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德兴铜矿是江西铜业公司最大的矿山,至今已有80％左右的泵类设备电机和给矿设备电机安装了变频调速装置。变频调速装置所匹配的电机都为普通的Y型系列电机,普通的Y型电机能否在变频调速装置的电源下正常地工作,也就成了我们关注的问题。特别是我国提供的电源基频为50Hz,而电机的运行频率有时要提高到60Hz、70Hz,也有时要降低为30 Hz、20 Hz。此时电机的性能又会怎样变化呢?本文就针对这个问题作初步讨论和分析。
Dexing Copper Mine is the largest copper company in Jiangxi Province, so far about 80% of the pump equipment and motor equipment to the mine motor frequency control device installed. The matched motor of the frequency conversion speed regulation device is an ordinary Y series motor, and whether ordinary Y type motor can normally work under the power of the frequency conversion speed regulation device becomes our concern. In particular, China provides the basic frequency of 50Hz power supply, and the motor operating frequency sometimes increased to 60Hz, 70Hz, sometimes reduced to 30Hz, 20Hz. At this point how the performance of the motor will change? This article on the issue for the preliminary discussion and analysis.