Purged and pressurized motors for zones and divisions

... to the NFPA 496 [5] standard for requirements for purged and pressurized enclosures NEC Article 500.5(B)(1) Definition for Division Comparatively, for zone locations, IEC standard 60079-0 A class ... construction, and application requirements for purged and pressurized motors are very similar in both NEC and IEC standards other than a few differences discussed in t...

Ngày tải lên: 26/11/2015, 09:41

... the electromagnetic forces are extremely stringent Electromagnetic forces such as the cogging torque and unbalanced magnetic pull (UMP) generated in the permanent magnet spindles are of great concerns ... Modeling and Analysis of PM Brushless DC Motors 2.1 Electromagnetic Field in PM Brushless DC Motors In order to study the electromagnetic forces and t...

Ngày tải lên: 15/09/2015, 22:03

... Torque performance of SVM based DTC and Current Control for a wide speed operation 169 6.26 Power performance of SVM based DTC and Current Control for a wide speed operation ... Control of IPMSM in Wide Speed Operation 24 Outline of the Thesis 25 Analysis of Interior Permanent Magnet Synchronous Motors for Wide- Speed Operation ... pr...

Ngày tải lên: 15/09/2015, 22:06

... ROBUST DESIGN OF MINIATURISED SPINDLE MOTORS FOR HARD DISK DRIVE GAO XIAN KE (M.Eng, B.Eng) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ELECTRICAL AND ... application of robust design in hard disk drive industry As the objective of the research is to formulate effective robust design approaches systematically for the...

Ngày tải lên: 17/09/2015, 17:20

... MODELLING OF SWITCHED RELUCTANCE MOTORS FOR TORQUE CONTROL ZHENG QING (B Eng NCUT, CHINA) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF ELECTRICAL & COMPUTER ... search for powerful techniques for modelling of SRM for torque control since the torque control is at the core of all higher level control tasks This thesis aims at...

Ngày tải lên: 26/11/2015, 12:39

... - 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 ... instruction and user manual, this document is prevailing 3BFP 000 050 R0101 REV C Safety Instructions - Manual for Induction Motors and Generators 3BFP 000 05...

Ngày tải lên: 26/01/2014, 09:20

... deformation and results of Ar‐Ar dating in this  area  in order  to  constrain  in detail  the spatial  metamorphic evolution  and interpretation  of geodynamic setting of the Indochina.   ... inside this zone, so this W‐E metamorphic shear zone  could  be  representative  for the main  tectonic  boundary  between Kon Tum metamorphic massif and non metamorphic Truong Son belt d...

Ngày tải lên: 22/03/2014, 12:20

... of buffering on stream nitrate concentrations Streamside management zones for buffering streams on farms: observations and nitrate modelling 21 Discussion Buffering Effects The potential buffering ... bottom graph Nitrate Concentration (mg/L) Date 10 0.1 0.01 Day of Simulation Streamside management zones for buffering streams on farms: obse...

Ngày tải lên: 31/03/2014, 13:20

... begin Read and understand these instructions before performing any procedure on this drive DANGER RISK OF ELECTRIC SHOCK • Read and understand this manual before installing or operating the Altivar ... drives feature transformers Make this connection for each transformer CAUTION IMPROPER WIRING PRACTICES Making a connection inappropriate for the line voltage will damage the transf...

Ngày tải lên: 28/06/2014, 16:20

... Altivar 71 Catalog number (4)(5)(6) ATV71H075N4 ATV71HU15N4 ATV71HU22N4 ATV71HU30N4 ATV71HU40N4 ATV71HU55N4 ATV71HU75N4 ATV71HD11N4 ATV71HD15N4 ATV71HD18N4 ATV71HD22N4 ATV71HD30N4 ATV71HD37N4 ATV71HD45N4 ... Altivar 71 Catalog number (4)(5)(7) ATV71H037M3 ATV71H075M3 ATV71HU15M3 ATV71HU22M3 ATV71HU30M3 ATV71HU40M3 ATV71HU55M3 ATV71HU75M3 ATV71HD11M3X ATV71HD15M3X ATV71HD18M3X ATV71HD22M3X...

Ngày tải lên: 28/06/2014, 16:20

... suggestions for improving the accounting system for sales and business result in HINO MOTORS Vietnam, Ltd 3.1 Evaluation of accounting for sales and business result in HINO MOTORS Vietnam, Ltd 3.1.1 ... accounting for sales and business result in HINO MOTORS Vietnam, Ltd Chapter 3: Some suggestions for improving the ac...

Ngày tải lên: 24/08/2014, 05:25

... automatic software platform for fault detection and diagnosis of induction motors and electromechanical systems, analyzing vibration data features and studying and comparing related algorithm, and targeting ... APPLICATION OF COMPUTATIONAL INTELLIGENCE FOR FAULT DETECTION AND DIAGNOSIS OF INDUCTION MOTORS AND ELECTROMECHANICAL SYSTEMS ZHANG...

Ngày tải lên: 30/09/2015, 13:41

... (sequential failures) and SPARE gates We first present the gates added in the DFT framework and we introduce a Markov model of such a system We assume that the failure times and the repair times ... value of the PAND gate If un > S, we just write un into the sequence Then we can begin a simulation with the PAND gate replaced by a component who...

Ngày tải lên: 16/10/2015, 09:09

... Moment of Inertia and Torque Performance Sensorless Measurement for HDD Used Spindle Motors HUANG RUO YU (B.Eng Shanghai Jiaotong University) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ... wires And only the sensorless method is able to fulfill III Summary the task In this thesis, the sensorless measurement methods for the torque constant, Back-...

Ngày tải lên: 26/11/2015, 12:54

Ngày tải lên: 08/08/2012, 17:20