HIGH-VOLTAGE PERMANENT MAGNET FREQUENCY CONVERSION ALL-IN-ONE MACHINE

摘要

A high-voltage permanent magnet frequency conversion all-in-one machine (100). The frequency conversion all-in-one machine (100) comprises: a frequency converter (102), used for performing frequency conversion on a high-voltage alternating current and outputting same, at least three alternating currents being output; a permanent magnet motor (103), used for receiving the alternating current subjected to the frequency conversion and output by the frequency converter (102), so as to drive the motor (103) to operate; and a controller (101), configured to be used for controlling the frequency converter (102) to perform the frequency conversion on the high-voltage alternating current, and used for controlling an operating state of the permanent magnet motor (103). Multiple outputs are used in a topology of the frequency converter (102), and thus a voltage of each output is relatively reduced, thereby reducing the requirement on a rated voltage of a power device. Then, a special plug-in mode for an energy storage capacitor (501) is used in the frequency conversion all-in-one machine (100), so that the volume of the frequency converter (102) is reduced; a special winding mode is used in the permanent magnet motor (103), so as to be connected to the multiple outputs of the frequency converter (102).