Matching the motor parameters to the drive. It also has to be capable of handling the electric frequency of the motor, which depends on RPM and amount of pole pairs used in the motor. The selected drive should match this Voltage and current under all of the application conditions. The motor requires the correct Voltage and Current ranges to support maximum Speed (voltage) and maximum Torque (current) envisioned for the application. Selecting the drive based upon the parameters of the motor. Which of these approaches makes most sense depends on the required working points (Torque and Speed) of the application. Last but not least: the selection of the right motor drive. This translates into an easier installation and a benefit in cost when it comes to the mechanical construction. The radial flux permanent magnet motor benefits from a far more straightforward construction. The construction of an axial flux motor is complex and involves challenges that are difficult to solve using verified production and construction methods. However the axial flux motor generally uses significantly more permanent magnet material to obtain this higher torque density.Īnother important difference between the axial and radial flux motor is manufacturability and ease of construction. An axial flux motor generally has a higher torque density than a radial flux motor. A critical difference between the radial and axial flux motor, is the amount of permanent magnet material that is used for a given performance. 
When the flux is imposed in the axial direction, it is called an axial flux motor. When the flux is imposed in the radial direction the motor is called a radial flux motor. The name ‘radial’ or ‘axial’ originates from the direction in which the permanent magnets impose the magnetic field.
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