High Gradient Magnetic Separator for production needs high exciting power and its inductive load is great. The stabilization of outputcurrent from power supply system is difficult.
生产型高梯度磁选机激磁功率大且为大电感性负载，其供电系统输出电流很难稳定。
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Industry trends lean toward lower output voltages, more power, tighter power regulation, and faster response to changes in loadcurrent.
Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.