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Online since: November 2012
Authors: Bi Juan, Feng Long Shen
The Modeling and Simulation of Induction Motor Control System Based on Stator Flux-Oriented
Bi Juan 1, a, Fenglong shen2, b
Department of Mechatronic Engineering, Eastern Liaoning University, Dandong, Liaoning, China
abj-ll@163.com, b shenlu-2000 @126.com
Keywords: stator flux-oriented, induction motor, flux observer, mathematical modeling
Abstract.
Many flux estimation schemes have been studied by many scholars for its precision flux estimation is influenced only by stator resistance parameters [1].
Figure 1 Schematic diagram of stator flux observer Simulation The simulation of induction motor control system is achieved by using the SIMULINK / MATLAB.
References [1] Mitronikas E D, Safacas A N.
IEEE ISIE, 1999, 15(6):474-479
Many flux estimation schemes have been studied by many scholars for its precision flux estimation is influenced only by stator resistance parameters [1].
Figure 1 Schematic diagram of stator flux observer Simulation The simulation of induction motor control system is achieved by using the SIMULINK / MATLAB.
References [1] Mitronikas E D, Safacas A N.
IEEE ISIE, 1999, 15(6):474-479
Online since: July 2014
Authors: B. Vijaya Ramnath, C. Elanchezhian, V. Muthukumar, J. Jenish, V.M. Manickavasagam, S. Jayavel
So fibers with good strength and modulus and having good bonding with matrix should be used to a produce a good quality composite material [1-3].
This paper is to evaluate impact and compression properties of pineapple fiber based reinforced composite with epoxy resin as matrix. 1.
The test is conducted as per ASTM: D 695 standards Table 1 Energy absorbed in impact and compressive test values for the samples: Sample No Energy absorbed in Joules Ultimate load Fmax (KN) Compressive Strength Compressive modulus KN/mm2 MPa KN/mm2 MPa 1 3.9 7.26 0.06238 62.38 0.484 484 2 4.0 7.54 0.06534 65.34 0.491 491 3 3.8 7.12 0.06120 61.20 0.479 479 4 4.3 7.69 0.06870 68.70 0.491 491 .
Table 1 also shows the ultimate load and the corresponding compressive strength.
References: [1] F.
This paper is to evaluate impact and compression properties of pineapple fiber based reinforced composite with epoxy resin as matrix. 1.
The test is conducted as per ASTM: D 695 standards Table 1 Energy absorbed in impact and compressive test values for the samples: Sample No Energy absorbed in Joules Ultimate load Fmax (KN) Compressive Strength Compressive modulus KN/mm2 MPa KN/mm2 MPa 1 3.9 7.26 0.06238 62.38 0.484 484 2 4.0 7.54 0.06534 65.34 0.491 491 3 3.8 7.12 0.06120 61.20 0.479 479 4 4.3 7.69 0.06870 68.70 0.491 491 .
Table 1 also shows the ultimate load and the corresponding compressive strength.
References: [1] F.
Online since: April 2007
Authors: Ming Xing Ai, Hong Xiang Zhai, Zhen Ying Huang
Introduction
Widespread use of cermets consisting of copper and ceramics, including TiC/Cu and WC/Cu [1], is
due to their unique combination of desirable properties such as high strength, high electrical and
thermal conductivities.
The sample used to the present tribological test was a sample consisted of 50 % Ti3AlC2 and 50 % Cu by a nominal volume percentage; the microstructure is shown in Fig.1.
Fig. 5 is an EDS analyzed result for the Ti3AlC2/Cu friction surface shown in Fig. 4 (a), indicating Fig. 1.
References [1] J.R.
Forum Vol. 475-479 (2004), pp. 1251
The sample used to the present tribological test was a sample consisted of 50 % Ti3AlC2 and 50 % Cu by a nominal volume percentage; the microstructure is shown in Fig.1.
Fig. 5 is an EDS analyzed result for the Ti3AlC2/Cu friction surface shown in Fig. 4 (a), indicating Fig. 1.
References [1] J.R.
Forum Vol. 475-479 (2004), pp. 1251
Online since: March 2016
Authors: Shu Zhen Yu, Yue Cheng, Xiao Feng Fan, Li Ping Xu
XRD graph of CMC-nZVI is shown in Figure 1.
It is found from Figure 1 that, besides nZVI peaks, another K2SO4 diffraction peak also appeared at 2θ=30.1° and 31.2°.
Fig. 1 XRD pattern of CMC-nZVI Fig. 2 TEM spectrogram of CMC-nZVI TEM photos of CMC-nZVI are shown in Figure 2.
