Space vector control method of fault tolerance system of permanent magnet synchronous motor (PMSM)
A permanent magnet synchronous motor, space vector control technology, applied in the field of power electronics, can solve the problems of open circuit fault, high failure rate of the power switch of the inverter, short circuit of the power switch, etc., to achieve the effect of strong practicability and versatility
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[0049] The invention provides a two-phase permanent magnet synchronous motor fault-tolerant system, such as figure 1 shown. It includes four inverter bridge arms, four fast-blow fuses and two bidirectional thyristors; the four inverter bridge arms are connected in parallel to the public DC power supply; the two ends of a bidirectional thyristor are respectively connected to the armature winding A and the power supply. One port of the armature winding B, the two ends of the other two-way thyristor are respectively connected to the other port of the armature winding A and the armature winding B, and the two ports of the armature winding A are respectively connected to the two inverters through the fast blow fuse The midpoints of the bridge arms are connected, and the two ports of the armature winding B are respectively connected to the midpoints of the other two inverter bridge arms through fast-blow fuses. When any bridge arm of the system inverter fails, the proposed fault-to...
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