Sensorlose Positionserfassung in linearen Synchronmotoren

In permanently excited synchronous machines, a method for carrier signal-based sensorless position evaluation will be investigated. Specifically, the focus will be on the linear drive. A three-pole rotor is moved manually. The saturation in the stator teeth leads to a position-dependent change in inductance. In this work, the zero-sequence voltage at an isolated star point is used for evaluation. First, the signal quality is improved in an experimental setup. Subsequently, the method is examined in more detail and the results are presented.