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Monday, July 13, 2009

Improving Power factor of an Induction motor drive using Labview

Improving Power factor of an Induction motor drive using Labview
Virtual instrumentation deals with acquiring, analysing and presenting data. It offers more flexibility than traditional instruments and proves to be ideal for signal processing and simulation. It is popularly used due to its graphical nature, versatility and easy programmability. The program can be changed at any point of time according to the needs of the user.
A project which deals with the power factor determination and correction of a lagging power factor load such as Induction motor drive is discussed here. A three phase Induction motor is used as the load which normally draws lagging current. The current and voltage waveforms are obtained through current and potential transformers from the line side respectively. The sinusoidal waveform is given to zero crossing detector to produce square waveform which is then given to X-Or gate. This produces a signal which is nothing but the difference of the phase angle between current and voltage waveforms. The signal is then fed to the PC using DAQ (Data Acquisition) card. After acquiring the signal, the power factor is calculated using Lab view software and depending on whether leading or lagging, a pulse is generated. This pulse is used through DAQ card to correct the capacitance value on the line in order to improve the power factor

5 comments:

Shivam said...

sir ,
i wanted some projects on labview
if u have some plz plz send me some on my id .
sr3627@gmail.com
shivam007007@yahoo.com..
thankyou
shivam.
student of applied electronics & instrumentation. 7th sem..

kanai said...

im doing my msc.in second yr. like to do project in field of power electronics using labview,please please send me more details about this project at
cheptora@yahoo.com
thanks in advance

seenivasan k said...

sir i am doing this project plz send more detals seenivasan.k187@gmail.com. It's importan for me sir

Karthi Devil said...

Pls this project full details and cost details vaynum quick

Karthi Devil said...

Pls this project full details and cost details vaynum quick

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