线圈计算(国外英文资料).doc

线圈计算(国外英文资料) Generally speaking, for high-voltage motors, the winding insulation structure should be taken into account 1: turn to turn insulation: 1: good technology, can guarantee the integrity and the wire insulation between coils, but in the drawing process, it can allow the coil nose turn a certain relative movement, protection interturn insulation not be broken (due to the polyester film containing the work). 2: the mechanical strength is higher, because this kind of mica tape has a high mechanical strength polyester film, so that the overall tensile strength of mica band is not less than 1MPA 3: higher insulation strength. The choice of class B insulation can improve the overload ability and operation reliability of the motor. Two: Calculation of inter turn insulation to be accurate. If the calculation results than the actual thickness is too small, turn to turn the amount of compression is insufficient, will cause the line to turn the bond is not real, affecting the coil linear size after hot pressing of the accuracy of the calculation results; if the thickness is larger than the actual, the insulation thickness effect. For example, 0.14 6KV 25 three in one Mica Mica Tape and semi stack wrapped type coil are taken as an example. The calculation method is as follows: The coil is partially wrapped and the height of the ground before insulation is A A=0.42W+na (mm) The coil line is partially wrapped and the width of the ground before insulation is B B=0.45+b (mm) In N, the root of the electromagnetic line along the height of the loop. W coil turns. Three: slot insulation 1: to consider the motor voltage rating size and operating environment 2: groove margin, groove wall flat, in addition to electrical strength enough, must be combined with groove inside the uneven condition to consider the mechanical strength of groove insulation. 3: to take into account the coil in the groove to withstand the ground phase voltage, the groove in different phases of the coil bet