further discussion and summary on 2 d motion estimation

... a period of operation periodic duty with related at constant load corresponding to a predetermined speed of rotation, load and speed changes followed by one or more periods of operation at another ... represented as: EQUATION 5: Flow2 Speed2 Head2  Speed2  Power  Speed2   and  = ; = = Flow Speed1 Head1  Speed1  Power  Speed1      1 Note: Subscripts (1) and (2) signify two different ... China - Shunde 23 55 West Chandler Blvd Chandler, AZ 8 522 4-6199 Tel: 480-7 92- 7966 Fax: 480-7 92- 4338 Room 401, Hongjian Building No Fengxiangnan Road, Ronggui Town Shunde City, Guangdong 528 303, China...

Ngày tải lên: 25/01/2014, 13:20

... 100 V+ V+ D2 IN VB 12 SD 100 NC D1 170 VDC HO NC 14 VB IN D1 D2 SD 12 VS DT S1 S2 NC1 VSS 10 NC2 COM IN NC3 Z3 V+ HO Z1 V+ V- GND MOTOR VS S1 S2 DT 10 VSS NC1 IN COM NC2 GND V- LO 1u 1u Z2 Z4 NC3 ... right-side switcher does not conduct Ground is provided to the non-conducting S2 of the left-side switcher and S1 of the right-side switcher to reduce noise b SECOND HALF-CYCLE The second half-cycle ... of being dissipated in the resistor DEADTIME DISTORTION As reported in [4], deadtime distortion is a result of the deadtime added to the PWM signal by the gate driver This deadtime is necessary...

Ngày tải lên: 17/12/2013, 18:06

... ISO/TS-16949 :20 02 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India The ... Tel: 43- 724 2 -22 44-39 Fax: 43- 724 2 -22 44-393 Denmark - Copenhagen Tel: 45-4450 -28 28 Fax: 45-4485 -28 29 India - Pune Tel: 91 -20 -25 66-15 12 Fax: 91 -20 -25 66-1513 France - Paris Tel: 33-1-69-53-63 -20 Fax: ... 82- 53-744-43 02 China - Hong Kong SAR Tel: 8 52- 2401- 120 0 Fax: 8 52- 2401-3431 Korea - Seoul Tel: 82- 2-554- 720 0 Fax: 82- 2-558-59 32 or 82- 2-558-5934 China - Nanjing Tel: 86 -25 -8473 -24 60 Fax: 86 -25 -8473 -24 70...

Ngày tải lên: 11/01/2016, 16:47

... relief under that Act Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates It is your responsibility ... Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code ... Tel: 43- 724 2 -22 44-39 Fax: 43- 724 2 -22 44-393 Denmark - Copenhagen Tel: 45-4450 -28 28 Fax: 45-4485 -28 29 India - Pune Tel: 91 -20 -25 66-15 12 Fax: 91 -20 -25 66-1513 France - Paris Tel: 33-1-69-53-63 -20 Fax:...

Ngày tải lên: 11/01/2016, 17:01

... types consist of two IGBTs and two capacitors Additional diodes are needed in the vertical type These configurations can reduce the total conduction losses because of the reduced number of devices; ... starting depends on desired starting period, it was confirmed that MERS can reduce inrush current Appropriate control method for each individual motor and load type, such as current limit control ... achieved Consequently, inrush current is decreased and the influence to the other loads is weakened Moreover, mechanical fatigue of induction motor will be reduced and life time will be extended C...

Ngày tải lên: 15/10/2013, 16:10

... using the “TMS 320 F243 DSP controller,” which is embedded in an existing hardware design and a control scheme called “Field Orientated Control,” we can control the torque of an induction machine with ... motor controller is specifically designed for Pulse-width modulation The text by Mohan, Undeland and Robbins [2] gives good explanations on the operating principles of the induction machine Concepts ... Operation of the induction motor above the rated speed affects the drive efficiency and torque production due to heat dissipation and magnetic saturation [17] Therefore, the rotor flux must be reduced...

