Product Name: Simulated Electric Motor

Product Number: K0558

Package: Packaging Bag

Product size: 110*60*85MM

Packing Quantity: 400 PCS

Box Size: 600*400*550 MM

                                                        Battery included

                                             Simulated Motor Course Presentation

The construction of an electric motor is divided into two parts: the stator and the rotor. Note: Do not confuse the commutator with the commutator pole. Remember their roles. The stator includes: main magnetic poles, frame, commutator, brush device, etc. The rotor includes: armature core, armature winding, commutator, shaft, and fan, etc. 2. Excitation methods of DC motors The performance of a DC motor is closely related to its excitation method. There are four common excitation methods for DC motors: DC helix excitation motor, DC parallel excitation motor, DC series excitation motor, and DC compound excitation motor. Master the characteristics of each method: - A DC helix excitation motor has no electrical connection between the excitation winding and the armature. The excitation circuit is supplied by a separate DC power supply. Therefore, the excitation current is not affected by the armature terminal voltage or armature current. - A DC parallel excitation motor has the same polarity as the armature winding. The excitation current is directly supplied by the armature winding, so the excitation current is affected by the armature terminal voltage and armature current. - A DC series excitation motor has the same polarity as the armature winding. The excitation current is supplied by the armature winding, so the excitation current is affected by the armature terminal voltage and armature current. - A DC compound excitation motor has both series and parallel connections. It has the characteristics of both series and parallel excitation motors.The voltage at both ends of the field winding is the same as the voltage at both ends of the armature, but the field winding is wound with thin wires, which has a large number of turns, resulting in a larger resistance, thus causing a smaller current through it. In a direct current series excitation motor, the field winding is in series with the armature, so the internal magnetic field of this motor significantly changes with the change of the armature current. In order to prevent large losses and voltage drops in the field winding, the smaller the resistance of the field winding is, the better, so direct current series excitation motors are usually wound with thicker wires, with fewer turns. In a direct current compound excitation motor, the magnetic flux is generated by the excitation currents in both windings.

Objective of the experiment: 1. Understanding the structure of an electric motor - An electric motor is a rotating electromagnetic machine that operates based on the principle of electromagnetic induction. It is used to convert electrical energy into mechanical energy. When operating, it absorbs electrical power from the electrical system and outputs mechanical power to the mechanical system.

Experimental Cognition
Battery box: As the name suggests, it is a box used to install and fix the batteries, which is the device for outputting battery power.

Circuit: When the rotor winding is powered, an induced electric potential and current are generated. The induced current in the magnetic field will be subject to a force. The direction of the rotor current's force is the same as the direction of the rotating magnetic field. The magnetic flux through the air gap and the rotor current produce
The torque generated is what is known as the electromagnetic torque of an electric motor. When the electric motor rotor is dragged by the electromagnetic torque, it starts to rotate in the direction of the rotating magnetic field.

Magnet: Magnets are not invented by humans; they are natural magnetite. The ancient Greeks and the Chinese discovered that there is a natural magnetized stone in nature, which they called 'lodestone.' This stone can magically attract small pieces.
The iron plate, and after being waved at will, always points to the same direction. Early sailors used this magnet as their early compass to navigate at sea to distinguish directions. Early discovery and use of magnets should be in the middle
The Chinese people, also known as the "compass," are one of the four great inventions of China.

Experimental steps:
1. Experiment Preparation: Understanding Experiment Equipment: Wires, Coils, Battery Box, Wooden Baseboard, Supports,

Experiment Report:
The motor uses the properties of electromagnetic force to rotate the stator, and students can make their own motors to understand the basic principles of the motor.