Power control - motor control , Electrical Engineering

Assignment Help:

Power Control

A chopper converts  fixed  de input voltage to a controllable dc output voltage. It is  the single  stage dc to dc conversion device. It is a high  speed  on/ off  semiconductor switch. The  control of a dc series motor. When  the chopper is ON ( this is  ON period it means chopper  switch  is closed) for the  period Ton  output voltage Vo ( which  is then applied to dc series motor) is equal  to source  voltages.

Vs in this  period  the inductance of armature winding  will store the energy. When the chopper is OFF for period Toff ( it  means chopper  switch  is Opened)  output  voltage  will be zero  but armature current will be  flowing  through  freewheeling  diode FD series fields  and armature.

1708_Power Control.PNG

                                       Figure voltage and current waveforms of a chopper controlled dc series motor

Therefore  the output  voltage  can be controlled  by varying duty  cycle α hence the speed  of dc  series motor  can be  controlled.

 

 


Related Discussions:- Power control - motor control

Basic principles of electrical engineering, What is ideal and real sources?...

What is ideal and real sources? Source conversion? Nodal voltage method for d.c circuit?

What is a differentiator circuit, Q. What is a differentiator circuit? ...

Q. What is a differentiator circuit? By introducing electrical reactance into the feedback loops of op-amp amplifier circuits, we can cause the output to respond to changes in

For the nor and inverter realizations, Q. For the NOR and inverter realizat...

Q. For the NOR and inverter realizations shown in Figure, find the truth table, the type of gate realized, and the expression for the logic output, in each case.

Transformers, determine the efficience of a 16 KVA transformer for the full...

determine the efficience of a 16 KVA transformer for the full-load,unit power factor

ADC and DAC design, I''m trying to design ADC using MAX1198 and DAC using I...

I''m trying to design ADC using MAX1198 and DAC using IDAC in Multisim 12 but none of them are working. I need some help in this regard

Circuit theory, contribution of circuit theory on the health and quality of...

contribution of circuit theory on the health and quality of life of the citizen

TTL NAND gate, Q. Explain working of TTL NAND gate? The TTL logic famil...

Q. Explain working of TTL NAND gate? The TTL logic family uses only transistors instead of a combination of transistors and diodes. TTL has the same high and low ranges as DTL.

Electromechanical meters, Electromechanical Meters Electromechanical e...

Electromechanical Meters Electromechanical energy meters are based on the Ferraris Principle (see note in the margin). The working of these meters is explained. Working o

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