Elevator system with an electric motor

摘要

The drive has an electrical motor that is subdivided into a number of segments (12, 14), where converters (16, 18) are assigned to each of the segments. The electrical motor has a stator and a rotor, where the stator is subdivided into the segments in a circumferential direction. Each winding in the stator is designed as individual windings, where each coil (28) of the stator winding is designed in a concentrated form. Independent claims are also included for the following: (1) a method for monitoring a spring pressure-operated brake (2) a braking device for an elevator drive for executing a method for monitoring a spring pressure-operated brake.