Answer：In-wheel motor drive technology represents an important development direction for new energy vehicle drive systems. This paper introduces the characteristics of in-wheel motor drive electric vehicles, summarizes the technical requirements and drive f...
Answer：Rare earth permanent magnet synchronous motor (REPMSM) has the characteristics of small size, light weight and high efficiency. In theory, the rotor has no fundamental wave loss and the rotor temperature rise should be low, but the actual situation i...
Answer：Single- and double-layer hybrid windings are most suitable to be obtained by equivalent changes of double-layer stacking windings. It is not recommended to improve by single-layer windings, which will reduce the fundamental wave winding coefficient,
Answer：A motor with a higher power does not necessarily mean it is more powerful, because the power of a motor depends not only on power but also on speed.
Answer：When the voltage drops, the motor, as the core component of electric drive, will face a series of significant changes. The following is a detailed discussion of these changes to help better understand how the voltage reduction affects the performance...
Answer：Force waves with low vibration order and large amplitude play a major role in the vibration and noise of the motor. When the force wave order is large, it can be ignored; when the force wave order is low, the magnetic field harmonics that generate th...
Answer：The development of drive technology, from the original dominance abroad to the emergence of various excellent technologies in China, shows the progress of domestic technology. At the same time, it can also be seen that every technological innovation ...
Answer：eVTOL refers to an aircraft that uses electricity as a flying power source and has vertical take-off and landing capabilities . It has the characteristics of vertical take-off and landing, intelligent operation, and fast maneuverability. Compared wit...
Answer：When the car starts or changes speed suddenly, there will be a metallic collision sound, and there will be a slight vibration at the rear of the car body when turning. This means that the fixing bolts or rivets of the differential case have been seri...
Answer：In modern industrial production, mechanical equipment plays a vital role. They not only improve production efficiency, but also reduce labor intensity, providing strong support for the development of enterprises. Today, let's take stock of the m...
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