Abstract
With the development of the automotive industry, the demand for electricity for automotive equipment increases, which puts forward higher requirements for automotive generators. Compared with the traditional electric excitation generator, the permanent magnet synchronous generator (PMSG) has the characteristics of high efficiency, high power density, stable and controllable output voltage, and good heat dissipation performance, and is especially suitable for automotive applications. According to its characteristics, this paper makes an in-depth study on its design theory and main performance parameters. A high-efficiency rotor magnetic steel built-in vehicle permanent magnet synchronous generator is designed by using motor CAD, which eliminates the easily damaged collector ring and brush, improves the reliability of the motor, opens a ventilation hole in the rotor, enhances the heat dissipation effect, and adopts a skewed stator to effectively reduce the sinusoidal distortion rate of the output voltage waveform. The prototype has the characteristics of high power, small size and high reliability. The various performances of the prototype are analysed and verified on the simulation software. The results show that the performance of the prototype meets the design requirements, and the simulation results prove the rationality of the prototype design.
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