Scientific paper ID 1012 : 2014/3

The appropriate information support is necessary for the implementation of vector control on the asynchronous drives in the contemporary electric vehicles: bits of information about the actual values of drive parameters must be given to control system in real time. The most important drive parameters are current, voltage and speed of the motor. Sensors which are specific to such applications are used for this purpose.

In the paper, methodology and algorithm of sensors tests are developed. In this paper, some sensors are examined: current transducer, instrumentation amplifier, rotary encoder. They are specific to contemporary electric vehicles. Their static input-output characteristics are experimentally plotted and compared to the nominal. The absolute, relative and reduced errors in steady state operation are calculated. The values of the conversion factor of these sensors are specified. Thus an experimental verification of the developed methodology as well as of such sensors applicability in contemporary electric vehicles is done.