What is the role of the stator in energy efficiency?

The design and condition of this fixed component has a significant impact on motor performance. High-performance stators can play a significant role in reducing energy consumption, overall energy savings, and achieving sustainability goals. Newer versions of this component are typically designed using advanced materials and new technologies to maximize motor performance and minimize energy losses.

What are the advantages and disadvantages of the stator?

Advantages: High efficiency: The stator, as the main part of electric motors, has high efficiency and converts electrical energy into mechanical energy. Stability : The stator is typically stable as long as electrical current is supplied to it and requires less maintenance. Disadvantages: Weight : The stator is usually the heaviest component of motors and can increase the weight of the entire machine. Excess energy: The electrical current flowing to the stator consumes excess electrical energy.

What is a stator and what is its function?

The stator is made of high-quality alloy steel laminations, which helps reduce eddy current losses. The main components of the stator include the outer frame, core, and windings.

Outer frame: This is the outer part of the engine that acts as a support for the core and internal components of the machine. In some engines, the outer frame is made of castings.

Stator core: The main function of the core is to maintain the magnetic field, which causes losses such as eddy current and residual current. This core is connected to the stator frame and each connection is covered with a layer of insulating coating such as varnish. Typically, the thickness of this coating varies between 0.3 and 0.5 mm.

Stator winding:
The stator core has three-phase windings that are powered by a three-phase power supply. The windings consist of six terminals, two terminals from each phase are connected to the terminal box of the machine.
The stator in motors is wound for a certain number of poles depending on the speed of the motor. In general, the more the number of poles, the slower the motor speed. Conversely, if the number of poles is less, the faster the motor speed increases.

The relationship between speed and number of poles in a motor can be expressed as follows:

Ns ∝ ۱/p (یا) Ns = 120f/p