Electrical Machinery 2

Course Information

College Anan College Year 2024
Course Title Electrical Machinery 2
Course Code 1314E01 Course Category Specialized / Compulsory
Class Format Lecture Credits Academic Credit: 2
Department Course of Electrical Engineering Student Grade 4th
Term First Semester Classes per Week 前期:2
Textbook and/or Teaching Materials Electrical equipment lecture notes that can be understood from the basics (Ohmsha) / None
Instructor Park Youngsoo

Course Objectives

1. Explain the characteristics of the transformer and calculate the voltage volatility and equivalent circuit constants
2. Explain the characteristics of the synchronous machine and calculate the synchronous impedance and output
3. Explain the characteristics of the inducer in synchronous watts and calculate controlled rotation speed
4. Explain the types and characteristics of speed control methods
5. Explain the stability conditions of electric motor operation, and calculate the rotation speed and torque in the balanced state.

Rubric

Ideal achievement levelStandard achievement levelMinimum achievement level
Achievement Goal 1Able to calculate equivalent circuit constants from various characteristic tests of transformersAble to calculate the voltage volatility of a transformerAble to explain the equivalent circuit of a transformer
Achievement Goal 2Able to calculate the voltage fluctuation rate using the phasor diagram of the output voltage and induced electromotive force of the synchronous machine.Able to explain the armature reaction of the synchronous machine and explain the effect on the characteristics.Able to explain the synchronous impedance and short circuit ratio of the synchronous machine
Achievement Goal 3Able to calculate the magnitude of synchronous wattage and maximum torque for induction motorsAble to explain synchronous wattsAble to explain the relationship between the input / output power of an induction motor and the magnitude of loss
Achievement Goal 4Able to explain the relationship between frequency and voltage in primary frequency controlAble to explain the proportional transitionAble to explain the types and principles of speed control methods for rotating machines
Achievement Goal 5Able to calculate the rotation speed and torque in the equilibrium state of motor operation.Able to explain the stable conditions for motor operation.Able to explain the difference between motor torque and load torque.

Assigned Department Objectives

学習・教育到達度目標 D-1 See Hide

Teaching Method

Outline:
The purpose is to understand the principle, structure, and various characteristics of transformers, which are AC power converters as well as static power converters. Basic characteristics of typical induction motors (mainly three-phase induction motors) and synchronous machines (mainly synchronous generators and synchronous motors) among AC rotating equipment based on the principle / structure and equivalent circuit of each rotating machine. Furthermore, the purpose is to understand how to operate these rotating machines.
Style:
In this class, we will deepen learning through group discussions. The goal is to acquire the ability to advance learning, discuss, and collaborate with others from different disciplines. Since this subject is a study unit, reports and online tests will be conducted as pre- and post-study.
[Class time 30 hours + self-study time 60 hours]
Notice:
Be sure to prepare and review to improve your understanding.

Characteristics of Class / Division in Learning

Active Learning
Aided by ICT
Applicable to Remote Class
Instructor Professionally Experienced

Course Plan

Theme Goals
1st Semester
1st Quarter
1st AC circuit of electrical equipment engineering Can draw a phasor diagram of an RLC AC circuit
2nd Transformer characteristic test Equivalent circuit constants can be obtained from transformer characteristic tests
3rd Transformer voltage volatility Can calculate the voltage volatility of a transformer
4th Transformer connection Can calculate the amount of transformers connected in three phases
5th Synchronous impedance and short circuit ratio Synchronous impedance and short circuit ratio can be calculated
6th Synchronous generator voltage volatility Can calculate the voltage volatility of a synchronous generator
7th Synchronous motor output Can calculate the output and torque of a synchronous motor
8th Induction machine output The input and output of the induction motor can be calculated from the formula of the ratio.
2nd Quarter
9th Induction machine loss The loss of the induction motor can be calculated from the formula of the ratio
10th Mid-term exam
11th Induction machine torque and slip Can calculate torque and slip when changing speed
12th Induction machine speed control Explain various speed control methods
13th Power electronics Explain the inverter circuit
14th Small machines Explain the features and usage examples of small machines
15th Electrical equipment application Explain the application of electrical equipment
16th Final exam

Evaluation Method and Weight (%)

Routine ExamLittle TestPortfolioAnnouncement /approach attitudeOthersTotal
Subtotal60202000100
Basic ability 10000010
Professional ability 5020100080
Cross-disciplinary ability00100010