Standards for efficiency of electric motors permanent magnet synchronous motor technology
Standards for efficiency of electric motors permanent magnet synchronous motor technology
... and R McElveen, “InIMPORTANCE OF duction vs permanent magnet motors, ” IEEE now profit from the advantages of PM Ind Applicat Mag., vol 15, no 6, pp 28–35, motors For single-speed applications, ... high motor efficiency when the motor is designed for and operated at 60 Hz instead of 50 Hz The difference in efficiency between 50 and 60 Hz varies with the number of po...
Ngày tải lên: 26/11/2015, 09:42
Use of an extension of the park's transformation to determine control laws applied to a non sinusoidal permanent magnet synchronous motor
... knowledge of the non sinusoidal permanent magnet synchronous motor We are so able as well to analyse the classical control laws such as 120' voltage control for example, as to deduce of this new ... electromotiveforces, the motor being not supply Park's transformation AAer this first transfoxmation, the Pa& transfomation allows us to work in the rot...
Ngày tải lên: 03/01/2014, 19:50
FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSIS
... FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSES YU YINQUAN A THESIS SUBMITTED FOR THE DEGREEM OF DOCTOR OF PHILOSOPHY ... COMPUTATION OF UNBALANCED MAGNETIC PULL AND MECHANICAL UNBALANCED FORCE IN MOTOR 64 5.1 Fundamental theory of electromagnetic force calculation 64 5.2 Introduction of...
Ngày tải lên: 16/09/2015, 12:06
Numerical analysis of a brushless permanent magnet DC motor using coupled systems
... to characterize the material Another type of material that is characterized by a broad hysteresis loop is called hard magnetic material 1.3.1 Hard magnetic materials (Permanent magnets) Permanent ... commutator motor: The construction of a permanent magnet DC motor( PMDC) is similar to a DC conventional motor with the electromagnetic excitation system replaced by per...
Ngày tải lên: 16/09/2015, 12:26
Analysis, design and control of permanent magnet synchronous motors for wide speed operation
... 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
Sensorless drives for permanent magnet synchronous motors
... and its ZCP waveforms based on modified algorithm Captured voltage and current waveforms for VDC = 5V Captured voltage and current waveforms for VDC = 8.48V Captured waveforms for VDC = 8.48V ... drive is conventionally applied on BLDC motors, a class of permanent magnet motors with trapezoidal back-EMFs, for smooth torque production In three phase BLDC drives, the motor is ty...
Ngày tải lên: 11/09/2015, 09:07
Design optimization of permanent magnet synchronous motors using response surface analysis and genetic algorithm
... The development of Permanent Magnet Machines 1.1.2 Features of permanent magnet motors Permanent magnet synchronous motors iii 1.2.1 Structures and operating principles ... with the analysis and design of buried type Interior Permanent Magnet Synchronous Motors (IPMSM) The objective is to develop a design optimization procedure for this type of...
Ngày tải lên: 04/10/2015, 15:45
Computational analysis of a permanent magnet synchronous machine using numerical techniques
... is vital to machine analysis as it is a fast and low-cost way of predicting machine performances Traditional analytical methods, such as lumped parameter models are computationally fast and simple ... It also deals with the parameter estimation of permanent magnet synchronous machines using both experimental and computational methods A line-start interior permanent...
Ngày tải lên: 15/09/2015, 22:17
Chapter 14 permanent magnet AC motor drives
... torque may be instantaneously obtained Combining (14. 4-7), (14. 4-10)– (14. 4-12), (14. 4-19), (14. 11-7), and (14. 11-8) yields 578 PERMANENT- MAGNET AC MOTOR DRIVES ⎡ rrl ⎢ − Lrl ⎢ ˆ ⎡ ir ⎤ ⎢ ⎢ ⎥ ⎢ ˆ ⎢ ... triangle-modulated, or space-vector-modulated inverter to an idealized source is established 544 PERMANENT- MAGNET AC MOTOR DRIVES The six-stepped inverter-based perm...
Ngày tải lên: 16/02/2014, 18:54
Analysis and determination of cogging torque and unbalanced magnetic forces in permanent magnet spindle motors for hard disk drives
... 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
Strategy for the instantaneous torque control of permanent magnet brushless DC drives2
... the DSP controller together with the inner loop controller Both the sinusoidal current control and the instantaneous torque control are tested with the speed controller The time response of the ... simulated torque from the motor model is used as the feedback torque signal, i.e the feedback is ideal Therefore, the simulated performance of the controller...
Ngày tải lên: 03/01/2014, 19:52
Expansion of Operating Limits for Permanent Magnet Motor by Current Vector Control
... cases, the permanent magnet is demagnetized irreversibly by the flux-weakening control VI DEMAGNETIZATION OF PERMANENT MAGNET If the PM motor is controlled by the foregoing fluxweakening control ... MORIMOTO et al.: EXPANSION OF OPERATING LIMITS FOR PERMANENT MAGNET MOTOR - To examine the demagnetization of the permanent magnet due to the d-axis armat...
Ngày tải lên: 08/03/2014, 22:01
Báo cáo y học: "Efficiency of vibration exercise for glycemic control in type 2 diabetes patients."
... High-intensity resistance training improves glycemic control in older patients with type diabetes Diabetes care 20 02; 25 : 1 729 – 36 Fenicchia LM, Kanaley JA, Azevedo JL, et al Influence of resistance ... training increases insulin-mediated glucose uptake, GLUT-4 content, and insulin signaling in skeletal muscle in patients with type diabetes Diabetes 20 04; 53 :29 4...
Ngày tải lên: 26/10/2012, 10:04
Establishment of Effluent Standards for Industrial Wastewaters in Korea: Current Issues and Suggestions for Future Plan
... the current state of effluent standards in Korea and the considerations to be used in revising effluent standards and the framework referring to the cases of developed countries The purpose of ... changed in setting the effluent standards Table - Pollutants regulated under the effluent standards in Korea (Ministry of Government Legislation in Korea, 200...
Ngày tải lên: 05/09/2013, 10:15
A reliability data base for performance and predictive assessment of electric power systems
... Statistics, Canadian Electrical Asso~iation, Instruction Manual for Reporting Generation Equipment Outage Data, Canadian Electrical Association, Montreal Billinton R and Allan R N 1984 Reliability ... Billinton, R., Debnath, K., Oprisan, M and Clark, I M., April 1990, "The Canadian National Data Base for Reliability Evaluation and Assessment" , Proceedings 11th Advances in...
Ngày tải lên: 03/01/2014, 19:36