![]() Understanding these foundational elements lays the groundwork for exploring the nuances of specific motor designs, such as the axial and radial flux motors. This fundamental concept forms the backbone of electric motor functionality, showcasing the intricate interplay of magnetic forces that fuels our technological advancements. When an electric current flows through the stator windings, a magnetic field is produced, compelling the rotor to follow suit. The principles of electric motors are rooted in electromagnetic induction. This transforms electrical power into the kinetic energy that powers our world. The stator, a stationary component, generates a magnetic field, while the rotor, the rotating part, interacts with this field, creating the driving force. At their core, these rely on fundamental components-the stator and rotor-working in harmony to produce motion. Fundamentals of Electric MotorsĮlectric motors serve to propel a myriad of industries forward, converting electrical energy into mechanical motion. From internal configurations to real-world applications, we will delve into the factors that make a difference in the performance and suitability of these motors for diverse industries. This blog post aims to unravel the intricacies of Axial Flux Motors and Radial Flux Motors, exploring the distinctive features that set them apart. Radial Flux Motor has become a pivotal consideration for engineers, manufacturers, and enthusiasts alike.Īs the demand for energy-efficient and compact motor solutions continues to grow, understanding the nuances between these two designs becomes essential. The Rolls-Royce ACCEL, holder of the current world speed record for an electric aircraft, uses three axial flux motors.Electric motors play a pivotal role in various industries, powering everything from electric vehicles to industrial machinery. One of the longest produced axial motors is the brushed DC Lynch motor, where the rotor is almost entirely composed of flat copper strips with small iron cores inserted, allowing power-dense operation. High-power, brushless axial motors are more recent, but are beginning to see usage in some electric vehicles. Axial motors are typically shorter and wider than an equivalent radial motor.Īxial motors have been commonly used for low-power applications, especially in tightly integrated electronics since the motor can be built directly upon a printed circuit board (PCB), and can use PCB traces as the stator windings. ![]() Axial geometries allow some magnetic topologies that would not be practical in a radial geometry. Even within the same electrical operating principle, different application and design considerations can make one geometry more suitable than the other. brushed DC, induction, stepper, reluctance) that can be used in a radial motor. The segments narrow towards the centre, leaving less room to arrange windings and connections.Īlthough this geometry has been used since the first electromagnetic motors were developed, its usage was rare until the widespread availability of strong permanent magnets and the development of brushless DC motors, which could better exploit this geometry's advantages.Īxial geometry can be applied to almost any operating principle (e.g.Uneven flux distribution due to wedge-shaped segments.The rotor is typically much wider, causing increased rotational inertia, and the higher centrifugal forces can reduce the maximum rotational speed.Since the magnetic path through the windings is straight, grain-oriented electrical steel can be easily used, offering higher permeability and lower core losses.Most structural components are flat and can be produced without specialised casting or tooling.Potentially shorter magnetic path length.It is often possible to make the rotor significantly lighter.Since the coils are flat, rectangular copper strips can more easily be used, simplifying high-current windings.The coil winding process and the process of joining the coil and core may be simpler.A motor can be built upon any flat structure, such as a PCB, by adding coils and a bearing.Please help rewriting it into consolidated sections based on topics. This section contains a pro and con list.
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