Follow current energy storage degaussing device of permanent magnet synchronous motor and implementation method thereof

• Main Authors: ZHANG YONGKANG, LIU YANSHAN
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The invention discloses a follow current energy storage degaussing device of a permanent magnet synchronous motor and an implementation method thereof, and the device is additionally provided with a follow current energy storage module and a monitoring module for monitoring the degaussing completion condition for the voltage change of an energy storage capacitor on the basis of a power driving module of an existing permanent magnet synchronous motor; the follow current energy storage module comprises an MOS tube Q7, a diode VD and an energy storage capacitor C2; the diode VD is forwardly bridged between the positive electrode of the power supply and a bus for supplying power to the power driving module; the cathode of the capacitor C2 is connected with the anode of the power supply VDC;the drain electrode of the MOS tube Q7 is connected with the anode of the capacitor C2, the source electrode of the MOS tube Q7 is connected with the cathode of the diode VD, and the grid electrode of the MOS tube Q7 is connect