The high and low-temperature environments of permanent magnet motor system device characteristics and indicators change greatly, the motor model and parameters are complex, non-linearity increases, the degree of coupling increases, and the power device loss changes, not only the drive loss analysis ...

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How are magnets magnetized during production? Recently, I learned that magnets are usually magnetized through the following three methods: Electromagnetic magnetization method: This is one of the most common magnetization methods. In electromagnetic magnetization, a magnet is placed in a solenoid c ...

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Improving the corrosion resistance of NdFeB rare-earth permanent magnet materials and its surface protection technology has become the key to breakthroughs in the engineering applications of rare-earth permanent magnet materials, mainly directly related to the market’s increasing and diversif ...

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In recent years, with the rapid development of new technology of sintered NdFeB magnetic materials, China’s NdFeB magnetic materials surface treatment technology has made gratifying achievements, many excellent technologies to reach or exceed the level of internationally developed countries ...

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Once the permanent magnet motor is demagnetized, basically the only option is to replace the motor; the cost of repair and a large amount of how to determine the permanent magnet motor demagnetized it, we go on to see. The machine at the beginning of the operation of the current is normal; after so ...

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The development of permanent magnet motors is closely related to the development of permanent magnet materials. China is the first country in the world to discover the magnetic properties of permanent magnetic materials and apply them to practice. More than 2000 years ago, China made a compass us ...

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The general magnetic field is too complex, and in engineering calculations, the magnetic field problem is usually simplified as a magnetic circuit problem. Usually, the following 5 laws are used. Before learning the 5 laws, understand the magnetic circuit’s physical quantities. Magnetic ...

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As the third-generation permanent magnet material, NdFeB is the magnetic material with the widest application, the fastest development, the best all-around performance, and the best cost performance. Due to the highest magnetic energy product and the corresponding coercivity obtained by using rar ...

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Musk once again made the bold statement at the “Tesla Investor Day” release, “Give me $10 trillion and I’ll solve the planet’s clean energy problem.” At the event, Musk unveiled his “Master Plan”. In the future, battery energy storage will reach 240 ...

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A permanent magnet (PM) motor is a type of AC motor that uses permanent magnets embedded or attached to the surface of the motor rotor. Electric vehicles use permanent magnet synchronous motors with high torque density and high efficiency, using permanent magnets that are neodymium magnet ...

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What is magnetic levitation? Magnetic levitation is a technology that uses a magnetic field to levitate objects in the air. It is a technology that uses magnetic force to overcome gravity to levitate objects. It is also known as magnetic levitation technology. Magnetic levitation is a frictionle ...

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According to the national standard, NdFeB permanent magnetic materials with the sum of intrinsic coercivity and maximum magnetic energy product value greater than or equal to 65 belong to high-performance NdFeB permanent magnetic materials. 1. Supply status (1) Supply of NdFeB permanent ...

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