Quantcast Figure 3-3.Ac generator pictorial and schematic drawings

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
3-5 Figure 3-3.—Ac generator pictorial and schematic drawings. The exciter is a dc, shunt-wound, self-excited generator. The exciter shunt field (2) creates an area of intense magnetic flux between its poles. When the exciter armature (3) is rotated in the exciter-field flux, voltage is induced in the exciter armature windings. The output from the exciter commutator (4) is connected through brushes and slip rings (5) to the alternator field. Since this is direct current already converted by the exciter commutator, the current always flows in one direction through the alternator field (6). Thus, a fixed-polarity magnetic field is maintained at all times in the alternator field windings. When the alternator field is rotated, its magnetic flux is passed through and across the alternator armature windings (7). The armature is wound for a three-phase output, which will be covered later in this chapter. Remember, a voltage is induced in a conductor if it is stationary and a magnetic field is passed across the conductor, the same as if the field is stationary and the conductor is moved. The alternating voltage in the ac generator armature windings is connected through fixed terminals to the ac load. Q5.   Most large alternators have a small dc generator built into them. What is its purpose?


Electrical News
Want a Free GPAK4 Mixed-Signal FPGA Development Kit From Silego?
25 GPAK4 mixed-signal FPGA development kits will be given by...
eetimes.com
IMB-GlobalFoundaries Deal Finalized
Following final approval by U.S. regulators, IBM closed the sale...
eetimes.com
20% Discount for ESC Silicon Valley 2015 Using Secret Code
Max's top-secret-squirrel code for the forthcoming ESC Silicon Valley 2015...
eetimes.com
UWAS: Playing Hide and Seek with Drones
The Paris Air Show (June 15-21) was rich in drone...
eetimes.com
AWS Building Massive Data Center In India
AWS is planning to build a massive data center in...
eetimes.com
Nanogenerator Harvests Energy From Rolling Tires
Researchers at the University of Wisconsin-Madison (Madison, WI) have developed...
eetimes.com
ZF Sets Course to Driver Assistance
Having just completed the takeover of TRW Automotive, mechatronics giant...
eetimes.com
EEVblog #761 – Pebble Time Smartwatch Teardown
What’s inside the new Pebble Time Smartwatch? Dave does a...
eevblog.com
EEVblog #760 – Pebble Time Smartwatch Torture Test!
Dave takes the new Pebble Time Smartwatch through the 2015...
eevblog.com
USB Protocol Analyzers Show What's Under the Bus
Get an overview of what's available for troubleshooting and characterizing...
eetimes.com
Do Head-Up Displays Lead the Wrong Way to Safety?
In vehicles, head-up displays (HUDs) have been developed to reduce...
eetimes.com
UC San Diego Researchers Amp Up Internet Speeds
Researchers at UC San Diego have blown through expected limits...
eetimes.com
RISC vs CISC: What's the Difference?
A new study comparing the Intel X86, the ARM and...
eetimes.com
MotorMood for socially aware driving
Here is cool idea: use a light-up smiley face that...
wsnblog.com
Calling all Time Lords
2015 is a wonderful year for anyone who has a...
eetimes.com
Talking Sheets, Thinking Shorts
The tagging of garments via RFID-based labels has been commonplace...
eetimes.com
Ericsson Layoffs Target R&D, Supply
Ericsson will release 10% of its Swedish workforce as part...
eetimes.com
Sneak Peak! RTOS Smackdown at ESC Silicon Valley 2015
At ESC Silicon Valley, seven of the leanest, meanest, coolest,...
eetimes.com
Merck Buys Display Quantum Dot Company
Merck KGaA (Darmstadt, Germany) has announced it is acquiring Qlight...
eetimes.com
Bringing More Affinity and Testability to Multicore
To make its affinity-based RTOS scheduling algorithm for multicore software...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

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

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