Induction motor slot type design and calculation method based on slot type element combination

Abstract

Provided is an induction motor slot type design and calculation method. A horizontal line is drawn while end points of line segments forming a slot type and the widest transverse portion of an arc are taken as nodes. A slot is divided into a plurality of sections, and subdivided into four basic slot type elements, namely a trapezoid, a rectangle, an upper half-round with a flat top and a lower half-round with a flat bottom for solution or a newly self-defined slot type is directly designed through combination of the four slot type elements, and slot leakage reactance parameters of basic type slot type elements are obtained through combination calculation. Slot leakage permeance of a whole slot is a function sequentially accumulating slot leakage permeance parameters of element slot types. The method has the advantages that the slot type is divided into the four basic elements for calculation or is newly designed through the combination of the four slot type elements, a traditional slot type is not limited, and design flexibility is enhanced. The method can be applied to an induction motor, especially on a special motor having special requirements for motor performance, promisingly greatly lowers use of effective materials of the motor, and can save copper, iron, aluminum and other non-renewable sources.

Description

technical field [0001] The invention belongs to the technical field of induction motors, in particular to a groove design calculation method for induction motors, and proposes a design calculation method based on the combination of groove elements for groove types suitable for industrial typical structure induction motors. Background technique [0002] With the country's emphasis on energy conservation and emission reduction, various measures and norms have been introduced successively. Among them, the induction motor has a large quantity and a wide range, and the annual power consumption accounts for about 60% of the total power generation. Therefore, the research on the design method of the motor is of great significance. [0003] Analytical design of induction motors has the advantages of short calculation time, strong regularity, and convenient application, and is most commonly used in industrial production. There are many types of induction motors, and the typical stru...

AI Technical Summary

Problems solved by technology

[0011] 2. Neglect the core reluctance;

[0012] 3. Leakage magnetic lines in the groove are parallel to the bottom of the groove

[0027] 1. The type and form of the groove are fixed, and the choice is single, which hinders the creativity of the designer;

[0028] 2. Only use fixed groove type, which brings difficulties to the design of some special motors;

[0029] 3. If the shape of the groove changes, the equivalent algorithm can only be used in general, and the calculation accuracy is poor, so it is not suitable for promotion;

[0030] 4. The custom groove type cannot be set in the analytical method calculation program

If you use a pen to calculate the custom groove type, the calculation is extremely difficult and time-consuming, which is not conducive to industrial production

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