The aluminum motor uses high-quality materials and optimized design to achieve higher efficiency. For example, the higher the aluminum content in the rotor, the higher the slot filling factor in the stator, and the smaller the resistance loss. The optimized rotor structure and rotor stator air gap reduce the loss of stray load. The improved design of the cooling fan allows the motor to cool with less wind resistance loss. The rotor and stator cores use higher quality steel plates, and the steel plate lamination is thinner, which can greatly reduce the magnetization loss. The reduction in friction loss is caused by higher quality bearings. The following diagram shows the anatomy of an AC induction motor, indicating the housing and bearing assembly. The size of the stator lamination and the mass hysteresis loss and eddy current loss of the steel used are called core loss. About 20% of the total loss is caused by eddy currents and core saturation. It's produced on top of each other

The failure of aluminum motor can be divided into two kinds: electrical failure and mechanical failure. Electrical failures include failures of switches, fuses, buttons, stator windings and starting equipment; Mechanical failures include failures of bearings, housings, shafts, fan blades and end caps. Electrical and electronics engineers are burdened. They need to be familiar with various motor failures. Once a Marine motor fails, electrical and electronics engineers on board must accurately find out the cause and part of the fault in a short period of time, and use motor theory to compare and analyze different faults, eliminate unrelated factors, and find the cause and part of the fault. The following are the tools to judge the steps of the faulty body: 1. Master the operating state, structure, specifications and working mechanism of the aluminum motor. During the normal operation of the aluminum motor, please always pay attention to its operating status. if