What is it about?
The method developed in this paper using a DC source for measuring the inductance in a DC machine overcomes some problems associated with traditional methods by using an alternating current source. In particular, it enables the field winding to carry its rated DC.
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Why is it important?
This approach has demonstrated the feasibility of taking measurements for inductance in a DC machine and providing its field current that is sufficient to lead magnetic saturation, such that the flux can be kept the same as the supplied flux to the running DC machine. The proposed method for measuring both self-inductance and mutual inductance of the DC machine armature winding coils has played a main role in modeling DC machines under a wide range of operating conditions.
Perspectives
This new approach solves some problems affected by the inherent mutual magnetic coupling relationship between coils in the machine winding. The research results have provided good evidence that both healthy and faulty DC machines can be modeled mathematically. Experimental results have shown that the measured inductance values are adequately accurate to be established in the machine’s model, and it may be achievable for modeling electric machines in future engineering applications.
Dr Ning Chuang
University of New South Wales
Read the Original
This page is a summary of: Developing measuring inductance strategies on a direct current machine using a DC source with magnetic saturation, International Journal of Circuit Theory and Applications, September 2015, Wiley,
DOI: 10.1002/cta.2127.
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