Ngày tải lên: 27/10/2013, 23:15

... Simulation and Speed Control of Induction Motor Drives 20 12 Figure 3 .25 :Torque-Speed Characteristics for machine parameters as in Fig 3 .20 21 | P a g e Simulation and Speed Control of Induction Motor ... studied by simulating them in MATLAB Simulink and were compared 1|Page Simulation and Speed Control of Induction Motor Drives 20 12 CHAPTER LITERATURE REVIEW 2. 1 Three phase induction motor and ... Simulation and Speed Control of Induction Motor Drives 20 12 3.1 Low stator inductance (~0.05 mH) Figure 3 .2: Parameters of 3- induction motors (Low stator impedance) 6|Page Simulation and Speed Control...

Ngày tải lên: 18/12/2013, 22:06

... correspondingly defined as , and for phase This segmentation complexity is introduced for avoiding sector identification and use of only one timer at the output which will be explained , scaled by ... (10) (15) (11) as indicated in the figure The corresponding expressions for digital words are and the corresponding digital words are (16) ( 12) (13) (17) corresponds to time and is alwhere For ... the undermodulation region The maximum limit of the undermodulation region is reached when the moduwhere ( command lation factor peak value of or reference voltage magnitude and phase fundamental...

Ngày tải lên: 22/12/2013, 08:16

... and axial alignment 3.6.5.4 Alignment 3.6.5.5 Permissible misalignment Care after installation 22 22 22 22 23 23 23 25 25 25 25 25 26 26 26 26 26 26 26 26 27 27 ... holes should be considered prior to construction The position of the grouting holes and the height of the foundation must agree with the corresponding dimensions on the provided dimensional drawing ... warranty conditions are in more detail defined according to Orgalime S2000 terms and conditions NOTE: The warranty issued is not valid, if the operation conditions of the machine are changed or any...

Ngày tải lên: 26/01/2014, 09:20

... vqs and vds by its commanded value of zero in (13 .2- 9) and (13 .2- 10) and substitution of the results into (13 .2- 8) yields Te = P e* e (vqs iqs − 2rs I s2 ) 2 ωe (13 .2- 11) e e iqs2 + ids2 (13 .2- 12) ... unloaded, this would result in a transfer function between the actual and commanded speeds with two critically damped poles with 1-second time constants Also used in conjunction with the control ... flux-oriented control and indirect rotor flux-oriented control For discussions of the other types, the reader is referred to texts entirely devoted to field-oriented control such as References and The...

Ngày tải lên: 16/02/2014, 18:54

... and Ashley Olsen are continuing to jump on the designer bandwagon, and fast fashion—from H&M, Uniqlo, and Forever 21 —is claiming chunks of the fashion-forward market The press and buyers send ... Challenges The Sources Once You Order • Production The Production Plan Sample Production Tips and Considerations When Hiring a Patternmaker, by Sally Beers Production Options Production Management Factory ... The Fashion Designer Survival Guide Revised and Expanded Edition Start and Run Your Own fashion Business Mary Gehlhar Contents Foreword Preface One Piece of Advice • Before You Start...

Ngày tải lên: 03/04/2014, 18:02

... -1 +1 -1 V2 21 10 11 21 19 11 12 19 20 12 10 20 V3 24 13 14 24 22 14 15 22 23 15 13 23 V4 16 17 17 18 18 16 V5 12 19 20 12 10 20 21 10 11 21 19 11 V6 15 22 23 15 13 23 24 13 14 24 22 14 vectors ... 4 5 6 1 2 3 0 Sector of output voltage as function of mode and section of input voltage [6] Mode 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Figure iC iB 24 0° 120 ° 6 10 11 12 13 14 ... calculated on the basis of measured values and switch configuration of the matrix converter B Sliding Mode Control In [11] and [ 12] the design of a sliding mode controller for a matrix converter...

