Real Solutions for Power Systems, Not Just Theories
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OBphasor icon
OBphasor
Calculator for electrical engineering
Download for free
  • Useful tool for each electrical engineer
  • It doesn't require installation on computer, consequently, it does not modify the operating system registry
  • You have just to download the ZIP file on your computer
  • Unzip the downloaded file and use directly the application "OBphasor.exe"
  • It works on all versions of Windows operating system: Windows XP, Windows Vista, Windows7, Windows8, Windows10
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OBphasor - Calculator for electrical engineering

What is it about?

The existing programming environments assure not only the computerization, but also the reconsideration of the onset mode of some calculus types. The identification of physical objects as mathematical objects, which express their properties in an abstract form, has become a natural trend. Besides the data types existing in the numbers theory, the high level programming languages allow the definition of new artificial data types, i.e. abstract data types ( read more here >> ).

It is possible to represent a sinusoidal quantity through two real numbers in two manners:
  • a phasor (rotating vector): with module (V) and angle (phase, θ)
  • a complex number: with real part (a) and imaginary part (b)

  • Pareto front

    The mathematical model for complex quantities as abstract data types, containing the domain, the operations set and further information, is given ( here >> ). The defined mathematical structures were implemented as objects in an original software which allows manipulating complex quantities by directly using of common operators like "+", "-", "*" and "/".

    Short presentation of the program.

    Pareto front

    For any electric quantity (A, B, ..., L), we can assign a complex numerical value (RE, IM) or a relationship (written into the edit line).

    How it works? A practical example for electrical engineering.

    Suppose that we know, for an electric power line, both impedances, positive sequence (Z1) and zero sequence (Z0):
    Z0 = 27.21+j106.61 (Ohm) --> object C
    Z1 = 11.04 + j31.51 (Ohm) --> object D
    OBsin


    We can compute the earth-return compensation factor: K0 = (Z0-Z1) / (Z1*3) by writing the required relationships in the edit lines of objects E, F and G. Click on RUN button.
    OBsin



    K0 = 0.7610 - j 0.0956 --> object G (as a complex number)

    We can see K0 as a phasor too --> Move the value of G in Input Output panel and click on radio button (module, angle).
    OBsin



    K0 = 0.7670 /_ 7.1602 deg.

    Read also:
  • Data Sheet
  • Blog




  • Download for free
    OBphasor program is fully for free.
    Also, any support is welcome.

    Steady state estimation for unbalanced and harmonic polluted distribution systems
  • Suitable for real power distribution systems
  • Supports distributed generators and microgrids
  • Click here for more details >>
    IEEE

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    © 2016 by Bogdan Tomoiaga

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