Overview of a Multifunctional Sensor Module for Electric Drives based on Contactless Measurement Techniques

In electric drives stator temperature, rotor position and speed are measured using distributed Sensors. The measured properties are used in the control algorithm as well as to ensure the safe operation of the drive. In this contribution a novel Sensor module will be presented, which does not just combine the functionality of conventional sensors, but adds upon these by capturing further machine properties such as rotor temperature and vibration patterns. This enables improvements in controllability, safety and state of health analysis of the drive. In addition to the multifunctionality, the sensors measurement approaches are based on innovative contactless methods not used before in this context.