In the maintenance saturation coefficient invariable situation, after the adjustment electrical machinery core length reduced 11mm, the electrical machinery fixed movement spot, the effect

    Basically leads to be invariable, the power factor, the biggest torque multiple, the starting moment multiple has the enhancement, the electrical machinery hot load drops Is losing

    The aspect, the rotor aluminum consumes, 杂散 consumes, the wind 摩� basic is invariable, 铜� drop, 铁� increase This plan has only made the simple adjustment,

    By no means most superior design result

    To the different power rank electrical machinery, the plan adjustment strategy has a difference The low power electrical machinery because 铜� far is bigger than 铁�, but

    Takes the bigger iron core magnetism to be dense, reduces the core length, since 铜� and 铁� the change compensates, also reduces the effective material amount used, falls

    Low cost; To a power bigger electrical machinery, because of 铜�, 铁� the difference are not many, then must balance 铜� and 铁� the change degree, but not

    Is pursues constantly reduces the core length, the lower iron core magnetism is densely advantageous to reducing 铁� increases the degree In order to obtain well supposes 计结

    Fruit, but also may consider the change electricity 机槽 parameter, changes the winding wire gage and so on other measures So long as coordinates adjusts the design variable, does not change

    Changes the electrical machinery performance by the low trademark cold rolling silicon steel belt substitution hot rolling silicon steel plate generally all is feasible, also possibly obtains to the low power electrical machinery

    Performance index enhancement

    As for the manufacture craft aspect, the cold rolling silicon steel belt has the very high size precision and the surface roughness, brings superior to the manufacture

    The spot is the hot rolling silicon steel plate hard to compare In addition, low trademark cold rolling silicon steel belt degree of hardness is low, is extremely advantageous to the high speed punch press application,

    Along long expensive precise 冲模life

    4 conclusions

    This article take Y series asynchronous machine as an example, discussed the different power rank loss of machine distributed situation, is cold with the low trademark

    Rolls over the silicon steel belt substitution hot rolling silcon steel instant electric machine design plan the adjustment characteristic, and has produced the Y132M-4 asynchronous machine use

    50W800 silicon steel belt example The cold rolling silicon steel belt comparatively hot rolling silicon steel plate has the obvious superiority, by low trademark cold rolling silicon steel belt substitution

    The hot rolling silicon steel plate can powerfully alleviate the supply and demand and the price contradiction, advances "Leng"dai "hot" the advancement The research indicated, in electricity

    When machine design, uses the low trademark cold rolling silicon steel belt substitution hot rolling silicon steel plate is feasible

     [ 5 ]