TERM: 2ND TERM
WEEK TEN
Class: Senior Secondary School 1
Age: 15 years
Duration: 40 minutes of 5 periods each
Date:
Subject: BASIC ELECTRICITY
Topic: ELECTRICAL POWER
SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to
I.) Identify the components of electrical power generation
II.) State the functions of the components
INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source
INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,
INSTRUCTIONAL PROCEDURES
PERIOD 1-2
|
PRESENTATION
|
TEACHER’S ACTIVITY
|
STUDENT’S
ACTIVITY
|
|
STEP 1
INTRODUCTION
|
The teacher identify and describe the components of electrical power generation
|
Students listens attentively to the teacher
|
|
STEP 2
EXPLANATION
|
Teacher explains the functions of each components of electrical power generation
|
Students exhibit attentiveness and active engagement
|
|
STEP 3
NOTE TAKING
|
The teacher writes a summarized
note on the board
|
The students
copy the note in
their books
|
NOTE
ELECTRICAL POWER
Components of electrical power generation
The main components of electrical power generators include:
- Rotor: The rotor is the rotating part of the generator. It typically consists of a shaft and a set of electromagnets or permanent magnets. The rotor rotates within the stator and is driven by an external power source, such as a turbine or an engine.
- Stator: The stator is the stationary part of the generator. It contains coils of wire wound around an iron core. When the rotor spins, it induces an alternating current (AC) in the stator windings through electromagnetic induction.
- Exciter: The exciter is a small generator mounted on the same shaft as the main generator rotor. It provides the initial electromagnetic field necessary to start the generation of electricity in the main generator.
- Prime Mover: The prime mover is the mechanical source of power that drives the rotor of the generator. It can be a steam turbine, gas turbine, diesel engine, water turbine, wind turbine, or any other device capable of converting mechanical energy into rotational motion.
- Cooling System: Generators generate heat during operation, so they require a cooling system to maintain proper temperature levels and prevent overheating.
- Voltage Regulator: The voltage regulator controls the output voltage of the generator by adjusting the excitation current supplied to the rotor.
Functions of the components
- The rotor carries the magnetic field that interacts with the stator to induce an electric current. It is responsible for generating the mechanical energy necessary for electricity production.
- The stator contains the conductive coils that generate electricity when exposed to a changing magnetic field. It produces the alternating current (AC) output of the generator.
- The exciter provides the initial magnetic field required to start the generation process in the main generator. It ensures that the generator can self-excite and produce electricity when initially brought online.
- The prime mover converts various forms of energy (such as steam, gas, diesel, water, or wind energy) into mechanical energy to drive the generator rotor. It is responsible for supplying the primary input power to the generator.
- The cooling system dissipates heat generated during operation, preventing overheating and ensuring the longevity and efficiency of the generator.
EVALUATION: 1. Mention 4 components of electrical power generation
- State the functions of the components mentioned in 1 above
CLASSWORK: As in evaluation
CONCLUSION: The teacher commends the students positively
