C2.1 - Wireless Sensor for Temperature and Flux Measurements in an Axial Flux Machine
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- C2 - Applications
- A. Bock, J. Funck, A. Giedymin, C. Gühmann - TU Berlin (Germany), D. Liu, R. Burke - University of Bath (United Kingdom)
- 361 - 366
In recent years there has been an increasing interest into electric and hybrid electric vehicles. Axial flux permanent magnet (AFPM) machines appear to be very promising for these applications. To fully exploit the potential of the electric machine to provide short burst of mechanical power higher than the rated continuous power, highly accurate dynamic models of its thermal behavior are needed. To parameterize and validate these models the temperatures and magnetic flux densities on the rotor need to be measured during operation. This contribution presents the design and implementation of a smart wireless sensor for this purpose. An inductive power supply enables a dependable, continuous operation of the sensor without the need for batteries. Signal processing on the wireless sensor ensures an efficient use of the available wireless bandwidth. The mechanical integration of the sensor into the motor as well as its connection to an existing motor test bench are discussed. The operation of the sensor is verified during experiments in a climate chamber as well as on a motor test bench. The presented wireless sensor enables unprecedented measurements at an AFPM machine and can be easily extended with additional sensor in future experiments.