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ELT3140 Motors

Advanced · 1 credit · TMT - Trades, Manufacturing and Transportation

Description
Students demonstrate knowledge of electric motor operation and loading characteristics.
Prerequisite
None
Parameters
Access to single-phase alternating current (AC) motor and direct current (DC) motors and related resources. Note: The student must have access to instruction from an individual with electrical technologist or journeyperson status when students are performing practical components other than low voltage.
Supporting courses
ELT2080: Control Systems 2 ELT2130: Magnetic Control Devices ELT3040: Generation/Transformation

Outcomes The student will:

  • 1 explain electromotive principles as applied to DC and single-phase AC motors

    • 1.1 explain and demonstrate motor principles including:

      • 1.1.1 counter electromotive force (EMF)

      • 1.1.2 inductance

      • 1.1.3 conductive resistance

    • 1.2 describe and explain characteristics of the following AC and DC motors:

      • 1.2.1 shaded pole

      • 1.2.2 split phase

      • 1.2.3 capacitor start and run

      • 1.2.4 three-phase

      • 1.2.5 universal

      • 1.2.6 single-phase synchronous

      • 1.2.7 stepper

      • 1.2.8 servo

      • 1.2.9 permanent magnet

    • 1.3 describe methods of DC motor control including:

      • 1.3.1 pulse width modulations

      • 1.3.2 positional feedback/shaft encoding

  • 2 explain the operational characteristics of common DC and AC motors

    • 2.1 explain the following nameplate ratings:

      • 2.1.1 voltage

      • 2.1.2 current

      • 2.1.3 horsepower

      • 2.1.4 efficiency

      • 2.1.5 cycle

      • 2.1.6 revolutions per minute (RPM)

      • 2.1.7 phase

      • 2.1.8 frame size

      • 2.1.9 enclosure

  • 3 set up selected DC and AC motors and demonstrate their loading characteristics

    • 3.1 design and construct the following motor circuits to find torque versus load and speed regulation versus load on:

      • 3.1.1 inductive motors including: split phase, capacitor start, permanent split capacitor, shaded pole, three-phase

      • 3.1.2 brush motors including: universal, flat compound DC motor

      • 3.1.3 others including: single-phase synchronous, stepper, servo, permanent magnet

  • 4 demonstrate established laboratory procedures and safe work practices

    • 4.1 identify and follow safe wiring practices

    • 4.2 use protection devices for all circuits

    • 4.3 describe dangers of shaft rotation regarding:

      • 4.3.1 vibration

      • 4.3.2 long hair

      • 4.3.3 clothing

      • 4.3.4 jewelry

  • 5 demonstrate basic competencies

    • 5.1 demonstrate fundamental skills to:

      • 5.1.1 communicate

      • 5.1.2 manage information

      • 5.1.3 use numbers

      • 5.1.4 think and solve problems

    • 5.2 demonstrate personal management skills to:

      • 5.2.1 demonstrate positive attitudes and behaviours

      • 5.2.2 be responsible

      • 5.2.3 be adaptable

      • 5.2.4 learn continuously

      • 5.2.5 work safely

    • 5.3 demonstrate teamwork skills to:

      • 5.3.1 work with others

      • 5.3.2 participate in projects and tasks

  • 6 create a transitional strategy to accommodate personal changes and build personal values

    • 6.1 identify short-term and long-term goals

    • 6.2 identify steps to achieve goals

Program of Studies 2009. Source document, © Alberta Education.