Structure principle and power of automobile generator

Automobile generator is the key power supply of automobile, and its function is to supply power to all electrical equipment (except starter) and charge the battery when the engine is running normally (above idle speed). Based on the three-phase stator winding of ordinary alternator, a set of three-phase bridge rectifier is added by increasing the number of winding turns and leading-out joints. At low speed, the primary winding and additional winding are output in series, and at high speed, only the primary three-phase winding is output. Then, the car editor patiently introduced the car generator to his friends.

structure principle

The medium, high and low speed power supply circuits are automatically switched without adding electromechanical adjusting devices. The working principle analysis is as follows:

In the low-speed range, because of the low speed of the generator, the three-phase windings are output in series, and the output voltage of the generator is increased, which greatly improves the low-speed charging performance of the generator. In the high-speed range, with the increase of generator speed, the inductance of three-phase winding in series increases, the internal voltage drop increases, and then the armature reaction is strengthened, which reduces the output voltage. At this time, the original three-phase windings A, B and C have relatively large induced current due to small internal voltage drop, which ensures the power output at high speed.

dynamic characteristics

In the process of doing a good job in car trading, we must do a good job in road testing. But in the process of road test, we must consider the power of the car. So, what is the driving force of the car?

The dynamic performance of a vehicle refers to the process of driving in a straight line on a good road surface, and the corresponding driving performance can be determined by the longitudinal external force, which is the requirement of achieving the average driving speed. As can be seen from this definition, for roads, it is necessary to have a good pavement, which is basically horizontal or sloping, and the movement mode can adopt the process of going straight. For external factors, vertical external force can determine the basis of movement and make it achieve the necessary ability. Generally speaking, there are three indexes of sports ability, the maximum speed, acceleration time and maximum climbing degree of a car. A car that can drive well on a good level road, if it can reach the highest speed, we call it the highest speed. As for the acceleration time, it is generally the starting acceleration time and overtaking acceleration time, indicating the acceleration ability of the car. & ampldquot & ampRdquo represents the time to start in place, and most of them basically start in first or second gear and gradually shift gears. If you drive to the necessary predetermined distance, the time required is determined by the speed. It's time to get in position. The acceleration time of overtaking can also be used &; As a good representative, ldquot & amprdquo, the one-minute car with the highest and second highest grade, has a speed of about 30 or 4, which needs to represent the time taken for complete acceleration on the expressway in one minute. Output.

Well, today's car editor has so many brief introductions about car generators. I wonder if my friends have a deeper understanding of the automobile generator after listening to the brief introduction of the automobile editor. I hope the profile of the car editor can help you solve the problem. If you want to know more knowledge, please pay close attention to this website. Bian Xiao's car is waiting for you here!

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