Car generator, what is a car generator, car generator introduction

The latter two types of generators are more used in some agricultural vehicles, but some agricultural vehicles will use permanent magnet generators, which is relatively rare. Permanent magnet generators do not need a regulator, as long as they rotate, they will generate electricity, and the initial rotational resistance is also very large, so it is easy to distinguish. However, the power is small, and it is suitable for the lighting of simple agricultural machinery.

The function of the generator of agricultural vehicles and automobiles is the same, mainly to generate electricity, but the electricity consumption of agricultural vehicles is mainly 12V, and some models of automobiles need a voltage of 24V.

<> now agricultural vehicles and automobiles are using advanced silicon rectifier generators, three-phase winding with excitation wires to connect the positive and negative poles to the ten-pole junction column of power generation and the negative electrode as an iron wire, which is connected to the car Dashun beam. Let's start with generators! The generator belongs to the alternator, and the external voltage is supplied to the excitation winding (coil on the rotor) through the carbon brush to generate a magnetic field, and the rotor rotates in the stator winding, so the alternating induced electromotive force is generated in the stator winding, that is, the AC top top.

Passenger car engines can be used directly on tractors. The principle of the car generator is the same as that of the agricultural vehicle generator, the structure is slightly different, but it can be used on the tractor with slight changes. This is not a car generator rotor, but the principle is the same.

This rotor uses the principle of electromagnetism, and the coil on the core will generate a magnetic field when the power supply is turned on, and the strength is related to the size of the current.

The generator on the car can be used on the tractor, but the pulley used on the car is different from the pulley used on the tractor. So the generator and pulley on the car need to be modified. to match the belt on the tractor.

There is also a voltage regulator to prevent the voltage from being too high and burning out the lights. The voltage is the same, that is, the engine speed is different, the diesel engine is generally 1500-2000 rpm, and the gasoline engine speed can reach up to 4000 rpm, and the power is also a little different.

Cars generally use integral generators, while those that can be used are general, generators with pumps, ordinary alternators, and agricultural generators are generally less powerful, while cars mostly use 24-volt generators.

Agricultural vehicles will use permanent magnet generators, and the power of agricultural vehicle generators is smaller and smaller than that of automobiles. Most of the generators of agricultural vehicles are only a few hundred watts, while the automobile generators are more than 1500W, and the volume is relatively large.

Generators are the main power source for automotive electrical equipment. During the normal operation of the car, the generator supplies power to other electrical equipment other than the starter and charges the battery. Today, I'm going to give you an analysis of car generators.

structure and working principle.

Most of the power generation judging machines used in automobiles are three-phase alternators.

Classification of alternators for automobiles.

The construction of the alternator.

The alternator consists of a rotor.

Stator, brush and slip ring mechanism, three-phase bridge rectifier.

Bearings, fans, front and rear end covers, etc.

1. Rotor. Second, the stator.

The stator is composed of a stator core and a three-phase stator winding, which is fixed between the front and rear end covers.

Three-phase windings are generally triangular.

In the two connection methods of star (Y), the stator winding induces and outputs three-phase sinusoidal alternating current under the action of the rotating magnetic field generated by the rotor.

Momentum. 3. Rectifier.

The whole liquid flush is to convert alternating current into direct current.

A device that generally uses a three-phase bridge rectifier circuit as a rectifier in a vehicle generator.

1. Rotor composition: The rotor is composed of a rotor shaft, an excitation winding, two magnetic claws, and a slip ring.

Purpose: Establish a magnetic field.

Introduction of excitation current: The excitation current is introduced into the winding through the brushes and slip rings, thereby generating the rotor magnetic field of the generator. The "F" (or "Magnetic Field") binding post and the "One" (lap iron) binding post.

2. Stator (also known as armature).

a. Composition: The stator generates AC electromotive force, which is composed of a stator core and a stator winding.

b. Connection method of stator winding.

Y-shaped connection of stator: Y-shaped (or star-shaped stupid macro) connection is the most commonly used method of connecting the traveling surplus of the winding. With the Y-junction method, the speed of the generator can fluctuate over a wide range while the output current value remains constant.

Stator Connection: In the shape connection, the induced current generated in each winding flows to a diode in a parallel circuit. More current flows through two parallel circuits than through one series circuit (e.g., in the Y-junction).

3. Rectifier.

The rectifier consists of a three-phase bridge rectifier circuit consisting of six silicon rectifier diodes.

The positive electrode tube is mounted on an aluminum heat sink plate, which is a positive rectifier plate (positive plate);

The negative electrode tube is mounted on another aluminum heat sink, which is the negative rectifier plate (negative plate).

