凤凰彩票

永磁(ci)(ci)(ci)同(tong)步(bu)电(dian)(dian)(dian)(dian)机根据启动(dong)(dong)方式的(de)不(bu)同(tong)一般分为(wei)异步(bu)启动(dong)(dong)永磁(ci)(ci)(ci)电(dian)(dian)(dian)(dian)机和变频启动(dong)(dong)永磁(ci)(ci)(ci)电(dian)(dian)(dian)(dian)机，两者均采用高性能稀土永磁(ci)(ci)(ci)材料。转(zhuan)子结(jie)构中，鼠笼(long)式为(wei)异步(bu)起(qi)动(dong)(dong)永磁(ci)(ci)(ci)电(dian)(dian)(dian)(dian)机，可工频电(dian)(dian)(dian)(dian)源(yuan)直接(jie)起(qi)动(dong)(dong)，异步(bu)起(qi)动(dong)(dong)同(tong)步(bu)运行(xing)，也可变频器V/F控(kong)制方式运行(xing)。而(er)变频起(qi)动(dong)(dong)永磁(ci)(ci)(ci)电(dian)(dian)(dian)(dian)机转(zhuan)子的(de)结(jie)构没有鼠笼(long)，必须(xu)由变频器驱动(dong)(dong)，以(yi)矢量控(kong)制方式运行(xing)，起(qi)动(dong)(dong)电(dian)(dian)(dian)(dian)流小，节(jie)能效(xiao)果更好。

两(liang)者在使用中的优缺点。

1.启(qi)动(dong)时，永(yong)磁电(dian)(dian)机的(de)变频(pin)会平稳启(qi)动(dong)，对电(dian)(dian)网(wang)没(mei)有任(ren)何电(dian)(dian)流冲击；异步起(qi)动(dong)永(yong)磁电(dian)(dian)机和(he)瞬时起(qi)动(dong)过程中，起(qi)动(dong)电(dian)(dian)流会很(hen)大，一般是额定电(dian)(dian)流的(de)6-7倍，对电(dian)(dian)网(wang)影响(xiang)很(hen)大。

2.从运行可靠性来说，变频永磁(ci)电机远(yuan)比异步起动永磁(ci)电机可靠稳定，因为变频器对电机有保护功能(neng)，在(zai)电机电流过大(da)或其他故障时会保护。

3.材料成本方面，由于(yu)两种转子(zi)的(de)(de)结构(gou)差异，异步起动永(yong)磁(ci)电机的(de)(de)成本高(gao)于(yu)变频起动永(yong)磁(ci)电机的(de)(de)成本，变频起动永(yong)磁(ci)电机的(de)(de)价格相对更优惠。

4.同步就不(bu)(bu)错，转(zhuan)速也一(yi)样。一(yi)般(ban)客户(hu)选择永磁(ci)(ci)(ci)电(dian)机时，觉得异(yi)(yi)步启(qi)动(dong)(dong)永磁(ci)(ci)(ci)电(dian)机更(geng)划算，不(bu)(bu)用(yong)(yong)变(bian)频器(qi)，成本低。其实并(bing)不(bu)(bu)是。从外观(guan)上看是，但(dan)在实际应用(yong)(yong)中，建议客户(hu)选择变(bian)频器(qi)永磁(ci)(ci)(ci)电(dian)机。从节(jie)能(neng)效(xiao)果(guo)(guo)考虑，变(bian)频永磁(ci)(ci)(ci)电(dian)机长期运(yun)行电(dian)流更(geng)小，效(xiao)率更(geng)高，节(jie)能(neng)效(xiao)果(guo)(guo)优于异(yi)(yi)步启(qi)动(dong)(dong)永磁(ci)(ci)(ci)电(dian)机。还可以通过变(bian)频器(qi)调整(zheng)到实际工况(kuang)，让电(dian)机做功更(geng)精准(zhun)，少做无(wu)用(yong)(yong)功率。