Armature winding - motor control , Electrical Engineering

Assignment Help:

Armature Winding

In this  winding the working  emf is induced by the working  flux.

The current  which is  dependent on the load  called current.  The windings  that handles only exciting current  is called  field winding. Current in fields  windings is  always DC. It is also  known  as fields current  of magnetizing current. It  produces only a working  magnetic  flux. It is independent to load. Armature winding  carries only  load current.

Before  discussing the  methods  of speed  control  of DC  motor  it is important to know about  the classification of DC  motor. According to  excitation of the  filed self excited DC motor further  divided  into three types Dc series motor  shunt  motor and DC compound  motor.

965_armature winding.PNG

                                                              Figure  DC Motor Separately excited(b)  Shunt (c) Series (d) Compound

The commonly used DC  motors  are shown  in  separately excited  motor the  field and armature voltage  can be controlled independent of each other. In  a shunt  motor field and armature are connected common  source. In case of  a series  motor fields current is  some as armature current and  therefore  fields flux  is a functions  of armature current. In  a compound motor  the mmf  of the  series  fields is  a functions  of armature current  and is in the  same direction as  mmf  of the shunt  fields.

For  separately excited and  shunt motors it is equal to  the resistance of armature  windings  and for series  and compound motors it is the sum of armature and fields  winding resistances.

 


Related Discussions:- Armature winding - motor control

Circuit theory, i want circuit theory relavant assingment sir please immed...

i want circuit theory relavant assingment sir please immediately

Digital logic circuits, . In successive-approximation A/D converter, offset...

. In successive-approximation A/D converter, offset voltage equal to 1/2LSB is added to theD/A converter’s output. This is done to

Differentiate between limiting and known errors, Q.   With suitable example...

Q.   With suitable examples differentiate between limiting and known errors. Sol. Limiting Errors (Guarantee Errors): The accuracy and precision of an instrument depends upon

Techniques and resources in problem base learning, Techniques and resources...

Techniques and resources Different techniques and resources were used in different areas of the problem during the course of the project. The most important of them was th

Computer-aided circuit analysis using MATLAB, Q. Computer-aided circuit ana...

Q. Computer-aided circuit analysis using MATLAB ? This text does not teach MATLAB; it assumes that the student is familiar with it through previous work. Also, the book does no

Factors of contributing to losses in service cables, Factors of Contributin...

Factors of Contributing to Losses in Service Cables 1. Tapping of underground service cables: The service cables must be visible so that tapping of cables can be detected. U

Explain sahf instructions in 8086 family, Explain SAHF instructions in 80...

Explain SAHF instructions in 8086 family with example and their effect on flag. SAHF: Store AH register in flag register, this is an instruction utilized to store the data i

Network analysis, expain how to do proper initial approximatio for the give...

expain how to do proper initial approximatio for the given cct....... by a example

Scr, What is finger voltage in a scr?

What is finger voltage in a scr?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd