SYNCHRONOUS MOTOR DRIVING SYSTEM

摘要

A synchronous motor driving system is provided to perform stable synchronous driving even though acceleration and deceleration values are changed or load inertia is changed. A synchronous motor driving system includes a plurality of synchronous motors(3) and one inverter(4). The plurality of synchronous motors have a skew-magnetized magnet rotor. The one inverter synchronously drives the plurality of synchronous motors. The inverter automatically controls an output voltage by performing a feed forward calculation operation according to load inertia, and acceleration and deceleration values at the time of performing acceleration driving and deceleration driving by changing an output frequency. The inverter softly starts at the time of the acceleration driving including ignition. The inverter softly stops at the time of the deceleration driving including a stoppage. The synchronous motor has multiple-phase stator wiring. The multi-phase stator wiring has an impedance protector function. A transfer device(1) uses the synchronous motor driving system. The synchronous motors drive a driving roller(2). A transferred material(5) mounted on the driving roller is transferred by the rotation of the driving roller.