Rapid optimization method for wire diameter and parallel winding number of stator winding of high-speed motor
A technology of stator winding and optimization method, which is applied in electric components, manufacturing motor generators, design optimization/simulation, etc., can solve the problems of slow optimization speed, lengthened motor development cycle, huge computing resources and optimization design time, etc. Optimized for speed, excellent performance, optimized to reduce AC loss
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Embodiment 1
[0061] A fast optimization method for the wire diameter and parallel number of stator windings of high-speed motors, such as figure 1 As shown, the fast optimization method includes the following steps:
[0062] The first step: finite element modeling, divide the stator slot into 10-20 layers in the radial direction, and use the finite element method to calculate the magnetic density data of each layer in the stator slot;
[0063] Step 2: Input the basic parameters of the motor and the flux density curve in the slot in the calculation program;
[0064] Step 3: Set the optimization interval and step size of the wire diameter and the number of parallel windings. The optimization interval and step length of the wire diameter are set to 0.3~1.5mm and 0.01~0.1mm respectively, and the optimization interval of the number of parallel windings and the step size are set to 1~50 and 1 respectively;
[0065] Step 4: Find the slot full rate in the optimization interval. The formula for c...
Embodiment 2
[0082] Taking the high-speed motor of a fuel cell air compressor with a peak speed of 100,000rpm and a rated power of 35kw as an example, the basic parameters of the motor are shown in Table 1, and the calculation conditions are shown in Table 2. Using the rapid optimization method of the present invention for the stator of the high-speed motor The winding wire diameter and the number of parallel windings are optimized. In order to reduce the skin effect, the wire diameter should not be too large, but due to the limitation of the manufacturing process, the wire diameter should not be too small. Considering both, the wire diameter The set optimization interval and step size are 0.5~1mm and 0.01mm respectively, and the optimization interval and step size set around the root number are 5~30 and 1, respectively, that is, the whole scheme is shown in Table 3.
[0083] Table 1: Basic Motor Parameters
[0084] name symbol value unit Motor speed N rpm
90000 ...
Embodiment 3
[0115] Taking a fuel cell air compressor high-speed motor with a peak speed of 100,000rpm and a rated power of 35kw as an example, the basic parameters of the motor are shown in Table 7, and the calculation conditions are shown in Table 8. The inventive method calculates the optimal scheme of the stator winding wire diameter and the number of parallel windings, compares the optimization speed of the three methods, and then compares the optimal schemes obtained by each method in terms of motor loss, motor temperature rise, wire package size, and stator winding weight , the advantages and disadvantages of the manufacturing process.
[0116] The optimization process of the empirical formula method is as follows:
[0117] In order to make the bare copper wire diameter of the enameled wire smaller than the penetration depth of the skin effect in the conductor, the maximum size of the wire diameter calculated by formula (8) is required to be r≤1.68mm.
[0118]
[0119] Among the...
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