What is Eddy Current Losses in Permanent Magnet Materials? Understanding and Minimizing Eddy Current Losses in SmCo and NdFeB Magnets Eddy current losses are a significant concern in rotating machinery, especially when using metal-based permanent magnets like Samarium-Cobalt (SmCo) and Neodymium-Iron-Boron (NdFeB). Core losses, which include both eddy current losses and hysteresis losses, must be [...]
Eddy Current Loss of Rare Earth Permanent Magnet Both samarium cobalt and neodymium iron boron are metal materials. Due to the good electrical conductivity of metal materials, the resistivity is very low. This is not a good thing for rotating machinery such as motors, because it will bring eddy currents to rotating machinery Loss, causing [...]
Hard And Soft Magnetic Materials Measurements FULL CHARACTERISATIONS OF Hard And Soft Magnetic Materials Measurements - Full characterisation of a vast range of hard and soft magnetic materials, from room temperature to high temperature. In soft ferromagnetic material, we can observe all the magnetic properties even on finished samples, such as rotating machine stators or [...]
Magnetizing or Magnetization In magnetizing the magnetic domains inside of a magnet are aligned with the magnetizing field. If the magnetizing field strength is high enough, all the domains will be aligned and the magnet is said to be magnetized to saturation. Magnetizing to saturation is usually recommended as only then are the magnetic properties [...]
Modeling Eddy Current Losses in Permanent Magnet Motor Let’s begin with our model geometry. In this example, we have a 3D model of an 18-pole PM motor. To reduce computational efforts and capture the full 3D behavior of the motor, we use sector symmetry and axial mirror symmetry. You can see an animation of the [...]