In the following thesis I will cover research and production of the system for automatisation
of measurements of electric motors. The system is used to measure phase to phase inductances
and resistances of larger electric drive systems. Before jumping into the description, I would like
to list the problems that led to the idea and realization of the system.
I am currently working in the measurement and research department at MAHLE Electric
Drives Slovenija. Many new electric drive systems have been developed recently and we are
constantly in a time crunch in the measurement lab. Therefore, the first and main problem is time.
Manual measurements are very time consuming because it is necessary to switch between
different measurement devices and write the results manually. In addition to slower execution,
there is another problem with manual measurement, which is human error. It can be present when
we are performing measurements and also when we are writing down results. Therefore, it is
crucial for the advancement and optimization of development to automate as many measurement
procedures as possible.
The system implements measuring devices, a power supply and a relay circuit that switches
between the phases of the electric motor. The computer communicates with all devices via
ethernet communication and receives data. In the realization of the system, I needed to have a
good understanding of the operation of the electric motor and communication protocols in
automation. I drew most of the literature from the faculty and the company.
The finished system is able to automatically perform measurements on the electric motor
much faster than the manual measurement. In addition, it automatically captures and processes all
the data and prints it to an automatically generated Excel file at the end of the measurement. The
project was a success and I hope that the device will serve me and my coworkers well.
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