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There must be electricity, which is energized to generate a magnetic field, and then the shaft of the generator is driven by an external force, so that there is magnetic flux in the coil.
Remember that there is a magnetic field in the coil that cannot be over-generated, and there must be a change in magnetic flux to be able to induce electromotive force.
All else being equal, the higher the number of generator coils, the higher the voltage generated.
There are many forms of generators, but their working principles are all based on the laws of electromagnetic induction.
and the laws of electromagnetic force. Therefore, the general principle of its construction is to use appropriate magnetic and conductive materials to form magnetic circuits and circuits that carry out electromagnetic induction with each other, so as to generate electromagnetic power and achieve the purpose of energy conversion.
How the generator works:
Diesel generators.
The diesel engine drives the generator to run, converting the energy of diesel into electricity. In the cylinder of the diesel engine, it passes through the air filter.
The filtered clean air is fully mixed with the high-pressure atomized diesel injected by the fuel injector, and under the extrusion of the piston upward, the volume is reduced, and the temperature rises rapidly to reach the ignition point of the diesel. The diesel fuel is ignited, the gas mixture burns violently, and the volume expands rapidly, pushing the piston downward, which is called 'work'.
Gasoline generators.
Gasoline engine. It drives a generator to convert the energy of gasoline into electricity. In the cylinder of the gasoline engine, the mixture is violently combusted, and the volume expands rapidly, pushing the piston down to work.
Whether it is a diesel generator or a gasoline generator, each cylinder works in a certain order, and the thrust acting on the piston becomes a driving crankshaft through the connecting rod.
The force of rotation, which drives the crankshaft to rotate. The brushless synchronous alternator is coaxially installed with the crankshaft of the power engine, and the rotor of the generator can be driven by the rotation of the power engine, and the generator will output induced electromotive force by using the principle of 'electromagnetic induction', and the current can be generated through the closed load circuit.
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There are two types of generators for automobiles, one is permanent magnet (there is a magnet) and the other is electromagnet (magnetic force is generated by electricity). There are two kinds of electromagnets, internal and external. The regulator of internal adjustment is in the generator, the magnetic field line is connected to the instrument panel at the other end of the D line (that is, the battery indicator light), and the magnetic field of the external adjustment is connected to the F end of the regulator at the other end of the F terminal (the regulator of the external adjustment generator is outside the generator, not installed on the generator) is satisfied.
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Generators do not have magnets inside, some coils are embedded in the slot of the stator core, and electromagnets are used instead of permanent magnets as rotors.
The magnet generator turns to generate electricity. The size of the electricity depends on the size of the generator. Even if the motor is turned to 1000 rpm, it only has a small amount of power. The big generators are all non-magnetic. Generally, only low-power magnets are used.
High-power generators use excitation to generate electricity, that is, the rotor and stator wires are connected together. When you want to generate electricity, you first send a little electricity to the stator, and at the same time turn the generator, so that the rotor coil will cut the weak magnetic field generated by the stator, and the electricity generated in this way flows into the stator, so that the cycle generates electricity.
But generators need some instruments to stabilize and control the flow of electricity. So the generator has a control box on it.
If there is no control box to control the rotor to transmit electricity to a given stator coil, this will cause the voltage and current to become higher and higher, which will cause the stator or rotor to heat up and burn out because it cannot withstand such a high current and voltage. For example, generators in power plants and hydropower generators are used to generate electricity.
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Summary. Dear, hello, car generator D+ line electric generator without electromagnetic, in this case, there are only two possibilities, either the regulator is damaged, or the rotor coil is damaged, and the possibility of regulator damage is not very likely, because the regulator damage can only lead to one situation, that is, the power generation is too high.
Car generator d+ line electric generator no electromagnetic what the reason is.
Dear, hello, the car generator D+ line electric generator is not in the field cover has electromagnetism, in this case there are only two possibilities, either the regulator is damaged, or the rotor coil is damaged, and the possibility of damage to the tuner is not very likely, because the regulator damage can only lead to one situation, that is, the power generation is too high.
Now according to what you said, this situation can only be the damage of the limb stator coil, because the general internal generator is basically brushless, and there are very few brushes, so this situation can only be the stator coil damage, and the stator coil must be replaced late, and the stator coil will be ok after replacing the limb
The D+ line is connected to the generator and tested the reason for the lack of electricity with a test lamp.
The disconnection of the development motor D+ is bright to prove that the indicator line is short-circuited. The indicator should be disassembled, replaced with a new fuse, and then ready to use.
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Summary. It will not operate normally, which has nothing to do with odd and even, but has to do with the working principle of power and speed.
Hello, I have received your question, I am sorting out the answer for you, it takes time to type, please wait a while 8 magnets can not fit in, I used 7 magnets, can I generate electricity normally?
Hello, the magnet generator can generate electricity by turning. Static magnet generator principle: by adding an alternating current voltage to described magnetizing coil, the direction of magnetic field line of described closed magnetic circuit is changed; And by the change of described open magnetic circuit magnetic field line induced by the change of described closed magnetic circuit magnetic field line direction, electromotive force is generated with electromagnetic induction in described induction coil.
It turns out that 7 blocks of 8 blocks will cause abnormal power generation.
It uses 8 magnets, but only 7 can fit in, does it have any effect?
Then use 6 pieces. Power generation can be normal.
It will not operate normally, which has nothing to do with odd and even, but has to do with the working principle of power and speed.
It turned out to be 8 pieces, and it should be able to fit 8 pieces when assembled.
The improved strong magnet itself has no magnets and cannot generate electricity.