4. Front and rear end covers, fans, pulleys, etc.

5. Brushes and brush holders.

The alternator consists of a rotor, stator, brush and slip ring mechanism, three-phase bridge rectifier, bearing, fan and front and rear end covers.

The structure of the automobile alternator is as follows: wide object.

Hope it helps, hope. Measure liquids with caution.

Automotive generators can be divided into DC generators and alternators, since alternators are superior to DC generators in many ways, DC generators have been eliminated, and alternators are divided into the following categories according to different classification methods:

1.It is divided into five categories according to the overall structure.

1) Ordinary alternator is also known as "silicon rectifier generator" (generator that needs to be equipped with a voltage regulator when used). Example: JF132 (for EQ140). See illustrations.

2) Integral alternator (generator and regulator made into one integral generator) For example, the engine of the Buick car is equipped with CS generators (including CS-121, CS-130 and CS-144 models).

3) Alternator with pump. (The Jiansonghong pump with pump alternator is a vacuum pump, not a vacuum booster pump, and the vacuum booster pump is on the car braking system).

4) Brushless alternator (generator that does not require brushes) Example: JFW1913.

5) Permanent magnet alternator. The magnetic pole is a generator made of permanent magnets).

2.According to the rectifier structure, it is divided into four categories.

1) Six-tube alternator Example: JF1522 (for Dongfeng Motor).

2) Eight-tube alternator Example: JFZ1542 (for Tianjin Xiali Automobile).

3) Nine-tube alternator (for Hitachi, Mitsubishi, and Mazda automobiles in Japan).

4) Eleven-tube alternator Example: JFZ1913Z (for Audi and Santana cars).

3.According to the form of magnetic field winding book, it is divided into two categories.

1) Alternator with iron inside One end of the magnetic field winding Sakura (negative electrode) is directly connected to the iron (connected to the housing).

2) External iron alternator One end of the magnetic field winding (negative pole) is connected to the regulator, and the iron is then connected after passing through the regulator.

The alternator is mainly composed of two parts: a three-phase alternator and a silicon diode rectifier.

1) The three-phase intake generator is mainly composed of a rotor and a stator, front and rear end covers, fans, pulleys, etc.

The role of the rotor is to generate a magnetic field. It is mainly composed of two claw-shaped poles, an excitation winding and a collector ring. Two pieces of the same shape of the claw pole cross on the shaft, the inner space is equipped with a steel magnetic choke and an excitation winding, the two ends of the excitation winding are respectively welded on the collector ring that insulates each other, and the two brushes lead out to connect with the "lap iron" and the "magnetic field" column on the rear end cover of the generator respectively.

When the excitation current passes, 6 pairs of poles are formed that are interlaced with each other.

The stator, also known as the armature, is mainly used to generate three-phase alternating current. It consists of an iron core and a three-phase winding. The stator core is composed of ring-shaped silicon steel sheets with grooves insulated from each other, and three symmetrical windings are wound in the stator groove to form a star-shaped connection.

The front and rear end covers of the generator are aluminum alloy die-castings, and there are brush holders inside the rear end covers.

2) The function of the silicon diode rectifier is to rectify the three-phase alternating current generated by the generator into direct current. It consists of 6 diodes, which are pressed on the aluminum alloy component plate and the rear end cover respectively to form a three-phase bridge rectifier circuit.

For the generator with iron on the negative electrode, the three diodes installed on the rear end cover are negative electrodes, and its shells are positive electrodes, and the three diode shells are connected together to become the negative electrodes of the generator, and its central lead is the negative electrode of the tube;

The three diodes mounted on the component board are positive electrode tubes, and their shells are negative electrodes, and the three diode housings are connected together to become the positive electrodes of the generator, and the central lead is the positive electrode of the tube.

Automobile alternator, generator is the main power source of the car, driven by the engine, it is in normal operation, to supply power to all electrical equipment except the starter, if there is excess energy, and then charge the battery.

Automotive alternators are also based on the principle of electromagnetic induction. When the magnetic flux is cut by a conductor moving in a magnetic field, an induced electromotive force is generated in the conductor. If you try to make the magnetic flux and the conductor cut relative to each other, an electromotive force can be generated in the conductor.

This phenomenon is called "electromagnetic induction".

The basic principle of generators is that the electromotive force generated by electromagnetic induction generates electrical energy (voltage and current). Although the movement of a single conductor in a magnetic field generates an electromotive force, it is very small. If the two conductors are connected end to end, then a secondary electromotive force will be generated, resulting in a double electromotive force.

