Schemes for Three- Phase to Three- Phase Matrix Converters” IEEE Transactions On Industrial Electronics, Vol.51, No.1, February ... Member, IEEE, and Frede Blaabjerg,Fellow, IEEE, “Evolution Of Modulation Schemes For Three- Phase To ThreePhase Matrix Converters” IEEE Transactions On Industrial Electronics, Vol.51, No 1, February...

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vector analysis of a three-phase stator

Ngày tải lên : 26/10/2014, 14:40

... properties [10] Equivalent Circuits of a Three- Phase Stator A cross section of the stator windings of a two-pole, three- phase machine is shown in Fig The phase windings are shown to be displaced ... utilized Magnetic and Electric Vectors of a Three- Phase Stator The application of the above technique to the threephase, two-pole stator shown in Fig 1, whose phase windings are displaced from each ... Quantities of Two-Pole, Three- Phase Stator Shown on Magnetic Axes of the Windings Conclusion The development of equivalent magnetic and electric circuits for a phase winding of a threephase stator produced...

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