Armature winding - motor control , Electrical Engineering

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.


Posted Date: 4/3/2013 2:09:15 AM | Location : United States

Related Discussions:- Armature winding - motor control , Assignment Help, Ask Question on Armature winding - motor control , Get Answer, Expert's Help, Armature winding - motor control Discussions

Write discussion on Armature winding - motor control
Your posts are moderated
Related Questions
What is reading mechanism of a 3 phase meter?

i need help for my final year project, and i will really appreciate if you can assist me as soon as possible

Working of Hartley oscillator : When the collector supply voltage Vcc is switched on, the capictor gets charged. The capacitor discharges through the inductor, setting up oscil

Q. What do you mean by Star Topology? Star Topology: In Star topology, all user nodes are connected to central node point that interconnects all individual users' links and nod

Define the term Paging Unit. Paging Unit: The paging mechanism functions along with 4K - byte memory pages or along with a new extension obtainable to the Pentium with 4M byt

Q. If a feeder circuit-breaker trips, what action is needed? Ans: First isolate the faulty feeder check the faulty area on which fault the breaker was tripped (open circuit,

With respect to serial communication define the half duplex. Half Duplex Transmission: A channel of half duplex can send and receive, but not at same time. It's like a one-la

Q. For the circuit of Figure, determine and sketch i L (t) and vC(t) for inductance values of (a)3/4 H, (b) 2/3 H, and (c) 3/17 H. Note that the inductance values are chosen her

What are Shift Register Counters? Two of the main common types of shift register counters are the Ring counter and the Johnson counter and They are basically shift registers wi

Charge Carriers in Semiconductors In a metal, the atoms are imbedded in a "sea" of free electrons, and these electrons can move as a group under the influence of an