Ngày tải lên: 13/05/2014, 00:55

... rated frequency synchronous speed and operating speed are 1800 rpm and 1 728 rpm; the difference of the two is 72 rpm At 30 Hz synchronous speed and operating speed are 900 rpm and 820 rpm; the difference ... six-step mode of operation, two additional vectors (no and 8) are added at the bottom of the Table These two vectors can be obtained only in PWM operation of the VSI and they describe the condition when ... -(1/3)VDC (2/ 3)VDC -(1/3)VDC 2, 3,5 v4phase (011) - (2/ 3)VDC (1/3)VDC (1/3)VDC 2, 4,5 v5phase (001) -(1/3)VDC -(1/3)VDC (2/ 3)VDC 1,4,5 v6phase (101) (1/3)VDC - (2/ 3)VDC (1/3)VDC Applying once more...

Ngày tải lên: 11/07/2014, 05:20

... V1e2R2'/s ωsyn (R1e+R2'/s )2+ (X1e+Xl2' )2 or in terms of the maximum torque and the corresponding slip as Induction Motors 2Tmax T=s maxT s where and +s s maxT V1e2 Tmax = 2 syn R1e+ R1e2+(X1e+Xl2' )2 ... phase induction motor is wound for poles and is supplied by a 50 Hz system The stator winding is delta connected with 24 0 conductors/phase while the rotor winding is star connected with 48 conductors/phase ... referred to the stator: R1=0 .29 4, R2'=0.144, X1=0.503, X2'=0 .20 9, and Xm=13 .25 Induction Motors The total friction, windage, and core losses may be assumed to be constant at 403 W, independent...

Ngày tải lên: 11/07/2014, 05:20

... Objective and contribution 1.4 The structure of the thesis Understanding the Basis of Induction Motor Faults 2. 1 Bearing Damage 9 2. 2 Electrical Induced Faults 12 2.3 Others 16 Methods for Fault Diagnosis ... increase and deteriorate the condition of the machine or suddenly develop into a shutdown condition It is difficult and also too expensive for the industry to employ maintenance personnel dealing ... vibration usually appears at fraction of 1X, mostly at 1/2X However, crack shaft and foundation distortion are difficult to identify Crack shaft mostly produces vibration at 2X, and foundation distortion...

Ngày tải lên: 13/11/2014, 06:43

... 1 .2 Earlier Work and Contribution of this Thesis During the past decade, many methods have been developed in the research area of condition monitoring and fault diagnosis of induction motor [2] -[4] ... indices are studied and compared to quantify the feature which reveals the motor rotor condition 3.1.5.1 Mean and Standard Deviation Indices Among various statistic measurements, the mean and ... addressed by neural network and a false warning is likely to occur Hence, a reliable detection technique is needed for the online condition monitoring and fault detection of motor with limited...

Ngày tải lên: 26/09/2015, 10:59

... 12. 23.36 17-Apr -20 09 27 -Jun -20 09 19-Mar -20 09 05.59.30 08. 12. 46 12. 23.36 24 -Dec -20 07 24 -Dec -20 07 22 -Feb -20 08 05 .21 .22 13.18.18 23 .49.03 15-Oct -20 07 24 -Dec -20 07 24 -Dec -20 07 28 16 .29 .34 05 .21 .22 ... systems condition detection Chapter presents and discusses results of the proposed method of condition detection and diagnosis of induction motors and electromechanical systems Chapter concludes the ... turbines and at Generator Drive-end and not Generator Drive-end for each turbine And the data were recorded in different time period and the recording time for each is around 40 seconds The detail...

Ngày tải lên: 30/09/2015, 13:41

... ¼ 1, 2, and Not mentioned Trim-balancing allowed Not mentioned Not mentioned Air-gap tolerance Not mentioned Foot flatness Not mentioned Not mentioned Induction-brazed end rings Full-speed balancing ... second edition introduced vibration levels in a graphical form API 541 third edition was introduced in 1995 and fourth edition in 20 03 This version changed the requirements for many of the construction ... magnetic field around the rotor bar and the resulting force on stator teeth Conclusions The vibration requirements of various international standards and the design considerations and manufacturing...

Ngày tải lên: 26/11/2015, 09:41