AN1292 sensorless field oriented control (FOC) for a permanent magnet synchronous motor (PMSM) using a PLL estimator and field weakening (FW)

... 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

... 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

... vector không gian ñư c s d ng ñ ñi u n ñ ng cơ, có hai phương pháp chính: + ði u n ñ nh hư ng trư ng (Field Oriented Control) bao g m: phương pháp ñi u n vectơ tr c ti p (Direct Vector Control) phương ... “h p ñen”) K t h p tính ưu vi t c a phương pháp ñi u n khác nhau, lu n văn trình bày k thu t “ði u n ñ ng không ñ ng b theo phương pháp FIELD ORIENTED CONT...

Ngày tải lên: 31/07/2015, 21:49

... the approach taken in [5] and [6] Based on this nonlinear model, we design a path tracking control law based on feedback linearization Feedback linearization designs have the potential of reaching ... systems) A straightforward analysis will show that the system can always be rendered unstable: Just vary the reference input such that transitions are always taken before the transition...

Ngày tải lên: 22/03/2014, 11:20

... San Francisco, Calif, USA, February 2002 J Koh, K Muhammad, B Staszewski, G Gomez, and B Horoun, A sigma-delta ADC with a built -in anti-aliasing filter for Bluetooth receiver in 13 0nm digital ... ADC helps distributing the AGC function between the ADC and the intermediate frequency SIGMA-DELTA ADC DESIGN FIR antialiasing filter and decimation The diagram...

Ngày tải lên: 22/06/2014, 22:20

... points of families of nonexpansive mappings, J Math Anal Appl 211 (1997), no 1, 71–83 N Shioji and W Takahashi, Strong convergence of approximated sequences for nonexpansive mappings in Banach ... fixed points of nonexpansive non-linear mappings in Banach spaces, Arch Rational Mech Anal 24 (1967), 82–90 Y J Cho, S M Kang, and H Zhou, Some control conditions o...

Ngày tải lên: 23/06/2014, 00:20

... the approach taken in [5] and [6] Based on this nonlinear model, we design a path tracking control law based on feedback linearization Feedback linearization designs have the potential of reaching ... systems) A straightforward analysis will show that the system can always be rendered unstable: Just vary the reference input such that transitions are always taken before the transition...

Ngày tải lên: 27/06/2014, 18:20

... detected Free-lane description Local map building + FAILURE yes Lane changing FAILURE Reaching an appropriate start location Free-lane reached Free-space parameters Trajectory tracking Generation-execution ... of appropriate Local Trajectory backward & forward motions no Updating no Success ? local map Obstacle overtaken ? yes Nominal trajectory to reach yes Lane changing SUCCESS yes Nominal...

Ngày tải lên: 07/12/2015, 02:22

... 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

... 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

... DALY of a range of health interventions representing the situation in the health care sector at the time of study Before this study, there was only very limited and scattered information on the ... this paper is therefore to provide input into an analysis of identifying ways of improving the allocative efficiency of resource utilisation in the health...

Ngày tải lên: 13/08/2014, 11:22

... relevant for the efficiency of LD mapping as it will affect the LD pattern of marker haplotypes surrounding the QTL The aim of this study is to investigate the efficiency of various experimental designs for ... which consists of the average of the Hessian matrix and the Fisher information matrix RESULTS 3.1 Efficient designs for fine-mapping of QTL T...

Ngày tải lên: 14/08/2014, 13:22

... 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

... 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

... Formation of Aerobic Granular Sludge Two AUFB reactors were used for the formation of aerobic granular sludge Air was introduced from the bottom of the reactor, and aeration rate was gradually increased ... in a continuous-flow reactor Both surface loading and aeration rates affect the selection of well-settling sludge and the formation of...

Ngày tải lên: 05/09/2013, 10:15