Quantcast CLASSIFICATION OF GENERATORS

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
1-16 the field coils causes a small field current. Although small, this field current strengthens the magnetic field and allows the armature to generate a higher voltage. The higher voltage increases the field strength, and so on. This process continues until the output voltage reaches the rated output of the generator. CLASSIFICATION OF GENERATORS Self-excited generators are classed according to the type of field connection they use. There are three general types of field connections — SERIES-WOUND, SHUNT-WOUND (parallel), and COMPOUND-WOUND. Compound-wound generators are further classified as cumulative-compound and differential-compound. These last two classifications are not discussed in this chapter. Series-Wound Generator In the series-wound generator, shown in figure 1-15, the field windings are connected in series with the armature. Current that flows in the armature flows through the external circuit and through the field windings. The external circuit connected to the generator is called the load circuit. Figure 1-15.—Series-wound generator. A series-wound generator uses very low resistance field coils, which consist of a few turns of large diameter wire. The voltage output increases as the load circuit starts drawing more current. Under low-load current conditions, the current that flows in the load and through the generator is small. Since small current means that a small magnetic field is set up by the field poles, only a small voltage is induced in the armature. If the resistance of the load decreases, the load current increases. Under this condition, more current flows through the field. This increases the magnetic field and increases the output voltage. A series-wound dc generator has the characteristic that the output voltage varies with load current. This is undesirable in most applications. For this reason, this type of generator is rarely used in everyday practice. The series-wound generator has provided an easy method to introduce you to the subject of self- excited generators.


Electrical News
eevBLAB #9 – Meet Dave
Meet Dave2, the first EEVblog employee....
eevblog.com
Qualcomm to Leverage Monolithic 3D for Smartphones
Qualcomm is looking to leverage Monolithic 3D IC technology to...
eetimes.com
Full Human Head Transplant May Be Closer Than You Think
Suddenly, some of the things we read in science fiction...
eetimes.com
Automotive Chip Reliability: A Matter of Design Methods
Up to 90% of all innovations today are generated through...
eetimes.com
Paper Memory Ready to Roll
Researchers at the Finish VTT Technical Research Centre have demonstrated...
eetimes.com
Top 10 Robotics Projects on Kickstarter
EBN takes a look at the newest robots coming down...
eetimes.com
Moore's Law: Dead or Alive
Moore's law is still alive and kicking after 50 years,...
eetimes.com
'Connected Home' Key to Intel's Lantiq Deal
Intel has formed a freshly minted "Connected Home Division," which...
eetimes.com
When Coding Errors Can Kill
Under a mild-sounding title, software safety expert Sean Beatty will...
eetimes.com
When Coding Errors Can Kill
Under a mild-sounding title, software safety expert Sean Beatty will...
eetimes.com
Friday Quiz: Power Circuits & Measurements
Learn from power-integrity expert Steve Sandler through his thoughtful questions...
eetimes.com
Vision for Machinery Becoming More Affordable
Machines that can see and act on that information are...
eetimes.com
Tiny Pacemaker for Tiny People
Micropacemaker is but another example of the how the trend...
eetimes.com
Rocket Fuels Student Space Dreams
Boston students hope to break records by launching a homegrown...
eetimes.com
Medtronic Wins EU Approval for Leadless Pacemaker
The approval comes a year and a half after St....
eetimes.com
Five Fascinating Power Facts About Supercomputers
Thought you knew everything about supercomputers - those almost unimaginably...
eetimes.com
EEVblog #734 – Giroptic 360cam Kickstarter Prototype
Dave takes a quick look at the first run Kickstarter...
eevblog.com
How Tesla Disrupts Infotainment Supply Chain
Automaker Tesla moves away from Tier-One designers on infotainment and...
eetimes.com
TSMC Cuts Capex by $1 Billion
Taiwan Semiconductor Manufacturing Co. (TSMC) is cutting its planned capital...
eetimes.com
Odds of Success of Mie Fujitsu, Japan's Pure-Play Foundry
Mie Fujitsu Semiconductor is a foundry born from Fujitsu's lack...
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 +