Specializing in the design and manufacture of automotive motor armatures and stators.

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Precautions for using automotive armatures?

Release Time:

2022-11-05

   Automotive Armature As a new type of energy-saving, CNC integrated motor, it shoulders the important task of revolutionizing the existing motor structure to achieve the goal of more energy-saving and longer-life motor innovation. Below, we will discuss the precautions for using automotive armatures?

  There are also some precautions when using an automotive armature. For example, before disassembly, use compressed air to blow away dust from the surface of the motor and wipe off surface dirt. Choose a suitable location for disassembling the motor and clean the surrounding environment. It is also necessary to be familiar with the structural characteristics and maintenance technical requirements of the automotive armature. Only in this way can the necessary tools and equipment for disassembly be prepared. To further understand the defects in the operation of the automotive armature, if possible, an inspection test can be carried out before disassembly. For this purpose, the automotive armature is placed under load for a trial run, and the temperature, sound, vibration, etc. of each part of the motor are carefully checked, and the voltage, current, and speed are tested. Then, the load is disconnected, and a no-load test is performed separately to measure the no-load current and no-load loss, and records are made. After all these are completed, the power can be cut off, the external wiring of the motor can be removed, and records should be made.

  When using an automotive armature, a megohmmeter with a suitable voltage must be used to test the insulation resistance of the motor. In order to compare the insulation resistance value measured during the last inspection and judge the change trend and insulation state of the automotive armature, the insulation resistance values measured at different temperatures should be converted to the same temperature, generally 75℃. Next, the absorption ratio K needs to be tested. When the absorption ratio is greater than 1.33, it indicates that the automotive armature insulation has never been damp or the degree of dampness is not serious. In order to compare with previous data, the absorption ratio measured at any temperature also needs to be converted to the same temperature. Regularly check whether the sound of the automotive armature during operation is normal. If there is an abnormal sound, the machine must be stopped immediately for inspection, because the most worn part in the entire brushless motor is the bearing part. If there is an abnormal sound, it is very likely that the bearing is worn. If the wear is excessive, the bearing can be replaced and continued to be used. However, if the bearing is not replaced and continued to be used, the friction during the swinging and rotating process will accelerate the wear of other parts of the brushless motor, which will definitely accelerate the wear of the entire automotive armature.

  After the introduction of the above content, we have a further understanding of the precautions for using automotive armatures. We will no longer feel unfamiliar when we see it again, and problems will not occur frequently during use. Okay, that's all for today's content. I believe there will be more exciting knowledge points to come.

 

Automotive armature

12-01

2022

Starter motor armature manufacturer: What are the characteristics of the armature?

Starter armature manufacturer introduction: Whether it is a DC motor or an AC motor, and regardless of whether the winding is placed on the rotor or stator, it belongs to the armature winding placed in the iron core slot. It is only because of the different connection methods of the winding that different types and characteristics are obtained. In order to strengthen the mechanical fixation of the winding, its effective (straight) part is placed in the slot. But the ending is still an invalid part, only playing a connecting role. The starter armature manufacturer believes that the winding embedded in the slot also brings some problems. First of all, in order to prevent tooth saturation, the air gap magnetic density has to be limited, which limits the utilization coefficient of the motor. Second, the voltage of the motor cannot be too high. Third, the inductance of the coil becomes larger, which is related to the saturation of the iron core. In this way, for electric drive and servo systems, the response speed of the motor becomes slower, and the nonlinearity of the inductance complicates the control system. Therefore, in the development of large steam turbine generators, especially the emergence of superconducting motors, as well as DC motors and control motors, slotless motors have appeared. The starter armature manufacturer believes that slotless DC motors are mainly used for the control of DC traction motors and small DC motors. The iron core of the slotless motor is a cylindrical yoke, which is wound with an insulating layer or fitted with a prefabricated insulating tube. Then, the winding elements are evenly distributed on its surface.

11-21

2022

Starter armature manufacturer: Common sense of armature

The starter armature manufacturer indicates that the winding is the heart of the motor. Different motors, different manufacturers, and different processing technologies will correspond to different winding types. Different winding types are selected according to the specific characteristics to be achieved, requiring simple structure, convenient manufacturing and maintenance, and safe and reliable operation. The armature winding of a DC motor is the same as that of an AC motor. The relationship between the coils should be such that a certain number of conductors produce a large potential difference, saving as much non-ferrous metal and insulating material as possible. However, it also has its unique features: the coils are connected by a commutator, and the connection relationship must ensure good commutation. The starter armature manufacturer indicates that the armature windings of DC motors can be divided into five types: single winding, lap winding, single wave winding, multiple wave winding, and frog winding, i.e., a mixed winding of lap winding and wave winding. In a single lap winding, adjacent elements under the same magnetic pole are connected in series, and the pitch y=yk=1 or -1. When winding this type of winding, any two series-connected elements directly overlap each other, so it is called a lap winding. If y=yk=1, the winding moves to the right, which is called a "right-hand" winding; if y=yk=-1, the winding moves to the left, which is called a "left-hand" winding. Each element of the left-hand winding is connected to two short lines of the commutator, using copper.

11-11

2022

Overview of Automotive Armature

In the process of electromechanical energy conversion in a motor, the automotive armature plays a key and pivotal role. For a generator, it is the component that generates electromotive force. Let's take a detailed look at the automotive armature. The automotive armature is the component in the motor that carries the coil, and the relative movement of the coil and the magnetic field. In a generator, the induced electromotive force is generated in the coil, and the coil rotates under force to generate electricity. In a motor, the energized coil is subjected to Ampere force in the magnetic field, causing it to rotate in the magnetic field. Since the automotive armature plays a very important role, you should know that in fact, part of an AC generator or related equipment can be represented in mechanical or electrical terms. Although clearly separate, note that these two sets of terms are often used interchangeably, or include a combination of mechanical and electrical terms. This can lead to confusion when using composite machines such as brushless AC generators, or when talking between people accustomed to using differently configured machines. Therefore, in most generators, the excitation magnet rotates and is part of the rotor, while the automotive armature is stationary and part of the stator. Motors and generators can be constructed with a stationary armature and rotating magnetic force or a rotating armature and stationary magnetic force. The demagnetization effect of the automotive armature can be...

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