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    Assignment No. 3: Fall 2022 Department of Electrical Engineering Karachi Campus

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    SYED ALIYYAN IMRAN ALI
    The document provides instructions for Assignment No. 3 for the Electrical Machine course. It asks students to design a system to operate a 60kW load at 180Hz using a 30kW wound-rotor motor rated for 60Hz and 880rpm. Students must determine the utility grid power demand and induction motor rating needed for the frequency converter. They must validate the design through simulation and write a report analyzing the torque-speed characteristics and determining if the frequency converter will overheat. The assignment aims to develop skills in complex problem solving and analysis.

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    Assignment No. 3: Fall 2022 Department of Electrical Engineering Karachi Campus

    Uploaded by

    SYED ALIYYAN IMRAN ALI
    21 views2 pages
    The document provides instructions for Assignment No. 3 for the Electrical Machine course. It asks students to design a system to operate a 60kW load at 180Hz using a 30kW wound-rotor motor rated for 60Hz and 880rpm. Students must determine the utility grid power demand and induction motor rating needed for the frequency converter. They must validate the design through simulation and write a report analyzing the torque-speed characteristics and determining if the frequency converter will overheat. The assignment aims to develop skills in complex problem solving and analysis.

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    Original Title

    EM-A3-08122022-104137am

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    The document provides instructions for Assignment No. 3 for the Electrical Machine course. It asks students to design a system to operate a 60kW load at 180Hz using a 30kW wound-rotor motor rated for 60Hz and 880rpm. Students must determine the utility grid power demand and induction motor rating needed for the frequency converter. They must validate the design through simulation and write a report analyzing the torque-speed characteristics and determining if the frequency converter will overheat. The assignment aims to develop skills in complex problem solving and analysis.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    21 views2 pages

    Assignment No. 3: Fall 2022 Department of Electrical Engineering Karachi Campus

    Uploaded by

    SYED ALIYYAN IMRAN ALI
    The document provides instructions for Assignment No. 3 for the Electrical Machine course. It asks students to design a system to operate a 60kW load at 180Hz using a 30kW wound-rotor motor rated for 60Hz and 880rpm. Students must determine the utility grid power demand and induction motor rating needed for the frequency converter. They must validate the design through simulation and write a report analyzing the torque-speed characteristics and determining if the frequency converter will overheat. The assignment aims to develop skills in complex problem solving and analysis.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    Fall 2022

    Department of Electrical Engineering


    Karachi Campus

    ASSIGNMENT No. 3

    Course Title: Electrical Machine Course Code: EEN-219


    Class: BEE – 5B CLO: 3
    Course Instructor: DR. MUHAMMAD RAZA Date: 08-Dec-2022
    Due Date: 09-Jan-2022 Max. Marks: 20 Points

    INSTRUCTIONS

    1. Attempt all questions


    2. This is an individual effort task
    3. Assignment should be done only on A4 size paper
    4. Assignment should be submitted on LMS in due time.
    5. Individual Viva will be taken after assignment submission

    The assignment is designed in a way to enable students to solve the complex engineering problem.
    Following characteristics of complex engineering problem are targeted.

    WP 1 Depth of Knowledge Required

    WP 3 Depth of Analysis Required

    Objective:

    Design the system to operate the load of 60kW at 180 Hz using wound-rotor motor of rated 30kW
    power, 60Hz and 880rpm.

    System Description:

    A conventional wound rotor motor may be used as a frequency converter to generate a frequency
    different from that of utility company. The stator of the wound-rotor machine is connected to the
    utility line, and the rotor is driven at an appropriate speed by a squirrel cage induction motor as
    shown in Figure 1.
    Considering the supply line frequency as 60Hz and 110Vrms, it is required to determine the power
    demand from the utility grid and the rating of the squirrel cage induction motor.
    Validate the design by performing the simulation in Simscape or any other software suitable for
    analysis. The analysis should contain the information of motor selection and frequency converter
    (F) such as the speed of the induction motor (M) to drive the frequency converter, the power of the
    induction motor (M), active power delivered to the stator of the frequency converter.
    Will the frequency converter overheat under these conditions?
    Write a detail report that must present the torque speed characteristics of the motors.
    Fall 2022
    Department of Electrical Engineering
    Karachi Campus

    Figure 1
    Assessment Rubrics:
    The assignment will be evaluated according to the following grading rubrics.

    Components Unsatisfactory Satisfactory Good Marks


    (0.0 – 2.5) (2.5 – 4.0) (4.0 – 5.0)
    Demonstrates an Demonstrates a Demonstrate the
    inability in limited ability in ability to construct a
    identifying a identifying a problem statement
    Problem
    problem statement problem statement with evidence of
    Understanding
    and solution. and solution. most relevant
    contextual factors,
    and solution.
    Unsatisfactory Implements the Implements the
    understanding of basic structure of the model correctly
    Simulation using simulation problem but could according to given
    Implementation tool for problem not model the problem.
    analysis. required system.

    Could not present Analysis is Results and analysis


    Analysis/ the analysis and the performed but are acceptable.
    Results results are incorrect. results are incorrect.
    Inappropriate Overview stated A clear overview
    content of several somewhat, was provided, key
    Report Quality sections of report, significant results results clearly stated
    missing or not included in the in the conclusions in
    inaccurate results conclusion a summary fashion

    Student Names: ____________________________

    Enrollment No: ____________________________

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