When a conductor in the form of a coil rotates in a magnetic field, a large electromotive force is generated, resulting in voltage and current. Based on this principle, the Dongshan generator turns a coil in a magnetic field to generate electrical energy, and the current generated is an alternating current that changes in magnitude and direction.

Since the coil generates more electricity, the coil is more likely to heat up due to the action of electric current. Therefore, the coil is installed in the outer layer of the generator for cooling. Therefore, the power generation coil (stator core) of all AC power generation companies is in the outer layer, while the rotating magnet (rotor core) is inside the circle.

Car classification: passenger cars.

Passenger cars, by their design and technical characteristics, are primarily used for the carriage of passengers and their carry-on luggage and/or temporary items, including the driver's seat, with a maximum of 9 seats. There are 11 types of passenger cars. The main contents of Xinshan are:

Ordinary passenger cars, live top passenger cars, high-end passenger cars, small passenger cars, convertibles, cabin back passenger cars, station wagons, multi-purpose passenger cars, short passenger cars, off-road passenger cars, special passenger cars.

Commercial vehicles. Eddy current structure generators.

Commercial vehicles are designed and technical for transporting people and goods and can tow trailers, but passenger cars are not included. Mainly: passenger cars, semi-trailer tractors, trucks.

Motor. The engine is the power plant of the automobile, which is composed of 2 major mechanisms and 5 major systems: crank connecting rod mechanism, valve mechanism, cooling system, fuel supply system, lubrication system, ignition system, and starting system, but the diesel engine has one less ignition system than the gasoline engine.

The car is generally cooled.

1. Cooling system: generally composed of water tank, water pump, radiator, fan, thermostat, water temperature gauge and water discharge switch. There are two types of cooling for automobile engines, namely air cooling and water cooling. Generally, automobile engines are mostly cooled by water.

2. Lubrication system: The engine lubrication system is composed of oil pump, filter, oil filter, oil channel, pressure limiting valve, oil gauge, pressure sense plug and oil dipstick.

3 Fuel Supply System:

The fuel system of a gasoline engine includes a gasoline tank, a gasoline gauge, a gasoline pipe, a gasoline filter, a gasoline pump, a carburetor, an air filter, etc.

The role of the car alternator: it is the main power source of the car, driven by the engine, it is in normal operation, it supplies power to all electrical equipment except the starter, if there is excess energy, and then rents the hand to charge the battery.

Generators are usually made up of stator, rotor, end cap and bearing! The stator consists of a stator core, a wire-wrapped winding, a base, and other structural parts that hold these parts in place.

The automobile generator is the integral alternator, and its working principle is: the automobile generator is mostly a silicon rectifier generator, which is mainly composed of a three-phase alternator and a silicon diode rectifier.

Working principle: when the direct current is passed into the rotor winding, the rotor claw pole will establish a magnetic field, when the rotor rotates, the magnetic field of the magnetic pole cuts the stator winding, and the alternating electromotive force induced in the armature coil is changed into DC electromotive force when it is drawn out from the brush end by the commutator and the commutation action of the brush. As long as the generator is in good working order, there is no damage.

The rotor turns to generate electricity, but the electricity generated is not stored in the battery! The magnetic field lines inside the generator are generated by magnets! The automobile generator is the main power source of the car, and its function is to supply power to all electrical equipment (except for the starting hidden machine) when the engine is running normally (above idle), and at the same time charge the battery.

The forms of automobile generators include: DC generators and Jiaoli Chiyan Liudanda generators, which are divided into synchronous generators and asynchronous generators (rarely used); Alternators can also be divided into single-phase generators and three-phase generators. There are many types of generators.

In principle, it can be divided into synchronous generators, asynchronous generators, single-phase generators and three-phase generators, and can be divided into steam turbine generators, hydro generators, diesel generators and gasoline generators according to the power generation mode.

A generator is a mechanical device that converts other forms of energy into electricity. It is driven by a water turbine, steam turbine, diesel engine or other power machinery, which converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transfers silver to the generator, which then converts it into electrical energy.

Generators are widely used in industrial and agricultural production, national defense, science and technology, and daily life. There are many forms of generators, but their working principles are all based on the laws of electromagnetic induction and electromagnetic forces. Therefore, the general principles of its construction are:

Using appropriate magnetic and conductive materials, magnetic circuits and circuits are formed for mutual electromagnetic induction, so as to generate electromagnetic power and achieve the purpose of energy conversion.

Millions of car purchase subsidies.