circuit schematic diagram three phase ac motor speed control
Design and Implementation of a Three-Phase Induction Motor Control Scheme
... detect the outputs of an induction motor, we can use this motor controller to control an induction machine. ã TMS320F243 DSP controller. This is manufactured by the Texas Instruments Company ... battery packs, 12V DC to 140V DC . ~40 V DC is the most compatible voltage supply for the motor controller that will be used for this thesis. ã Induction motor. Three- phase, 0.5kW, 4-pole machine. ... nominal speed. However, outside the rated speed operation, the flux has to be decreased like an inverse function of speed. By weakening the rotor flux, the induction machine can reach speeds...
Ngày tải lên: 27/10/2013, 23:15
IEC 60909 3 short circuit currents in three phase a c systems currents during two separate sim
... COMMISSION ___________ SHORT -CIRCUIT CURRENTS IN THREE- PHASE AC SYSTEMS – Part 3: Currents during two separate simultaneous line-to-earth short circuits and partial short -circuit currents flowing ... short circuits 19 5.1 Calculation method 19 5.1.1 Initial symmetrical short -circuit current 19 5.1.2 Peak short -circuit current, symmetrical short -circuit breaking current and steady-state short -circuit ... travers la terre Short -circuit currents in three- phase a.c. systems – Part 3: Currents during two separate simultaneous line-to-earth short circuits and partial short- circuit currents flowing...
Ngày tải lên: 04/04/2014, 11:58
FPGA BASED SVPWM CONTROLLER FOR THREE PHASE AC AC MATRIX CONVERTER
Ngày tải lên: 14/05/2014, 22:37
A three phase voltage type PWM rectifier with the function of an active power filter
Ngày tải lên: 03/01/2014, 19:44
Current control techniques for three phase voltage source PWM converters a survey
... Block scheme of FL controller, (b) control surface of con- ventional PI controller, (c) control surface of FL controller; comparison of current-tracking performance with PI and FL controller: (d) ... speed AC drives,” in Conf. Rec. IEEE-IAS Annu. Meeting, Denver, CO, 1986, pp. 235–243. [25] P. Feller, Speed control of an ac motor by state variables feedback with decoupling,” in Proc. IFAC ... because even small phase or amplitude errors cause incorrect system operation (e.g., vector-controlled ac motors). In such cases, the control schemes based on the space-vector approach are applied....
Ngày tải lên: 03/01/2014, 19:45
Tài liệu ime Control of a Three Phase 4 Wire PWM Inverter with Variable DC Link Voltage and Battery Storage for PV Application doc
... con t a se inverter s d to mach f o c ontains the link voltage nk control i s T he control o discrete sy s Figur e t rol strategy s in [1], [2], o r three pha s current mi n control loo p s intended ... propose C link capaci t t ween the n e p ut voltage. T t rol is imple m e DC link v o i s achieved a I nverter) is e r aw back is t h 4 wire PW M c t-current, it t o ac power. output pow a tion, ... UN I TECHN O m ent of Ele c and De r s tract e PWM inv e e phase load o rage (BES) a battery ene r w ith a LC ou t be always c r ature are o c t tery energy r voltage. T h ace equatio n a lgorithm is...
Ngày tải lên: 19/01/2014, 02:20
Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
... 1.0 A A schematic diagram of a DC motor is shown in Figure 6. Figure 6. Schematic Diagram of a DC Motor Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System ... root-locus domain. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 24 Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System 1. Introduction This ... Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 21 Table 1. Specifications of the Honeywell 22VM51-020-5 DC Motor with Tachometer Motor Characteristics Units Values...
Ngày tải lên: 25/01/2014, 13:20
Chapter 12 fully controlled three phase bridge converters
... to achieve either a three- phase controllable voltage source or a three- phase controllable current source, as was assumed to exist in previous chapters. 12.2. THE THREE- PHASE BRIDGE CONVERTER ... permanent-magnet ac machines, we set forth control strategies that assumed the machine was driven by a three- phase, variable- frequency voltage or current source without mention of how such a source is actually ... the three- phase bridge were set forth with no discussion as to how the bridge would enable operation of a three- phase ac machine from a dc supply. In this section, a basic method of accomplishing...
Ngày tải lên: 16/02/2014, 18:53
Chapter 14 permanent magnet AC motor drives
... or nonsinusoidal back emf waveforms. Machines with sinusoidal back emfs may be controlled so as to achieve nearly con- stant torque; however, machines with a nonsinusoidal back emf may be less ... nominal operating speed of 200 rad/s (mechanical). 542 PERMANENT-MAGNET AC MOTOR DRIVES The structure of the control algorithms determines the type of permanent-magnet ac motor drive, of which ... structure of the controls Figure 14.1-1. Permanent-magnet ac motor drive. Electrical System Command Signal Power Converter Control PM AM Mechanical System Sensors 566 PERMANENT-MAGNET AC MOTOR DRIVES ...
Ngày tải lên: 16/02/2014, 18:54
Conventional Three-Phase Fixed-Bed Technologies: Analysis and Critique docx
... features Slurry reactor Fixed-bed reactors 1 Reaction performance 1.1 Overall reaction rate related to the catalyst mass High Low 1.2 Overall reaction rate related to the reactor volume (or volume ... compound in liquid Subscripts A Liquid reactant B Gaseous reactant cat Catalyst g Gas phase xiv List of Symbols Chapter 1 Introduction Three- phase fixed-bed reactors are very often encountered in ... multiphase processes: Trickle-Bed Reactors (TBRs), Bubble (packed) Column Reactors (BCRs), and MultiTubular Reactors (MTRs). Some typical reactions realized in these reactors are exemplified in Table...
Ngày tải lên: 16/03/2014, 22:20
Báo cáo "Determining thermal expansion coefficients of three-phase fiber composite material reinforced by spherical particles " potx
... increasing volume fraction of glass particle phase, three- phase composite is more heatproof than itself when increasing volume fraction of glass fibre phase. This is meaningful in manufacturing materials ... fraction of the particle phase we increase, the more thermal expansion coefficients of three- phase composite material reduce. 4. Conclusions Based on the idea solving the problem of three- phase ... letting volume fraction of the particle phase be constant and increasing step by step volume fraction of the fibre phase will reduce thermal expansion coefficients of three- phase composite material....
Ngày tải lên: 28/03/2014, 13:20
Báo cáo " Three-phase polyme nanocomposite material " doc
... material according to the constants of components of the initial three- phase material, we only replace elastic modules of the supposed matrix material (8) into formula (10). Three- phase polyme ... mechanic of three- phases nano composite in which two-phases is grains of pad and the structure of one -phase in reinforced two-phases is a nano structure, basing on consideration for interaction ... the three- phase composite in this paper, therefore, include: polyme matrix, reinforced pad seeds and nano seeds (Fig 1) Fig 1. Model of the three- phase composite We approach...
Ngày tải lên: 28/03/2014, 13:20
Three phase a c circuits
... of a three- phase machine is utilised. A single phase alternator utilises only tw o thirds of the stator slots. 2 A three- phase alternator has a better distribution factor. 3 A three- phase, ... that from a single -phase machine. 6 A three- phase supply produces a rotating magnetic fi eld; whereas a single -phase supply produces only a pulsating fi eld. 7 Three- phase motors are inherently ... inherently self-starting; whereas single -phase motors are not. 8 The torque produced by a three- phase motor is smooth; whereas that produced by a single -phase motor is pulsating. CH003-H8747.indd...
Ngày tải lên: 03/04/2014, 20:52
Neutral current compensation in three phase, four wire systems a review
Ngày tải lên: 11/05/2014, 22:06