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
EEVblog #656 – Pacemaker Monitor Teardown
What’s inside a dial-in pacemaker monitor system? Datasheets: LMV824 MAX4330...
eevblog.com
Getting Your First Sales Pick Right
A company needs to create a repeatable sales process to...
eetimes.com
The People Who Created Our Jobs
Without the likes of Ohm, Faraday, Henry, and many others,...
eetimes.com
Mobile Engineering: 10 Cheap, Mostly Android Apps
Whether Android- or Apple-based, your mobile phone can be an...
eetimes.com
Brazil's Path to Hardware Manufacturing at Home
John Hall, president of the Linux Foundation, lays out a...
eetimes.com
Fairchild to Close 2 Manufacturing Facilities
Fairchild is eliminating its internal 5-in wafer fabrication lines and...
eetimes.com
JEDEC Unveils Low-Power Memory Standard
JEDEC published its LPDDR4 specification, which, with a redesigned architecture,...
eetimes.com
SanDisk Bullish on SSD Adoption
Ultra II is aimed at consumers looking to upgrade HDD...
eetimes.com
Live Chat Wednesday, Aug. 27: Is iPhone Relevant?
Join industry analysts and EE Times editors for a live...
eetimes.com
Live Chat Wednesday, Aug. 27: Is iPhone Relevant?
Join industry analysts and EE Times editors for a live...
eetimes.com
Digital Light Projectors Downsize & Diversify
Digital light projectors (DLPs) were used in the first and...
eetimes.com
Memory Design Articles: DDR4, LRDIMMs, MBIST, Embedded Flash
A roundup and summary of memory design articles across the...
eetimes.com
IoT Needs Open Discovery Scheme
The Internet of Things will require an open-source self-classification scheme...
eetimes.com
US Launches Smart Cities Effort
The US has launched a challenge to municipal governments around...
eetimes.com
Bitcoin Bill Begs Questions
A California law passed in late June attempted to legalize...
eetimes.com
Breadboard for Lunch, Conclusion
In the conclusion, you'll see why there's a difference between...
eetimes.com
Intel Shrinks 3G Chip for IoT
Intel's latest modem for the mobile Internet of Things, the...
eetimes.com
Google Glass & Lookalikes Find Niches
Google Glass, Recon Jet, and Epson Moverio have been solutions...
eetimes.com
Murata to Buy RF IC Vendor Peregrine for $471M
Passive component powerhouse, Japan's Murata Manufacturing Co. Ltd., has taken...
eetimes.com
NAND, DRAM 3D-Transition Roadmaps
IC Insights has done its best to encapsulate the latest...
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 +