Permanent magnet generator-2

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The most significant difference between an irreversible magnet generator and an excitation generator is that its excitation electromagnetic field is produced by long-term magnets. Irreversible magnets are both a magnetic resource and an important part of the magnetic circuit in the electric motor. The magnetic properties of long-term magnets are not only related to the manufacturing procedure of the production plant, yet likewise pertaining to the sizes and shape of the irreversible magnet, the capacity of the magnetizer and the magnetization technique, and also the specific performance information is extremely discrete. Additionally, the magnetic flux and magnetomotive pressure that long-term magnets can supply in the motor also vary with the material residential or commercial properties, measurements as well as electric motor operating problems of the remainder of the magnetic circuit. Furthermore, the magnetic circuit framework of the permanent magnet generator is different, the leak magnetic circuit is very complicated, and also the leak magnetic flux accounts for a huge proportion, as well as the ferromagnetic product component is fairly simple to fill, and also the permeance is nonlinear. These all enhance the intricacy of the electromagnetic estimation of the irreversible magnet generator, to make sure that the accuracy of the calculation results is lower than that of the electric excitation generator. Therefore, a new design concept need to be established, and the magnetic circuit structure as well as control system must be re-analyzed and also improved; contemporary design methods have to be used, as well as new analysis and also estimation techniques should be examined to enhance the precision of design estimations; advanced testing approaches and also manufacturing must be studied. craft.

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Fold control trouble
After the long-term magnet generator is made, it can maintain its magnetic field without exterior energy, however it likewise makes it very tough to change and control its magnetic field from the outside. These limit the application series of irreversible magnet generators. Nevertheless, with the fast advancement of the control innovation of power electronic devices such as MOSFET and also IGBTT, the long-term magnet generator does not need magnetic field control and only does electric motor output control in application. The layout needs the combination of three new technologies of NdFeB material, power electronic devices and microcomputer control, so that the irreversible magnet generator can operate under new conditions.
Folding permanent demagnetization trouble
If the design and usage are inappropriate, the long-term magnet generator will be under the activity of the armature response produced by the inrush existing or under the serious mechanical vibration when the temperature is too high (NdFeB irreversible magnet) or too reduced (ferrite irreversible magnet). From time to time, irreparable demagnetization, or loss of magnetization, may happen, which will decrease the performance of the electric motor as well as even make it pointless. Consequently, it is required to research as well as create approaches and also tools for examining the thermal security of long-term magnet materials appropriate for electric motor makers, as well as to examine the demagnetization resistance of numerous structural types, so regarding embrace equivalent procedures during layout and also manufacture to make certain permanent magnetism. Magnetic generators do not shed their magnetism.
Folding expense issue
Because the existing rate of rare earth permanent magnet products is still relatively pricey, the cost of rare earth irreversible magnet generators is normally more than that of electric excitation generators, but this success will certainly be better compensated in the high performance as well as procedure of the motor. In the future style, according to the specific use occasions and requirements, the performance and also cost will be compared, and also the framework advancement and style optimization will be carried out to reduce the production cost. It is obvious that the expense price of the product under development is slightly more than the current basic generator, yet our team believe that with the additional excellence of the item, the expense trouble will be well resolved. The head of the technical department of DELPHI (Delphi) in the United States believes that: “Consumers focus on the expense per kilowatt.” His statement completely demonstrates that the marketplace prospect of air conditioner long-term magnet generators will not be troubled by expense problems.


Post time: Dec-13-2022