Table 1 Reaction kinetics and parameters of chloroform dechlorination under different initial chloroform concentration Reactor number Initial concentration of chloroform (μg/L) Kinetic equations The correlation coefficient R2 The apparent reaction rate constant K (h-1) A 100 R2=-0.1488x-1.3799 0.9581 0.1488 B 200 R2=-0.0478x-1.3039 0.6342 0.0478 C 300 R2=-0.0419x-1.0347 0.5712 0.0419 D 500 R2=-0.0306x-0.8715 0.7111 0.0306 E 1000 R2=-0.0250x-0.7982 0.6197 0.0250 Proposed chloroform dechlorination reactions mechanism.
[7] Cao Shi-hui, Dai Youzhi, Progresses in research of ultrasound technology for degradation of chloroporganics in water, Environmental Protection of Cheical Industry. 26(2006):475-479
It is found from Figure 1 that, besides nZVI peaks, another K2SO4 diffraction peak also appeared at 2θ=30.1° and 31.2°.
Fig. 1 XRD pattern of CMC-nZVI Fig. 2 TEM spectrogram of CMC-nZVI TEM photos of CMC-nZVI are shown in Figure 2.
Table 1 Reaction kinetics and parameters of chloroform dechlorination under different initial chloroform concentration Reactor number Initial concentration of chloroform (μg/L) Kinetic equations The correlation coefficient R2 The apparent reaction rate constant K (h-1) A 100 R2=-0.1488x-1.3799 0.9581 0.1488 B 200 R2=-0.0478x-1.3039 0.6342 0.0478 C 300 R2=-0.0419x-1.0347 0.5712 0.0419 D 500 R2=-0.0306x-0.8715 0.7111 0.0306 E 1000 R2=-0.0250x-0.7982 0.6197 0.0250 Proposed chloroform dechlorination reactions mechanism.
[7] Cao Shi-hui, Dai Youzhi, Progresses in research of ultrasound technology for degradation of chloroporganics in water, Environmental Protection of Cheical Industry. 26(2006):475-479
Online since: December 2011
Authors: Yu Xian Jia, Jin Lai Liu, Tao Jin
The γ' phase has the shape of irregular cuboid for [001] and [011] oriented samples (Fig. 1 a, c), and the shape of [111] oriented sample is irregular triangle (Fig. 1 e).
The appearance change of [111] oriented sample is the most obvious among the three directions, the boundaries and margins of the triangle γ' phase are passivated and some of which exhibit irregular circle (Fig. 1 f). 1µm e 1mm f 1µm c 1µm a d 1mm b 1mm Fig. 1 The as-cast and after standard heat treatment microstructures of the alloy: (a), (c) and (e) as-cast and (b), (d) and (f) after standard heat treatment of [001], [011] and [111] oriented samples respectively.
References [1] Gell M, Duhl D N, Giamei A F.
Vol.1 (1970), p. 491 [3] Takao Murakumo, Toshiharu Kobayashi, Yutaka Koizumi, Hiroshi Harada.
Vol. 460-461 (2007), p. 420 [11] Zhihui Wang, Tao Jin, Jinlai Liu, et al., Mater.Sci.Eng.A, Vol.479 (2008), p.148
The appearance change of [111] oriented sample is the most obvious among the three directions, the boundaries and margins of the triangle γ' phase are passivated and some of which exhibit irregular circle (Fig. 1 f). 1µm e 1mm f 1µm c 1µm a d 1mm b 1mm Fig. 1 The as-cast and after standard heat treatment microstructures of the alloy: (a), (c) and (e) as-cast and (b), (d) and (f) after standard heat treatment of [001], [011] and [111] oriented samples respectively.
References [1] Gell M, Duhl D N, Giamei A F.
Vol.1 (1970), p. 491 [3] Takao Murakumo, Toshiharu Kobayashi, Yutaka Koizumi, Hiroshi Harada.
Vol. 460-461 (2007), p. 420 [11] Zhihui Wang, Tao Jin, Jinlai Liu, et al., Mater.Sci.Eng.A, Vol.479 (2008), p.148
Online since: December 2012
Authors: Xiao Hua Yuan, Xian Bin Dai
Shizuishan desulfurization project, for example, in the desulfurization 6kV bus at the application of shunt power capacitors for reactive power compensation of energy conservation analysis.
3.1. 1 The Shizuishan desulfurization project electrical system design parameters and operation of the measured parameters
(1)Guodian Shizuishan Power Plant 2 * 330MW units FGD project construction drawings load statistics shown in table 3.1:
Table 3.1 Shizuishan power plant desulfurization system construction drawings load statistics
NO.
