A Calculation Method of Stator Winding Coil Parameters of AC Motor

Abstract

The invention relates to a method for calculating coil parameters of an AC motor stator winding, which comprises the following steps: Step 1, calculating the size of the coil wire after insulation; Step 2, calculating the cross-sectional size of the coil slot and the end, and verifying the remaining space in the slot ; Step 2, calculate the cross-sectional size of the coil slot and the end, and verify the remaining space in the slot; Step 3, establish the spatial geometric model of the coil; Step 4, determine whether the upper and lower sides of the coil need to be bent; Step 5, calculate the coil The axial projection length of the end, the arc length of the hypotenuse at the end of the coil, the center line length of the straight part of the coil, the center distance of the curved arcs at both ends of the straight part of the coil, and the average turn length of the coil; step 6, calculating the shuttle shape parameters of the coil. When calculating the coil section, the present invention considers the parallel winding of different wire gauges, and can meet the design schemes of different winding wire gauges; the spatial geometric model is used to realize the pure formula of the calculation process, which is convenient for computer programming and saves the amount of winding wires .

Description

Technical field [0001] The invention relates to the field of motor manufacturing, in particular to a method for calculating the parameters of the stator winding coil of an AC motor. Background technique [0002] The specific calculation process for the calculation model and method of AC motor stator winding parameters is as follows: [0003] 1. First, determine the relevant data according to the motor electromagnetic design and insulation process requirements; [0004] 2. Calculate the cross-sectional dimensions of the coil slot and the end according to the requirements of the coil insulation process, and verify the remaining space in the slot; [0005] 3. It is used to determine the spatial position of the coil in the motor by using a graphic method; [0006] 4. Use diagrams and empirical formulas to determine coil related parameters; [0007] 5. Determine the parameters of the racetrack coil according to the empirical formula and coil parameters. [0008] This calculation method is bas...

AI Technical Summary

Problems solved by technology

[0008] This calculation method is based on the end projected view and the drawing method. During the process, drawing is required to measure the corresponding dimensions. The process is cumbersome, and a large number of empirical formulas are involved in the calculation process. It is an approximate calculation, and the calculation result is consistent with the calculator Experience has a lot to do with it. The calculation process takes a long time and the accuracy is low, especially for the calculation accuracy of the coil end size. In the actual production process, the upper side of the coil is lower than the inner diameter of the stator.

At the same time, the calculation of this method is based on one wire gauge, and the calculation process does not consider the situation that two different wire gauges are wound together and arranged in different ways. For this case, this method needs to be based on the actual Wire gauge and insulation conditions, calculate the cross-sectional area of ​​the coil slot and end, determine the equivalent wire gauge, and then draw the coil projection view by drawing to complete the calculation, the process is relatively complicated

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