IPM vs SPM Electric Motors A PM motor can be separated into two main categories: surface permanent magnet motors (SPM) and interior permanent magnet motors (IPM) . Neither motor design type contains rotor bars. Both types generate magnetic flux by the permanent magnets affixed to or inside of the rotor. SPM motors have the magnets [...]
Difference Between Inline and Surface Mount NdFeB Magnets in PM Motors What is the difference between inline and surface mount design of NdFeB magnets for permanent magnet motors? 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 [...]
Effects of Magnetic Parameters on Permanent Magnet PM Motors How to measure the magnetic properties of magnet? Almost all magnet manufacturers use B-H curve testing equipment to get the demagnetization curve of magnet. This method is a closed circuit measurement, and an uniform cross-section sample is clamped between the faces of electromagnet. The testing sample [...]
Permanent Magnet Motor Operation Tips Key technical points for maintaining normal operation of permanent magnet motors 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 “Center” of Permanent Magnet Motors – Permanent Magnets 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 [...]
Determining Factors that Affect Magnetic Field Strength Consider a magnet's characteristics. Magnetic properties are described using these characteristics: Coercive magnetic field strength, abbreviated Hc. This represents the point at which the magnet can be demagnetized (degaussed) by another magnetic field. The higher this number, the more difficult it is to degauss the magnet. Residual magnetic [...]
Types of Magnets Magnets are common in normal life, and almost everyone knows about them. In particular, magnets are known as those materials that have the property of attracting and repelling certain metal materials, such as iron and nickel. However, this is not always the case. Magnets can sometimes lose their magnetic property and thus [...]
Cylindrical Permanent Magnetic Assemblies MPCO offers a wide variety of cylindrical permanent magnetic assemblies. Our assemblies come in alnico, ceramic, magnets with thru-holes, magnets with bolts and loops, and retaining magnets. Alnico magnets are ideal for high heat applications and Ceramic magnet assemblies are the most economical typically. Alnico refers to a type of iron [...]
Alnico Magnets Guide Alnico Magnets Info General Information Cast Alnico 5 is the most commonly used of all the cast Alnicos. This material is used extensively in rotating machinery, meters, instruments, sensing devices, and holding applications, to name a few. Excellent temperature stability, high residual induction, and relatively high energies characterize Alnico materials, composed primarily [...]
Grade of AlNiCo Magnet Grade MMPA Remanence Coercive Force Max. Energy Curie temperature Max Working Temp. Temperature Coefficient of Br Temperature Coefficient of Hcj abbr Br Hcb (BH) max Tc Tw. T.C.α(Br) T.C.α(Hcj) unit mT / Gs kA/m / Oe kJ/m3 / MGOe ℃ ℃ %/℃ %/℃ LNG10 ALNICO3 600/6000 44/550 10/1.25 750 550 -0.02 -0.03~-0.07 [...]
Different Types Of Speaker Magnets Speaker magnets come in all sort of different sizes and shapes, but the materials that they’re made of can really make a difference in the way the speaker sounds. Nowadays, all kinds of speakers have a permanent magnet fixed behind the centre of the speaker cone. It helps to interact [...]
Audio Device Speaker Magnet Everyone knows that magnets are needed in electroacoustic equipment such as speakers, speakers, and headphones, then -What role do magnets play in electroacoustic devices? -What effect does the magnet performance have on the sound output quality? -Which magnet should be used in speakers of different qualities? Come and explore the speakers [...]