Device name Rated power of motor PN(kW) Desulfurization 6kV A Desulfurization 6kV B Remarks connected units work units Comput capacity (kW) connected units work units Comput capacity (kW) 1 Desulfurization booster fan 2800 1 1 2800 1 1 2800 2 Circulation pump 1 630 1 1 630 1 1 630 3 Circulation pump 2 710 1 1 710 1 1 710 4 Circulation pump 3 710 1 1 710 1 1 710 5 Oxidation fan 250 2 1 250 2 1 250 6 Low-voltage motors (Note) 1 1 1464 1 1 1190 Total rated power∑PN 6564 6290 Note: The low-voltage motors rated power by each low-voltage load conversion factor
Parameter name Unit Desulfurization 6kV A Desulfurization 6kV B Remarks 1 Active powerP kW 4653 3994 2 Reactive powerQ kvar 3583 3437 3 Apparent powerS kVA 5873 5269 4 Power factor cosφ 100% 0.79 0.76 5 Bus voltage U kV 6.21 6.37 6 Bus current I A 544 479 7 The accumulated power in a day kWh 105940 93307 Note: The apparent power S, the power factor cosφ computing data, the rest of the actual operating data for the franchise company. 3.1.2 Section A transformation of energy conservation analysis of reactive power compensation in the desulfurization 6kV Compensation the reactive power in desulfurization 6kV bus at the shunt capacitor, to convenience of calculation, we can consider that the load are given in Table 3.1 all in parallel with the bus 6kV motor, each motor are accordance with the domestic YKK series 6kV Three-phase asynchronous motor taken in rated power factor cosφN = 0.85, ηN = 0.94.
Automatic control, including protection, JX-the IBC-1 intelligent compensation switching control system, a total of three KYN28 cabinet size, indoor installation.
References [1] Factory commonly used in electrical equipment manusl .books.Supplement the 2002 China Electric Power Press
Device name Rated power of motor PN(kW) Desulfurization 6kV A Desulfurization 6kV B Remarks connected units work units Comput capacity (kW) connected units work units Comput capacity (kW) 1 Desulfurization booster fan 2800 1 1 2800 1 1 2800 2 Circulation pump 1 630 1 1 630 1 1 630 3 Circulation pump 2 710 1 1 710 1 1 710 4 Circulation pump 3 710 1 1 710 1 1 710 5 Oxidation fan 250 2 1 250 2 1 250 6 Low-voltage motors (Note) 1 1 1464 1 1 1190 Total rated power∑PN 6564 6290 Note: The low-voltage motors rated power by each low-voltage load conversion factor
Parameter name Unit Desulfurization 6kV A Desulfurization 6kV B Remarks 1 Active powerP kW 4653 3994 2 Reactive powerQ kvar 3583 3437 3 Apparent powerS kVA 5873 5269 4 Power factor cosφ 100% 0.79 0.76 5 Bus voltage U kV 6.21 6.37 6 Bus current I A 544 479 7 The accumulated power in a day kWh 105940 93307 Note: The apparent power S, the power factor cosφ computing data, the rest of the actual operating data for the franchise company. 3.1.2 Section A transformation of energy conservation analysis of reactive power compensation in the desulfurization 6kV Compensation the reactive power in desulfurization 6kV bus at the shunt capacitor, to convenience of calculation, we can consider that the load are given in Table 3.1 all in parallel with the bus 6kV motor, each motor are accordance with the domestic YKK series 6kV Three-phase asynchronous motor taken in rated power factor cosφN = 0.85, ηN = 0.94.
Automatic control, including protection, JX-the IBC-1 intelligent compensation switching control system, a total of three KYN28 cabinet size, indoor installation.
References [1] Factory commonly used in electrical equipment manusl .books.Supplement the 2002 China Electric Power Press
Online since: October 2010
Authors: Xue Peng Liu, Dong Mei Zhao, Bin Wang
It was widely adopted in the last decade[1,2] , and some
applications to PID controllers were also devised.
(1) perish algorithm: it is assumed that | Abi dλ λ ∃ < ,1 i s< < .
