electric motors and drives austin hughes free download
Electric motors and drives technical manual 2010 edition
Ngày tải lên :
12/01/2014, 10:43
... class. Slip
-
ring
motors, commutator motors and brake motors
can all be made in
flameproof versions.
No external parts may cause sparks.
The motors must have both an interna
l and an external earthing ... sets the standards. Or at least many countries base
their standards very closely on the IEC standards (for example,
Germany's VDE 0530 standard and Great Britain's BS 2613 Standard
closely ... though, the standards can be grouped into two major
categories: NEMA and IEC (and its derivatives).
In North America, the National Electric Man
ufacturers Association
(NEMA) sets motor standards,...
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Electric Machines and Drives Part 1 pot
Ngày tải lên :
21/06/2014, 01:20
... Institute of Electrical and Electronics Engineers (IEEE) “Standard
Test Procedure for Polyphase Induction Motors and Generators” IEEE 112-B and in its Canadian
CSA 390 adaptation. The standard first ... Medium voltage motors
• Repaired motors
• TENV and TEAO enclosures
It’s relevant to notice that regulation concerning single phase and three-phase small (42/48
and 56 frame) motors is ready, ... cm.
ISBN 978-953-307-548-8
ELECTRIC MACHINES
AND DRIVES
Edited by Miroslav Chomat
Contents
VI
Swarm Intelligence Based Controller for Electric
Machines and Hybrid Electric Vehicles Applications...
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Electric Machines and Drives Part 2 docx
Ngày tải lên :
21/06/2014, 01:20
... Canada with the adoption of Standard CAN/CSA-
Electric Machines and Drives
14
Fig. 7. Stator Premium motors
Fig. 8. Rotor Premium motors
Electric Machines and Drives
16
Fig. 11. ... incentives and voluntary measures for the energy efficiency of
electric motors is not sufficient, as it is prerequisite to implement mandatory measures for
Electric Machines and Drives
22 ... (2008a) “Barriers and incentive policies to high-efficiency motors
and drives market penetration,”. IEEE International symposium on power
electronics, electrical drives, automation and motion SPEEDAM...
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Electric Machines and Drives part 6 ppt
Ngày tải lên :
21/06/2014, 01:20
... estimated speed and reference speed, (i.e.
e
ω
=
ω
−ω
re f
), a proportional integral compensation is proposed, as follows
100
Electric Machines and Drives
Electric Machines and Drives
90 ... jNωL
m
i
s
+ L
r
d
dt
i
r
+ L
m
d
dt
i
s
(26)
102
Electric Machines and Drives
where R
s
, R
r
, L
s
and L
r
are the stator/rotor resistances and inductances, L
m
is the magnetizing
inductance, ... θ
0
sin θ
0
cos θ
0
and K
=
2
3
⎡
⎢
⎣
1
−
1
2
−
1
2
0
−
√
3
2
−
√
3
2
⎤
⎥
⎦
.
x
qd
and x
αβ
stand for two-dimensional voltage flux and stator current vector, respectively on
(q-d) and ( α-β)reference...
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Electric Machines and Drives part 7 ppt
Ngày tải lên :
21/06/2014, 01:20
... desired torque, and will be taken as a simple PI controller. The reader is
referred to (1) for motivation and additional details on this control configuration.
122
Electric Machines and Drives
0 10 ... variables
1
prime mover torque and speed, (τ
LG
, ω
G
) ,and
rotor and stator voltages and currents,
(v
rG
, i
rG
), (v
sG
, i
sG
), respectively. The IM, on the other
hand, is a two–port system with ... infinite, and saturation, iron losses, end winding
and slot effects are neglected. Only linear magnetic materials are considered, and it is further
assumed that all parameters are constant and known....
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Tài liệu Functional Specification of JPEG Decompression. and an Implementation for Free ppt
Ngày tải lên :
09/12/2013, 15:15
... luminance information is not downsampled,
and chrominance components are downsampled by factors 2 2and4 4, respectively. Then we
need 16 luminance units, and 4 and 1 chrominance units to make up ... International Standards Organization. Digital compression and coding of continuous-
tone stil l images.DraftInternational Standard DIS 10918-1. (reprinted in PeMi93]).
PeMi93] William Pennebaker and Joan ... concisely and elegantly, and that the borderline between `specication' and
`implementation' is fading: the correctness of the specication can be demonstrated informallyby
executing it, and...
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Tài liệu Notes for an Introductory Course On Electrical Machines and Drives E.G.Strangas MSU Electrical ppt
Ngày tải lên :
25/01/2014, 13:20
... understanding of
modern machines and drives. Power electronics are introduced, at the device and systems level, and
electrical drives are discussed.
Equations are kept to a minimum, and in the examples only ... basic concepts and build the equations and circuits corresponding
first to an ideal transformer and then to typical transformers in use. We’ll introduce and work with
the per unit system and will cover ... dash-dot.
Preface
The purpose of these notes is be used to introduce Electrical Engineering students to Electrical
Machines, Power Electronics and Electrical Drives. They are primarily to serve our students at
MSU:...
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Tài liệu Manual for induction motors and generators ppt
Ngày tải lên :
26/01/2014, 09:20
... attached to the concrete, they
must be unpainted and free from pollution and dust.
Manual for Induction Motors and Generators
24 - Installation and Alignment
3BFP 000 050 R0101 REV C
Figure 3-2 ... washed and rinsed and thus free from pollution and dust. Oil or grease
must be removed by chipping away slices of the concrete surfaces
• Check that the position of the grouting holes and the ... coating, and check the measurements of the
extension and the coupling against the provided drawings. Ensure also that the keyways in
the coupling and the shaft extension are clean and free from...
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asg 3 motors and oads
Ngày tải lên :
15/02/2014, 08:37
... Operating asynchronous motors
3.6 Electric motor comparison
3. Motors and loads
50
A Fig. 25 Ward Leonard arrangement
A Fig
.
26
Comparison of electric motors
Summary3. Motors and loads
37
1
2
3
4
5
6
7
8
9
10
11
12
M
3.1 ... phase asynchronous motors 38
3.2 Single-phase motors 42
3.3 Synchronous motors 43
3.4 Direct current motors commonly named DC motors 45
3.5 Operating asynchronous motors 47
3.6 Electric motor comparison ... Other types of synchronous motors
To conclude this overview of industrial motors, we can mention linear
motors, synchronised asynchronous motors and stepper motors.
v Linear motors
Their structure...
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Chapter 10 DC machines and drives
Ngày tải lên :
16/02/2014, 18:48
... the output of this comparator ( L ) is high, S 1 and S 2 are closed and S 3
and S 4 are open; when L is low, S 3 and S 4 are closed and S 1 and S 2 are open.
The action of this type of current ... low and S 1 and S 2 are opened and S 3 and S 4 are close. The armature
current decreases until
ii
aa
=−
*
ε
, at which time the comparator output becomes high;
S 1 and S 2 are closed and ... to the comparator with hysteresis, is positive and greater than
ε . The output of the comparator is high, and S 1 and S 2 are closed and S 3 and S 4 are
open. The armature current increases...
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