Practical Method for Experimental Detection of DC Motor Inertia to Design a Speed Regulator

2019 IEEE 7th IEEE Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE 2019): Proceedings 2019
Kaspars Kroičs, Rahims Geidarovs

The paper presents a practical step by step tutorial how to determine the moment of inertia and mechanical losses in DC electrical machine and use this information to design speed and current regulators. The experimental procedure for detecting moment of inertia is described in the paper. During this test the motor is accelerated above its rated speed, what can be easily done by using field weakening and then disconnecting motor from the power supply. The speed change during the time are measured and then by using mathematical expressions the moment of inertia could be found if the power losses are known. The paper provides experimental verification of separation of mechanical losses from the total armature losses. In the paper accurate and approximated mathematical models of DC motor in frequency domain are shown. Bode plot method is applied to analyze stability of speed and current regulators. The controller is implemented in digitally controlled DC-DC converter and experimental results are shown.

Keywords
electrical drives; servomotor; moment of inertia; speed control; DC machines; DC motors
DOI
10.1109/AIEEE48629.2019.8977095
Hyperlink
https://ieeexplore.ieee.org/abstract/document/8977095

Kroičs, K., Geidarovs, R. Practical Method for Experimental Detection of DC Motor Inertia to Design a Speed Regulator. In: 2019 IEEE 7th IEEE Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE 2019): Proceedings, Latvia, Liepaja, 15-16 November, 2019. Piscataway: IEEE, 2019, pp.81-86. ISBN 978-1-7281-6731-2. e-ISBN 978-1-7281-6730-5. Available from: doi:10.1109/AIEEE48629.2019.8977095

Publication language
English (en)