| 摘要 |
The invention relates to an alternating current winding for a rotating electrical machine and a method for production thereof from round wires with a fed-in or pull-in winding. The problem addressed is that of creating an alternating current winding and a method for production thereof from round wires, which alternating current winding permits a higher power output by largely avoiding current displacement losses or even permits the use of round wire windings for larger machines than has thus far been the case and extends the service life thereof. In a first phase of the method the winding is laid or drawn into the laminated core. The self inductances of all the sub-conductors of each individual coil are then determined by measuring technology. From the determined measurement values of all self inductances of each coil, an average value Lquer is calculated. Then those sub-conductors which have self inductances which differ considerably from the average value Lquer are split in the winding head or a region accessible after laying or drawing of the winding. The self inductances of the split sub-conductors of each coil are now determined again using measuring technology and the self inductances of the sub-conductors are then sorted according to their size. It is then established which sub-conductors will be connected together in pairs. The measured sub-conductors are then connected together such that the sum of the values of the self inductances of two connected sub-conductors scatters as little as possible around the average value Lquer. The split sub-conductors, i.e. those which are connected together in each case according to the results of the sorting, are electrically connected to a sub-conductor pair using suitable methods which are known per se. These new sub-conductor pairs are electrically insulated with respect to one another and with respect to the other winding parts in the so-called compensation point. |
