Research status of the hottest 42V permanent magne

2022-09-23
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Research status of 42V permanent magnet generator for automobile

based on the analysis of the working principle of permanent magnet synchronous generator, according to the characteristics and requirements of permanent magnet synchronous generator for automobile, the determination of the main size of motor, the size of permanent magnet These experiments further confirmed that SABIC PP 514m12 has excellent processing performance and serviceability. When the machine works, the motor drives the large pulley (usually also used as flywheel) through the 3-angle belt. Using the method of equivalent magnetic circuit, the design result of a 42 V permanent magnet synchronous generator for automobile is obtained. On this basis, the motor is further analyzed and studied, and the power angle relationship curve, power and efficiency relationship curve, pole pair and efficiency relationship curve, air gap length and efficiency curve are obtained

in recent decades, claw pole generators have been used in automotive generators, and claw pole generators are electrically excited generators. Claw pole generator is widely used in automobiles because of its simple structure, easy manufacture and low price. With the increasing internal electrical load of modern vehicles, the demand for automotive electrical system is also increasing. In the future, the power of automobile generator will gradually increase. The output power of traditional claw pole generator is generally less than 2 kW, and the efficiency is low. Therefore, it is necessary to design a new generator with high power and high cost performance. To increase power, only increasing the current level alone is not enough, because the greater the current, the more serious the heating and the greater the loss. Therefore, the traditional claw pole generator can not meet the increasing power and efficiency requirements, and will not be an ideal choice

compared with electric excitation generator, permanent magnet generator has the advantages of no power supply excitation, small size, light weight, high efficiency, long service life and high cost performance. It will probably replace the traditional claw pole generator and become the first choice of automotive generator. Compared with the generator with the same power, the permanent magnet generator extends the service life of the bearing and avoids the problems of easy burning, short circuit, disconnection and so on of the excitation winding of the electric excitation generator. Therefore, the permanent magnet synchronous generator can be applied to automobiles, and the purpose and engineering application value of 42 V automobiles are analyzed and studied

step generator can be used in automobile, and 42 V is a good voltage level. The analysis and research of 42 V permanent magnet generator for automobile has important significance and engineering application value

in recent years, the research on permanent magnet synchronous generator for automobile has been active at home and abroad. The literature proposes that the permanent magnet motor with double stator and outer rotor structure has two functions of generating electricity and starting the engine, and can be used in cars or hybrid electric vehicles. The design results of a 1.5 KVA permanent magnet generator are given in the literature, but the design process is not given. This paper presents the optimal design results of a hybrid excitation generator for automobile. Although the hybrid excitation generator can adjust the output voltage by adjusting the excitation current, the structure and magnetic circuit of hybrid excitation are too complex to be popularized and applied. A 6kW internal rotor permanent magnet generator for automobile is designed in the literature, but its structure is complex, the manufacturing process is complex, and it is not easy to be popularized and applied. The x value range of the mixed excitation experimental force of a new structure is proposed in the literature: 20n x 10kN; Magnetogenerator is used in hybrid electric vehicle, but its structure is too complex. Reference [8] uses the finite element method to analyze the influence of armature reaction and air gap permeability on the eddy current loss of tangential permanent magnet generator rotor

however, there is a lack of research on the electromagnetic design of automotive permanent magnet generators at home and abroad. Although the finite element method is accurate, it takes time to calculate. Compared with the finite element method, the equivalent magnetic circuit method has the advantage of shorter calculation time. In this paper, the equivalent magnetic circuit method is used to design a 42 V permanent magnet generator for automobile, which has the advantages of high efficiency, energy saving and high cost performance. The electromagnetic design process of the generator's main size, pole arc coefficient and stator winding design are analyzed and studied, and the design results of a permanent magnet generator for automobile are obtained. On this basis, the motor is further analyzed and studied, and the power angle relationship curve, power and efficiency relationship curve, pole pair and efficiency relationship curve, air gap and efficiency relationship curve are obtained. The motor has simple structure, which is convenient for production and manufacturing, and solves some problems in electromagnetic design. This paper provides a theoretical reference for the electromagnetic design, parameter calculation and optimization design of permanent magnet generator for automobile

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