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    EE 205 Circuit Theory Lab 4 3-Phase Balanced Circuit Analysis

    Uploaded by

    Gürhan Bekar
    This lab aims to analyze a 3-phase balanced YY connection circuit using Proteus simulations. Students will draw the circuit, set values for the voltage source and induction motor, and measure line voltages, currents, and power. Key steps include running the simulation for 3-4 minutes, observing voltage amplitudes and angles between phases, and plotting instantaneous power graphs to calculate average power per phase and total average power. Results will be recorded in tables to verify calculations match measurements from the simulation.

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    EE 205 Circuit Theory Lab 4 3-Phase Balanced Circuit Analysis

    Uploaded by

    Gürhan Bekar
    44 views3 pages
    This lab aims to analyze a 3-phase balanced YY connection circuit using Proteus simulations. Students will draw the circuit, set values for the voltage source and induction motor, and measure line voltages, currents, and power. Key steps include running the simulation for 3-4 minutes, observing voltage amplitudes and angles between phases, and plotting instantaneous power graphs to calculate average power per phase and total average power. Results will be recorded in tables to verify calculations match measurements from the simulation.

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    EE206 Lab4

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    This lab aims to analyze a 3-phase balanced YY connection circuit using Proteus simulations. Students will draw the circuit, set values for the voltage source and induction motor, and measure line voltages, currents, and power. Key steps include running the simulation for 3-4 minutes, observing voltage amplitudes and angles between phases, and plotting instantaneous power graphs to calculate average power per phase and total average power. Results will be recorded in tables to verify calculations match measurements from the simulation.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    44 views3 pages

    EE 205 Circuit Theory Lab 4 3-Phase Balanced Circuit Analysis

    Uploaded by

    Gürhan Bekar
    This lab aims to analyze a 3-phase balanced YY connection circuit using Proteus simulations. Students will draw the circuit, set values for the voltage source and induction motor, and measure line voltages, currents, and power. Key steps include running the simulation for 3-4 minutes, observing voltage amplitudes and angles between phases, and plotting instantaneous power graphs to calculate average power per phase and total average power. Results will be recorded in tables to verify calculations match measurements from the simulation.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
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    EE 205 Circuit Theory

    Lab 4

    3-Phase Balanced Circuit Analysis

    The aim of this lab is 3-phase balanced YY connection circuit.

    Consider the example circuit given below. We have already solved this question in the previous lecture. Here, we
    want to verify the calculated results with the Proteus simulations. First we will analyze voltages and currents.
    Procedure:
    1. Draw the following circuit:
    Remember the values for the inductors have to evaluated beforehand.

    Fig.2. Circuit schematics

    2. Place a 3 phase voltage source and 3 phase induction motor.


    3. Place an AC amp-meter in series with the circuit.
    4. Set the sum of the generator and line impedances inside the 3 phase voltage source as “line resistance and
    inductance”.
    5. Set the load resistance and inductance for the motor.
    6. Connect and oscilloscope at three phase load terminals. You may use dynamic terminals to eliminate wire
    congestion.
    7. Run the simulation.
    8. Observe the “line to neutral voltage” amplitudes and fill the table below. Do not consider their angles with
    respect to the generator. Just observe the angle difference between each pair of voltages.
    9. As the motor rotates, it takes time for the speed to build up. Thus, you must wait for about 3-4 min. Only
    then you can measure the current amplitude. Do not consider its phase. Alternatively, you may use graphs
    to plot the line currents. This takes shorter, however, you must set the simulation time to start from 240 sec.
    or 300 sec.

    Table 1. Voltage and Current Amplitudes


    VA amplitude VA amplitude Angle between VA, VB Single line current
    (calculated) (measured) and VC Amplitude
    (measured) (measured)
    115V
    Power Calculations:
    Consider the following example.

    Procedure: Plot the instantaneous power p=VA*IA graph, and fill the table.

    Table 2. Average power measurements


    Average power Average power Total average power Single line current
    Per phase Per phase (measured) Amplitude
    (calculated) (measured) (measured)
    224 W

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