Retrofitting the generator needs to take into account the motor speed and the magnetic field calculation of the magnet, which is relatively professional, if you are not a professional, please do not operate lightly.
Okay thank you. You're welcome to kiss, it's what I'm supposed to do, I wish you a happy life.
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The introduction of an electric current into the excitation winding to create a magnetic field is called excitation. There are two types of alternator excitation: self-excitation and other excitation.
He inspires. When the generator speed is low (the engine does not reach idle speed), it cannot generate electricity by itself. It is difficult to overcome the forward resistance of the diode due to the small electromotive force generated by the weak remanence alone, and the battery needs to supply the current to the excitation winding of the generator, so that the excitation winding generates a magnetic field to generate electricity.
This method of generating electricity by supplying a magnetic field current from a battery is called separately excited power generation.
Self-motivated. With the increase of speed (generally when the engine reaches idle speed), the electromotive force of the stator winding of the generator gradually increases and can make the diode conductive, when the output voltage of the generator UB is greater than the battery voltage, the generator can supply power to the outside world. When the generator can supply power to the outside world, it can supply its own electricity to the excitation winding, and this self-supplied magnetic field current is called self-excited power generation.
The excitation process of the alternator is first excitation and then self-excitation. When the engine reaches the normal idle speed, the output voltage of the generator is generally higher than the battery voltage 1 2V in order to charge the battery, at this time, the generator self-excitation power generation.
The excitation winding is connected to the external circuit by two brushes (F and E), and the generator is divided into two types: the inner iron wheel type and the outer iron type, which are <>
1) In-lap alternator: A generator in which one end of the excitation winding is directly connected to the rear end cover (direct by-iron) after being drawn out by a negative brush (E) is called an in-lap alternator.
2) External iron alternator: The generator with both ends of the excitation winding (F and E) insulated from the end cover is called an external iron alternator.
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Excitation method for DC generator power supply The generator of this excitation method has a dedicated DC power generation.
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The general generator excitation difference is as follows: at the beginning, use 220V DC excitation from outside, called excitation, and after the voltage at the end of the bumper rises to 15%, there are several more: virtual 1, the excitation mode of DC generator power supply The generator of this excitation mode has a dedicated DC power generation.
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Some. The magnetic force of a magnet is an essential property of matter, no, and the generator is driven by an external force, not by magnet energy.
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Not necessarily, it depends on what kind of motor it is, there are magnets in ordinary DC motors, and the rest is gone
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Electricity generates magnetism, magnetism generates electricity, and where there is electricity, there is a magnetic field.
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Pure misleading.
Generally, small generators use magnets, large generators are excitation coils, and there is a combination of excitation and magnets. All generators are nothing more than these three ways.
And what else "And the magnetic force of a magnet does not dissipate with long use, as if only at high temperatures dissipates the magnetic force" Is your physics taught by a physical education teacher?
If the magnetic force is not lost, it means that the "perpetual motion machine" is not difficult.
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What the subject means is that since generators generate electricity by cutting magnetic fields, do all generators, whether hydroelectric or wind-powered, have magnets in their generators?
Is there a generator without a magnet in it, and if there is such a generator, then how does the magnetic field of this generator come from the **?
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The servo motor is a rare earth magnet, rare earth is a very precious and rare material, and the speaker is generally made of ordinary magnet iron oxide or something sintered.
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Servo motor bai
The upper ones are rare earth magnets.
DU iron, rare earths are very precious and rare.
zhi material. The DAO speaker is generally made of ordinary magnets, which are sintered by oxidizing containing iron.
1. Electric machinery (commonly known as "motor") refers to an electromagnetic device that realizes the conversion or transmission of electrical energy according to the law of electromagnetic induction. In the circuit it is indicated by the letter M (D in the old standard).
2. Its main function is to generate driving torque, as a power source for electrical appliances or various machinery. Generators are denoted by the letter G in the circuit. Its main role is to use mechanical energy to convert into electrical energy, and the most commonly used at present is to use thermal energy, water energy, etc. to push the generator rotor to generate electricity.
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Larger motors should be made of magnets, and small and miniature ones should be ferrite.
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Magnets are generally divided into hard and soft magnets. A hard magnet, also known as a permanent magnet, is a magnetization that can be retained.
Magnetism. Permanent magnets include magnetic steel, manganese-zinc permanent magnets, etc., mainly in ordinary small DC motor stators, brushless DC motor rotors, horns, etc. The soft magnet is very magnetic when the electromagnetic passes, and the magnetism disappears immediately after the magnetization number.
There are silicon steel sheets, ferrites, etc., which are mainly used in silicon steel sheets, transformers, antennas, inductive devices, etc. for AC motors, generator stators and rotors.
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coils, small motors generally use magnets.
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Take a look at the image below:
Its power generation principle is to drive the generator after the engine starts, the generator still has a small amount of remanence at this time, so the stator coil can send out a very small amount of electricity, a small amount of electricity is sent back to the rotor through the slip ring to generate an excitation magnetic field, and the maximum magnetic flux is gradually reached over and over again, the rotor forms a strong magnetic field, and the generator can generate electricity normally.
Generators are also known as synchronous generators, and the power systems of China and a bunch of countries led by the former Soviet Union are all 50Hz frequency, and 60Hz in Western countries. When you say 1500 rpm, you mean a generator with 2 pairs of poles. The 1500 rpm motor you are talking about is also a synchronous motor, if it is an asynchronous motor, the speed should be about 1480, there is a slip rate, and the asynchronous motor is divided into squirrel cage type (such as Y series) and winding type (such as ZR series). >>>More
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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. >>>More