So mat i mat i-1 mat i-1 | Ab | Ab | Ab 4 z z δ = + (4) mat i mat i-1 mat i-1 | Ab | Ab | Ab 2 δ δ δ= + (5) mat i mat i+1 mat i+1 | Ab | Ab | Ab 4 z z δ = − (6) mat i mat i+1 mat i+1 | Ab | Ab | Ab 2 δ δ δ= + (7) If | Abi dλ λ ∃ < , 1i = , then mat i mat i+1 mat i+1 | Ab | Ab | Ab 2 z z δ = − (8) mat i+1 mat i+1 mat i | Ab | Ab | Ab δ δ δ = + (9) If | Abi dλ λ ∃ < ,i s= , then mat i mat i-1 mat i-1 | Ab | Ab | Ab 2 z z δ = + (10) mat i-1 mat i-1 mat i | Ab | Ab | Ab δ δ δ = + (11) Clone algorithm: if | Abi
References [1] Astrom K, Hagglund T.
"Dynamic behaviour model of permanent magnet synchronous motor fed by PWM inverter and fuzzy logic controller for stator phase current, flux and torque control of PMSM", IEMDC'01 2001,pp: 479~485 [10] Xiaohui Ge, Jin Huang.
(1) perish algorithm: it is assumed that | Abi dλ λ ∃ < ,1 i s< < .
So mat i mat i-1 mat i-1 | Ab | Ab | Ab 4 z z δ = + (4) mat i mat i-1 mat i-1 | Ab | Ab | Ab 2 δ δ δ= + (5) mat i mat i+1 mat i+1 | Ab | Ab | Ab 4 z z δ = − (6) mat i mat i+1 mat i+1 | Ab | Ab | Ab 2 δ δ δ= + (7) If | Abi dλ λ ∃ < , 1i = , then mat i mat i+1 mat i+1 | Ab | Ab | Ab 2 z z δ = − (8) mat i+1 mat i+1 mat i | Ab | Ab | Ab δ δ δ = + (9) If | Abi dλ λ ∃ < ,i s= , then mat i mat i-1 mat i-1 | Ab | Ab | Ab 2 z z δ = + (10) mat i-1 mat i-1 mat i | Ab | Ab | Ab δ δ δ = + (11) Clone algorithm: if | Abi
References [1] Astrom K, Hagglund T.
"Dynamic behaviour model of permanent magnet synchronous motor fed by PWM inverter and fuzzy logic controller for stator phase current, flux and torque control of PMSM", IEMDC'01 2001,pp: 479~485 [10] Xiaohui Ge, Jin Huang.
Online since: April 2016
Authors: Wei Cai, Ai Lian Liu, Jia Wen Xu, Nan Nan Mao
Experimental procedures
A group of (Ti51Ni49)1-xCex (x=0, 0.1, 0.5, 1, 2, 5at.%) alloys were prepared by a non-consumable arc-melting furnace using a water-cooled copper crucible.
Results and Discussion Fig. 1 shows the back scattering image are taken by SEM.
Fig. 2 shows the X-ray diffraction curves of (Ti51Ni49)1-xCex alloys.
Reference [1] K.
Zhao: Materials Science Forum, Vol.475-479 (2005), p. 1973
Results and Discussion Fig. 1 shows the back scattering image are taken by SEM.
Fig. 2 shows the X-ray diffraction curves of (Ti51Ni49)1-xCex alloys.
Reference [1] K.
Zhao: Materials Science Forum, Vol.475-479 (2005), p. 1973
Online since: November 2011
Authors: Yo Tomota, Satoshi Morooka, Yoshitaka Adachi, Naoko Sato, Mayumi Ojima
Adachi1, 2, e
1National Institute of Materials Science, 1-2-1 Sengen, Tsukuba, 305-0047, Japan
2Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japna
3The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan
479-5 Tokiwadai, Hodogaya, Yokohama 240-8501 Japan.
54-12-1 Nakanarusawa, Hitachi, 316-8511, Japan
aSATO.Naoko2@nims.go.jp, bojima@metall.t.u-tokyo.ac.jp, cmoro-ka@ynu.ac.jp
dtomota@mx.ibaraki.ac.jp, eADACHI.Yoshitaka@nims.go.jp
Keywords: ferrite-martensite dual phase steel, martensite morphology, 3D-image based stereology, topology.
The connectivity is given by Eq. 1 according to topological definition, c3=1-Connectivity. (1) where c is the Euler characteristic and the subscription is a dimension of the geometric graphics.
for two-dimension c3=1-g=n-e+f-c.
A change in these metric and topological features is summarized in Table 1.
References [1] Y.
The connectivity is given by Eq. 1 according to topological definition, c3=1-Connectivity. (1) where c is the Euler characteristic and the subscription is a dimension of the geometric graphics.
for two-dimension c3=1-g=n-e+f-c.
A change in these metric and topological features is summarized in Table 1.
References [1] Y.