Permanent Magnet Synchronous Motor vs AC Induction Motor Rare earth permanent magnet motor is a kind of permanent magnet motor that only appeared in the early 1970s. Due to the high magnetic energy product (BHmax) and high coercive force (especially high intrinsic coercive force Hcj) of rare earth permanent magnets, rare earth permanent magnet motors [...]
China's rare earth is stuck in the neck of permanent magnet motors, and foreign manufacturers are trying to get rid of "neodymium" dependence Rare earth permanent magnet motor is a kind of permanent magnet motor that appeared in the early 1970s. It has a series of advantages such as small size, light weight, high efficiency, [...]
What is the difference between permanent magnet synchronous motor and induction asynchronous motor? In this era when new energy vehicles are gradually emerging, the driving motor is as important to new energy vehicles as the engine is to fuel vehicles, because it not only determines the speed of vehicle startup, but also determines the acceleration [...]
Why is the permanent magnet synchronous motor with high integration, high power and low energy consumption the right choice Under the joint action of many factors, electric vehicles have become an unstoppable trend of transportation. There are more and more types of electric vehicles driving on the streets, and consumers' awareness of electric vehicles has [...]
Stator and rotor are the key components of permanent magnet synchronous motor The motors in new energy vehicles mainly include drive motors and micro motors. The drive motor can convert electrical energy into mechanical energy to provide power for electric vehicles according to the law of electromagnetic induction. It is mainly composed of stators, rotors, [...]
Classification and performance of magnetic materials Classification and performance of magnetic materials - Magnetic materials can be divided into permanent magnetic materials, soft magnetic materials and functional magnetic materials according to their functions. The indicators to measure the performance of magnetic materials mainly include three series: stability, demagnetization resistance, and temperature resistance. Permanent magnets, also [...]
New energy vehicles are the key downstream of magnetic materials The vigorous development of new energy vehicles has brought huge development space for magnetic materials. The sales volume of new energy vehicles in my country has increased from 507,000 in 2016 to 3.521 million in 2021, with an average annual growth rate of 47.34%. From [...]
In the future, the competition in the low-end market of magnetic materials will be more intense With the development of my country's industry and changes in consumer electronics products, magnetic materials will have a long development period of 10-20 years, and the product structure will develop towards digitalization, flat panelization, integration and energy saving. The [...]
Magnetic materials are expected to become the next innovation hotspot As an important functional material, magnetic materials are becoming more and more important in the information age, and have become one of the pillar industries of my country's national economy. It is estimated that the market size of my country's magnetic materials will reach 325 [...]
High-quality development of magnetic material industry "2022 China Magnetic Material Market Status Survey and Future Development Prospect Trend Report" believes that my country's magnetic material industry is in the process of "from big to strong" development, but as an emerging developing country, due to fierce competition in the magnetic material industry , the development of [...]
How can it be regarded as a valuable strong magnet, and how to distinguish Now many people know that strong magnet is more valuable, but they are not very clear about what kind of strong magnet is, because there are many kinds of magnets, and some people ask whether it is strong magnet if the [...]
If a magnet keeps doing work, will its magnetism be weakened or even disappear? There are many misconceptions about magnets and how they are magnetic. Since the magnetism of a magnet is invisible and intangible, it will be more abstract in the eyes of many people, and it is difficult to reflect it intuitively. First [...]
Magnetic Domains In ferromagnetic materials, smaller groups of atoms band together into areas called domains, in which all the electrons have the same magnetic orientation. That's why you can magnetize them. See how it works in this tutorial. Electrons are teeny tiny magnets. They have a north and a south pole and spin around an [...]
How are magnets made? More than 20 years of doubts have finally been solved Magnets, we remember deeply when we were young, it is a magical thing. After class, I played a magnet fight in the classroom. Two magnetic fighters each took a magnet and placed it on both sides of the center line at [...]
A girl swallowed toy magnet by mistake, and the doctor took it out smoothly 10 days ago, a 7-year-old girl Jiajia (pseudonym) accidentally put 2 toy magnets into her esophagus while playing with her classmates, and then she vomited and cried uneasy. , and then went to the Second Department of General Surgery of our [...]
How Magnets Work You probably know that magnets attract specific metals and they have north and south poles. Opposite poles attract each other while like poles repel each other. Magnetic and electrical fields are related, and magnetism, along with gravity and strong and weak atomic forces, is one of the four fundamental forces in the [...]
Doctor, the child eat magnet, what should I do? "Doctor, the child has eaten the magnet, what should I do?" On the morning of May 18, a mother and child came to the Hengjie Town Health Center in Haishu District of Ningbo City. The 7-year-old child accidentally swallowed the magnet. It turned out that the [...]
What to do if you swallow a magnet If the magnet is swallowed in the stomach, if the general condition is good and there are no related symptoms, it can be temporarily observed; if it cannot be discharged, cathartics can be taken orally, or the foreign body can be removed directly under the endoscope. 1. [...]
Why can't small magnets be put together with big magnets? There is no such requirement, that is to say, this statement is wrong. Farewell and small magnets can be stored together. During their storage, the magnetic attraction force of the large magnet will not be separated from that of the small magnet. The weakening of [...]
Magnet Myths Every time you use a computer, you're using magnets. If your home has a doorbell, it probably uses an electromagnet to drive a noisemaker. Magnets are also vital components in CRT televisions, speakers, microphones, generators, transformers, electric motors, burglar alarms, cassette tapes, compasses and car speedometers. In addition to their practical uses, magnets [...]
Why Magnets Stick If you've read How Electromagnets Work, you know that an electrical current moving through a wire creates a magnetic field. Moving electrical charges are responsible for the magnetic field in permanent magnets as well. But a magnet's field doesn't come from a large current traveling through a wire — it comes from [...]
The Details of Making Magnets To make a permanent magnet, all you have to do is encourage the magnetic domains in a piece of metal to point in the same direction. That's what happens when you rub a needle with a magnet — the exposure to the magnetic field encourages the domains to align. Other [...]
The Basics of Making Magnets Many of today's electronic devices require magnets to function. This reliance on magnets is relatively recent, primarily because most modern devices require magnets that are stronger than the ones found in nature. Lodestone, a form of magnetite, is the strongest naturally occurring magnet. It can attract small objects, like paper [...]
