The generator speed was set during design and has nothing to do with the amount of power generated.
For alternating current, the speed of the generator determines the frequency of the alternating current, its voltage is determined by the excitation and winding, and the current is determined by the resistance of the output circuit energy to food. consumption, that is, charging, because the energy production and energy consumption are completed in an instant.
Therefore, the current also changes with the load. The product of current and voltage is power. Since generator power cannot change instantly, changes in current will cause voltage fluctuations, resulting in speed changes.
Generators are widely used in industrial and agricultural production, national defense, science and technology and daily life. IslandThere are many forms of generators, but their operating principles are all based on the law of electromagnetic induction and the law of electromagnetic force. Therefore, the general principle of its construction is: using suitable magnetic and conductive materials to form magnetic circuits and circuits that conduct electromagnetic induction among themselves to generate electromagnetic energy and achieve the conversion goal of energy.
Detailed information:
By installing the brushless synchronous alternator coaxially to the crankshaft of the machine electric, the rotation of the electric machine can be used to drive the rotor of the generator. Using the principle of "electromagnetic induction", the generator. will produce an induced electromotive force. The charging circuit can generate current.
In principle, they are divided into synchronous generators, asynchronous generators, single-phase generators and three-phase generators. In terms of generation method, they are divided into steam turbine generators, hydraulic generators, diesel generators, gasoline generators, etc. In terms of energy, it is divided into thermal generators, hydraulic generators, etc.
When the generator is connected to a symmetrical load, the three-phase current in the armature winding will produce another rotating magnetic field, called the armature reaction magnetic field. Its speed is exactly equal to the speed of the rotor and the two rotate synchronously.
The magnetic fielde of armature reaction and the excitation magnetic field of the rotor of the synchronous generator can be approximately considered to be distributed according to the sinusoidal law. The spatial phase difference between them depends on the temporal phase difference between the no-load electromotive force E0 and the armature current I. The armature reaction magnetic field is also related to the charge state.
When the generator load is inductive, the armature reaction magnetic field acts as a demagnetizer, which will cause the generator voltage to decrease; when the load is capacitive, the armature reaction magnetic field acts as; a magnetizer. This will increase the output voltage of the generator.
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Low calorific value Spark plugs are suitable for low-power, low-speed, low-speed engines.e compression ratio.
1. Spark plugs are divided into low calorific value spark plugs and high calorific value spark plugs. Different spark plugs suit different engines. , so we choose Be careful when doing it. So let's see the circumstances under which low calorific value spark plugs and high calorific value spark plugs are suitable.
2. The temperature of the center electrode of the low calorific value spark plug is easy to change, the temperature is easy to increase, and the power used is small. It is suitable for certain low power engines. suitable for low speeds and low compression ratios. Low calorific value spark plugs clean themselves during use. The material of the spark plug is an insulator, which can easily clean the carbon produced by the combustion.stion and prevent carbon accumulation.
3. Unlike low calorific value spark plugs, high calorific value spark plugs are more suitable for high horsepower engines with high speed and high compression ratio. long lasting. It is a very suitable choice for people who need to run at high speeds and long distances for long periods of time due to work demands.
Additional:
When the temperature is lower than 5℃, a spark plug with lower calorific value should be used to ensure the working temperature of the spark plug skirt d 'ignition. For older engines, choosing a spark plug with a lower calorific value can cause oil leaks and contaminate the spark plug due to worn machine parts.
Notes on spark plugs: Do not use them for a long time, otherwise their damagelife will be damaged. Charcoal should be cleaned regularly to prevent carbon buildup. Do not descale at will. Pay attention to the cleaning method. The correct cleaning method is to pour gasoline into the spark plug and clean it with a brush. Do not use sandpaper, metal sheets, etc.
Different situations require different calorific values of spark plugs, so it is recommended to choose according to the conditions of your car when choosing, and not to install them blindly. Choosing the right one will be a boost for your car. Wrong choice will reduce the operating efficiency of the car, thereby affecting your journey.
In summary, low calorific value spark plugs are suitable for low power, low rpm and low compression ratio engines.