Recent content by anon6912

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    Engineering Confusing circuit analysis question

    Thank you. That clarified my doubt
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    Engineering Confusing circuit analysis question

    Hi I have the following situation: (Please see attached pic) I want to know if equation (4) i have written is correct. What is confusing me is that, I remember being told in circuit analysis that each energy storage element should have its own state variable. But in this situation when I...
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    Equations for three inductors connected together

    Thanks. I ended up integrating kirchhoff law and it worked :)
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    Equations for three inductors connected together

    At the time I was asking this question I don't think I had grasped the question correctly even myself. What I initially wanted was to eliminate V_T. But as a consequence of doing this I found out I had to/ could write I_1 in terms of I2 and I3. I wasn't sure if this second part of replacing...
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    Equations for three inductors connected together

    I have a system with three inductors connected together at a common point. The unconnected ends of each inductor is connected to an independent voltage source. Basically I want to get three expressions for the dynamics of the currents with V1, V2 and V3 as inputs. i.e. i need to eliminate the...
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    Trying to understand two masses connected by a shaft

    I have the following system I got from a book, which models the dynamics of two masses connected by a shaft. The system is given below: And the equations given in the book for this system is below: The nominal speed is w0. And the interest here is the deviations from the nominal for mass...
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    Understanding a PLL: Determine H(s) from Transfer Functions

    I'm trying to implement a basic PLL. The diagram is given as follows: Where the transfer functions are given as follows: To implement the PLL I need it to be as follows: How do I determine H(s) from the transfer functions that are given? Thank you for your help
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    Calculating the reactive power of a transmission line

    Thanks a lot. That vector diagram makes makes sense :)
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    Calculating the reactive power of a transmission line

    Ok but I am still confused: a. Its an inductive line how can it be capacitive? (is it capacitive because the terminal voltage magnitudes are the same?) b. and how/why does the effect of the resistance have such a huge impact on the value of Q? b.1 Does the incusion of the...
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    Calculating the reactive power of a transmission line

    Hey yeah, could you move it if you don't mind :) Thanks
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    Calculating the reactive power of a transmission line

    Did you include the resistance in your calculation or no?
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    Calculating the reactive power of a transmission line

    I have a single machine connected to an infinite bus with the following parameters: - Sending end power = 3.75MW - RL=5.18 ohms - XL=130 ohms - VS (Generator bus)=161kV - VR (Infinite bus)=161kV - Sending end voltage angle (delta) = 0.01877 (Angle which allows 3.75MW to be transferred)...
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    What is a positive sequence model of an induction machine?

    I'm trying to understand a 3 phase induction machine model used as a generator in a Doubly Fed Induction Generator (DFIG) arrangement in Simulink. In this model for the induction generator component, they have stated that the model is a "Positive sequence model" of the induction generator...
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    Transitioning from engineering to physics

    So i just finished my bachelors last year in electrical engineering with honours. However, I have been thinking about it for a while and my real passion is for a career in physics. Would I be able to sign up for a post grad physics course in USA/Canada or in Australia? Thanks
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    Understanding Base Value Calculations: Line vs Phase Voltage Explained"

    When calculating base values for current, impedance etc do we use the line to line voltage or the phase voltage? What's the reason for using one over the other?
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