A quick question regarding three phase coils connections of a motor

[StephenD420]

Hello everyone:

I have a quick question regarding connecting a three phase power supply to the coils of a three phase motor.

Now I know that if you had 3 pole pairs, 6 coils 120 degrees apart around a stator, that each diagonally adjacient coil gets connected in series and each of these series of two coils get connected to one of the three power supply phases. The series coils are shown in the attached picture so you can see what I am talking about.

But what if I wanted 8 coils, 4 coil/pole pairs. How would I connect this to a three phase supply so that the magnetic field rotates dragging the rotor around and around as the motor is supposed to do?

Thanks for any help you guys could give me. I really appreciate it.

Stephen

 

[anathema]

Hello Stephen,

Thank you for your question. Connecting a three phase power supply to the coils of a three phase motor is a crucial step in ensuring the proper function of the motor. In order to understand how to connect 8 coils, 4 coil/pole pairs to a three phase supply, it is important to first understand the basic principle of operation of a three phase motor.

A three phase motor works by creating a rotating magnetic field within the stator (outer stationary part of the motor). This rotating magnetic field is created by the interaction of the three phases of the power supply with the coils of the motor. Each phase of the power supply is connected to two coils that are 120 degrees apart around the stator. This creates a balanced and rotating magnetic field that drags the rotor (inner rotating part of the motor) around and around, thus producing the desired motion.

In the case of 8 coils and 4 coil/pole pairs, the same principle applies. The coils would need to be arranged in a way that creates a balanced and rotating magnetic field. This can be achieved by connecting each coil to a different phase of the power supply, with two coils connected to each phase. The coils should be arranged in a way that ensures they are 90 degrees apart from each other, creating a balanced and rotating magnetic field.

I hope this helps answer your question. If you have any further inquiries, please do not hesitate to ask. Good luck with your project!