English
RFQ

Download the app

How many types of AC motor winding are there?

Encyclopedia

11/14/2024

Types of AC Motor Windings

The classification of AC motor windings can be carried out from multiple perspectives, mainly including the number of phases, the number of layers inside the slot, the number of slots occupied by each pole per phase, winding arrangement, phase belt, coil shape, and end connection method. The following is a detailed introduction to the classification:

Classification by the number of phases

Single-phase winding: Suitable for specific applications such as small motors in household appliances.
Three-phase winding: The most common type, widely used in various motors for industrial and household applications.

Classified by the number of layers in the slot

Single Layer Winding: Only one coil side in each slot.
Double layer winding: Two coil sides are placed in each slot, usually divided into upper and lower layers.

Classified by the number of slots occupied by each pole per phase

Integral-slot winding: The number of slots occupied per pole and phase is an integer.
Fractional-pitch winding: The number of slots occupied per pole and phase is a non-integer.

Classified by winding arrangement

Concentrated winding: The winding is concentrated in a few slots.
Distributed winding: The winding is distributed across multiple slots to reduce the effects of harmonics.

Classify by tape

120° phase belt winding
60º phase belt winding
30º Phase Belt Winding

Classification by coil shape and end connection method Wound Coil

Wound Coil
Hollow-core winding
Chain winding
Interlaced winding

Classification by Magnetic Potential Waveform Generated by Winding

Sine Wave Winding
Trapezoidal Winding

The above are the main types of stator windings for AC motors. Different winding types are suitable for different application scenarios and requirements. Choosing the appropriate winding type is crucial for the performance and efficiency of the motor.

Topics

Machines Electric Motors

Encyclopedia

The Electricity Encyclopedia is dedicated to accelerating the dissemination and application of electricity knowledge and adding impetus to the development and innovation of the electricity industry.

Cost Differences and Performance Comparison of 35kV New Energy Transformers Based on Dry-Type, Mineral Oil, and Vegetable Oil

Cost Differences and Performance Comparison of 35kV New Energy Transformers Based on Dry-Type, Mineral Oil, and Vegetable Oil

For users, when purchasing a 35kV new energy transformer, choosing between dry-type, mineral oil-filled, or vegetable oil-filled types involves multiple considerations. These include user habits, maintenance-free performance, safety and fire resistance, volume and weight, among others. However, cost differences are undoubtedly one of the most crucial factors.To illustrate the issue intuitively, this paper selects a three-level energy efficiency dual-winding new energy transformer with a rated ca

What is the connection group of a transformer?

What is the connection group of a transformer?

Transformer Connection GroupThe connection group of a transformer refers to the phase difference between the primary and secondary voltages or currents. It is determined by the winding directions of the primary and secondary coils, the labeling of their start and end terminals, and the connection mode. Expressed in a clock-like format, there are 12 groups in total, numbered from 0 to 11.The DC method is commonly used to measure the transformer's connection group, mainly to verify whether the con

What is the sequence for powering down the transformer?

What is the sequence for powering down the transformer?

The sequence for shutting down a main transformer is as follows: when de-energizing, the load side should be shut down first, followed by the power supply side. For energizing operations, the reverse order applies: the power supply side is energized first, then the load side. This is because: Energizing from the power supply side to the load side makes it easier to identify the fault range and take prompt judgment and handling measures in case of a fault, preventing the fault from spreading or e

What are the methods for switching operations of station transformers?

What are the methods for switching operations of station transformers?

Let's take an auxiliary power system with two station transformers as an example. When one station transformer needs to be out of service, there are two operation methods: non-interruptive power supply and instantaneous power interruption. Generally, the method of instantaneous power interruption on the low-voltage side is preferred.The operation method for instantaneous power interruption on the low-voltage side is as follows:Open the 380V power incoming circuit breaker of the corresponding sec

Source professional electrical partners, experts, and explore smart grid & energy solutions.