Quantcast ALTERNATOR ROTORS

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
3-6 PRIME MOVERS All generators, large and small, ac and dc, require a source of mechanical power to turn their rotors. This source of mechanical energy is called a prime mover. Prime movers are divided into two classes for generators-high-speed and low-speed. Steam and gas turbines are high-speed prime movers, while internal-combustion engines, water, and electric motors are considered low-speed prime movers. The type of prime mover plays an important part in the design of alternators since the speed at which the rotor is turned determines certain characteristics of alternator construction and operation. ALTERNATOR ROTORS There are two types of rotors used in rotating-field alternators. They are called the turbine-driven and salient-pole rotors. As you may have guessed, the turbine-driven rotor shown in figure 3-4, view A, is used when the prime mover is a high-speed turbine. The windings in the turbine-driven rotor are arranged to form two or four distinct poles. The windings are firmly embedded in slots to withstand the tremendous centrifugal forces encountered at high speeds. Figure 3-4.—Types of rotors used in alternators. The salient-pole rotor shown in figure 3-4, view B, is used in low-speed alternators. The salient-pole rotor often consists of several separately wound pole pieces, bolted to the frame of the rotor. If you could compare the physical size of the two types of rotors with the same electrical characteristics, you would see that the salient-pole rotor would have a greater diameter. At the same number of revolutions per minute, it has a greater centrifugal force than does the turbine-driven rotor. To


Electrical News
Friday Quiz: Oscilloscopes
So, you use an oscilloscope every day? Well then, you...
eetimes.com
Inventables X-Carve LIVE Build Part 3 + Batteriser Rant
Part 3 of Dave & David2 assembling the Inventables X-Carve...
eevblog.com
Inventables X-Carve Time Lapse Build
Time lapse footage of Dave & David 2 assembled the...
eevblog.com
Samsung's Slippage Stirs Smartphone Angst
Samsung's downbeat outlook is stirring up worries over the global...
eetimes.com
Patents: Exercises in Futility and Incomprehensibility?
Learning anything from patent documents has to be one of...
eetimes.com
The Best Way to Store Morse Code in C
In which we compare two approaches to store and manipulate...
eetimes.com
Test is not someone else's problem
You can reduce production time and cost if you create...
eetimes.com
NXP Touts Mixed Signal, Auto Gains
NXP Semiconductors' financial results for the second quarter of 2015...
eetimes.com
Graphene Lights Up Chips
A group of national and international researchers have demonstrated an...
eetimes.com
Independent Board Members: The Outsiders With an "In"
Being a member of the board of a hot young...
eetimes.com
Mythbusters Tests Killer Drones
See what the team on Discovery Communications' TV series Mythbusters...
eetimes.com
CERN Taps Brocade For SDN
The legendary particle physics lab will use Brocade's OpenDaylight-based SDN...
eetimes.com
Agile Design for Hardware, Part II
In the second of a three-part series, two Berkeley professors...
eetimes.com
Smarter Sensor Hub Cuts Power
QuickLogic has a new sensor hub Eos, named after the...
eetimes.com
Windows 10 Mobile: Why Microsoft Is Confident
Windows 10 for smartphones is essentially feature complete, says Microsoft,...
eetimes.com
Samsung SE370 Monitor Boasts Wireless Charging Capability
No stranger to innovative products, Samsung launches the SE370 monitor,...
eetimes.com
EEVblog #773 – 80W INDUAL LED Light Teardown
Teardown of the new INDUAL 80W industrial LED high bay...
eevblog.com
eBook Explains Faster In-System Flash Programming
"Faster Flash Programming via FPGA and IJTAG" from ASSET Intertech...
eetimes.com
Quantum Computing: Diode-like Breakthrough Surmounts Roadblock
Quantum computers need a component like a diode, that only...
eetimes.com
There's No Shame in ReRAM
Intel and Micron say they've developed a new class of...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +