Method for calculating alternating-current motor stator winding coil parameters

Abstract

The invention relates to a method for calculating alternating-current motor stator winding coil parameters. The method comprises the following steps of: step 1, calculating the size of an insulated coil wire; step 2, calculating the section size of the end part and the interior of a coil groove and verifying residual space in the groove; step 2, calculating the section size of the end part and the interior of a coil groove and verifying residual space in the groove; step 3, creating a space geometric model of a coil; step 4, judging whether upper and lower edges of the coil need to be subjected to arc bending; step 5, calculating the axial projection length of the end part of the coil, the arc length of the bevel edge of the end part of the coil, the length of a central line of a straight-line part of the coil, the center distance of bent arcs at two ends of the straight-line part of the coil, and the mean turn of the coil; and step 6, calculating shuttle-shaped parameters of the coil. During coil section calculation, the situation of parallel winding of different wire gauges is considered, so that the design scheme of different winding wire gauges can be satisfied; and the space geometric model is adopted, so that pure formulation of a calculation process is realized, computer programming realization is convenient, and the consumption of winding wires is reduced.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a method for calculating coil parameters of a stator winding of an AC motor. Background technique [0002] The current specific calculation process for the calculation model and method of the coil parameters of the stator winding of the AC motor is as follows: [0003] 1. First, determine the relevant data according to the electromagnetic design and insulation process requirements of the motor; [0004] 2. According to the requirements of the coil insulation process, calculate the section size of the coil slot and the end, and verify the remaining space in the slot; [0005] 3. Use diagram method to determine the spatial position of the coil in the motor; [0006] 4. Use graph method and empirical formula to determine coil related parameters; [0007] 5. Determine the parameters of the racetrack coil according to the empirical formula and coil parameters. [0008] This calc...

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

Images