electric machine Chapter 7 DC Machines
electric machine Chapter 7 DC Machines
.
mdaa
ω
Φ
=
KE (7. 14)
m
a0
m0
a
E
ω
ω
⎛⎞
=
⎜⎟
⎝⎠
E
(7. 22)
0
0
aa
E
n
n
E
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
=
(7. 23)
12
13
Chapter 7 DC Machines
Dc machines.
Figure 7. 6 Speed-torque characteristics of dc motors.
7. 4 Analytical Fundamentals: Electric- Circuit Aspects
Analysis of dc machines: electric- circuit
electric machine Chapter 5 Synchronous Machines
. Machines
19
Chapter 5 Synchronous Machines
Main features of synchronous machines:
A synchronous machine is an ac machine whose speed under steady-state. Polyphase Synchronous Machines
Synchronous machines:
Armature winding: on the stator, alternating current.
Field winding: on the rotor, dc power supplied
electric machine Chapter 6 Polyphase Induction Machines
. impedances.
10
11
12
Chapter 6 Polyphase Induction Machines
Study on the behavior of polyphase induction machines:
The analysis begins. loading presented by the machine on its supply
source.
§6.1 Introduction to Polyphase Induction Machines
An induction machine is one in which alternating
Chapter 10 DC machines and drives
. of dc
machines, such as the shunt-connected, the series-connected, and the compound-
connected dc machines. The equivalent circuits for each of these machines. permanent-
magnet dc machines. The series and compound machines are treated in problems at the
end of the chapter.
Shunt-Connected dc Machine
Block
Chapter 7 machine equations in operational impedances and time constants
. are
vs
V
s
qs
r
s
()=−
2
(7. 7-6)
vs
ds
r
()= 0
(7. 7 -7)
If (7. 7-6) and (7. 7 -7) are substituted into (7. 7-1) and (7. 7-2) , and if the terms involving.
i
qs
r**
, (7. 7-35) , we obtain (7. 7-23) . Similarly,
if we add
i
ds
r*
, (7. 7-31) , and
i
ds
r**
, (7. 7-36) , we obtain the last term of (7. 7-24) . In
Mechanisms and Mechanical Devices Sourcebook - Chapter 7
. be
particularly useful in machines that must
be dismantled to uncover the belt pul-
leys, in permanently encased machines,
and in machines installed in remote
places.. plastic.
Sclater Chapter 7 5/3/01 12:34 PM Page 2 27
201
CAM-CURVE GENERATING MECHANISMS
It usually doesn’t pay to design a complex cam curve if it can’t be easily
machined—so
Bài giảng marketing quốc tế CHAPTER 7
. D
NHÀ PP E
NHÀ PP F
1
2
3
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6
Khách hàng
h2
h1
5
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1
1
3
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2
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4
4
5
5
6
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7
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2. Giải quyết mâu thuẫn về số lượng, chủng loại:
1
1
2
2
3
3
4
4
5
5
6
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. PHÂN PHỐI
•
QUẢN LÝ KÊNH PHÂN PHỐI
•
MÂU THUẪN TRONG KÊNH PHÂN PHỐI
Chương 7
PHÂN PHỐI
10
1. Phân tích nhu cầu phục vụ khách hàng:
* Phân tích giá trò
Đề thi quản trị chiến lược - Chapter 7
. ChiếnLược
Chương 7
Hoạch định tài chính chiếnlược
7. 1) Quảntrị giá trị vốncổđông (Shareholder Value)
7. 2) Phân tích các chỉ số tài chính
7. 3) Hoạch định. Mại14
Chương 7
7.2.4) Phân tích & đánh giá mộtsố chỉ số tài chính DN
Nghiên cứu“Kháiluận QTCL” – Chapter 5
BM Quản trị chiến lược Đại học Thương Mại15
Chương 7
7.3)
Chapter 7 - Beyond LINQ
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