Invention Application
US20140339940A1 METHOD FOR OPERATING A THREE-PHASE INVERTER OF A CONVERTER-FED MAGNETIC BEARING 有权
转换器磁力轴承三相逆变器的运行方法

METHOD FOR OPERATING A THREE-PHASE INVERTER OF A CONVERTER-FED MAGNETIC BEARING
Abstract:
In a method for operating a three-phase inverter of a converter-fed magnetic bearing, two coils are connected to respective outputs of the three-phase inverter at one end and are connected to each other and to a third output of the three-phase inverter at the other end. A variable control current is injected into the third output. A constant bias current flows between the respective outputs and thus serially through the two coils. The control current is divided among the two respective outputs so as to flow parallel through the two coils. This arrangement significantly reduces the effective current load of the three-phase inverter and significantly increases the slew rate of the control current.
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