Analysis of junior high school physics DC motor and AC motor structure and principle It's best to explain the use. Let's talk about the structure and principle in detail,

The working principle of DC motor roughly applies the principle of "the action of the electrified conductor under the force in the magnetic field". The two end lines of the excitation coil have the current in the opposite direction, which makes the whole coil produce the torsion around the shaft and make the coil rotate
In order to make the armature subject to a constant direction of electromagnetic torque, the key lies in: when the coil side is under different polarity of magnetic pole, how to change the direction of current flowing through the coil in time, that is, to carry out the so-called "commutation". Therefore, a device called commutator must be added. The commutator with electric brush can ensure that the current in the coil side under each pole is always in the same direction, This is the working principle of DC motor
DC motor is divided into two parts: stator and rotor. Remember that the stator and rotor are composed of those parts. Note: do not confuse the commutating pole with the commutator, remember the role of the two
The stator includes: main magnetic pole, frame, commutating pole, brush device, etc
Rotor includes: armature core, armature winding, commutator, shaft and fan
AC motor is a machine that converts electrical energy into mechanical energy
AC motor is mainly composed of an electromagnet winding or distributed stator winding used to generate magnetic field and a rotating armature or rotor. The motor is made of the phenomenon that the electrified coil is forced to rotate in the magnetic field
AC motor is composed of stator and rotor, and the stator and rotor use the same power supply, so the direction of current in the stator and rotor always changes synchronously, that is, the direction of current in the coil changes, and the direction of current in the electromagnet also changes. According to the left-hand rule, the direction of magnetic force on the coil remains unchanged, and the coil can continue to rotate. AC engine works based on this principle
Main uses of AC motor: the AC motor has high efficiency, no smoke, smell, no pollution to the environment, and low noise. Because of its advantages, it is widely used in industrial and agricultural production, transportation, national defense, commercial and household appliances, medical appliances and other aspects

What is the difference between AC motor and DC motor in structure

DC motor is divided into brushless and brush, brushless motor is the use of triode to convert DC into rectangular pulse of three-phase AC, produce rotating magnetic field, and three-phase asynchronous motor is similar, brush motor is brush and commutator, through commutator to change the direction of force, as for AC motor, divided into synchronous and asynchronous, synchronous

What is the structural difference between DC motor and AC motor?

The function of motor is to convert electric energy into mechanical energy. Motor is divided into AC motor and DC motor. (1) AC motor and its control. AC motor is divided into asynchronous motor and synchronous motor. Asynchronous motor is divided into single asynchronous motor, two-phase asynchronous motor according to the different number of stator phases

The basic structure of AC motor is composed of four parts
The answer is whether the coil magnet is composed of two sliding two brushes

Housing (shaft, bearing, transmission) + stator (coil) + rotor (coil) + brush

What are the main components of the alternator?

AC generator is mainly composed of three-phase AC generator and silicon diode rectifier. The three-phase AC generator is mainly composed of rotor and stator, front and rear end covers, fans, pulley, etc The inner space of the shaft is equipped with a steel magnetic choke and an excitation winding. The two ends of the excitation winding are respectively welded on the mutually insulated slip ring, and the two brush bows are respectively connected with the grounding connection post and the magnetic field connection post on the rear end cover of the generator. When the excitation current passes through, six pairs of mutually staggered magnetic poles are formed, The main function is to generate three-phase alternating current. It is composed of iron core and three-phase winding. The stator iron core is composed of five phase insulated circular silicon steel sheets with slots. The stator slots are wound with three-phase symmetrical windings for star connection, The silicon diode rectifier is used to rectify the three-phase alternating current generated by the generator into direct current. It consists of six diodes, which are respectively pressed on the aluminum alloy element plate and the rear end cover to form a three-phase bridge rectifier circuit, The three diode shells connected together become the negative pole of the generator, and the center lead is the negative pole of the tube; the three diodes installed on the component board are the positive pole, and the shell is the negative pole, and the three diode shells connected together become the positive pole of the generator, and the center lead is the positive pole of the tube

What is the main structure of AC generator and DC generator?

This paper first introduces the generator for teaching in the Physics Laboratory of middle school, because this kind of equipment is the simplest
Alternator: This is the simplest generator. The generator consists of stator and rotor. The stator in the generator in the laboratory is a magnet, and the rotor is a coil. When the coil rotates in the magnetic field, alternating current is generated in the coil, and the current is output to the external circuit through the brush. Please search the Internet for pictures, and you can find many
DC generator: the DC generator in the laboratory only has one more component than the AC generator, the commutator. Because the current generated in the coil is AC, the size and direction are constantly changing, so the direction of the current output by the coil does not change through the commutator, which becomes the direct current. But this kind of direct current is not the same as the direct current output by the battery, and its size is still changing, It is called pulsating direct current. The output current of battery is called steady current
The generator in our life is different from that in the laboratory. Its rotor is a magnet, not a coil, and there are three groups of magnets, and the coils are not one group, but also three groups. Therefore, this kind of generator generates three groups of current at the same time. The highest voltage of the three groups of current is the same, but the time of current change is different, It is called three-phase alternating current. Its output wire also has two connection methods: 1. Connect one end of three coils together, lead out a wire, and lead out another wire at the other end of each coil, which is called "Star" connection method. 2. Connect three coils in sequence, and then lead out three wires at the connection, which is called triangle connection method
That's all. If you have any questions, you can add them or send me a message, I will answer them

What are the components of automobile alternator? What are their functions?

1. The rotor plays the role of generating magnetic field and cutting magnetic line of force when rotating,
2. Stator! Induction electricity is generated when the rotor rotates to cut the magnetic line of force! It is divided into alternating current!

What is the difference between AC generator and DC generator in construction

The alternator has no commutator; the DC generator has a commutator
The generator uses the closed conductor to cut the magnetic induction line to generate the current. The size and direction of the current will change with the direction of the coil rotation, which is the alternating current. If the direction of the electricity emitted by the generator does not change, which is the direct current, then it needs an additional commutator

Is the construction of alternator and DC motor the same

Not exactly. There are commutators on the rotor of DC generator
There are copper rings on the alternator

The story of Nikola Tesla
Little stories about his life

1. When I played with an electric ball in my hand, other scientists thought it was just a small experiment, but no one has been able to do it so far. 2. I was invited to participate in the Philadelphia Experiment, but I refused because I knew that the experiment was risky. In fact, the Philadelphia experiment failed. 3. I was considered to have created the tungustic explosion

Analysis of junior high school physics DC motor and AC motor structure and principle It's best to explain the use. Let's talk about the structure and principle in detail,