DC Superposition Characteristic Measurement of Reactors and Comparison with the measured values

Kouhei Ueda
TABUCHI ELECTRIC CO., LTD. Transformer Development Dept.


Among the parameters of Reactors, as to the inductance characteristics, stable Inductance over wide range of DC superposed current range. In oder to achieve this, the design of gap at the core is a very important factor to prevent core saturation.
In the initial stage of conventional design routine, the gap length or locations have been determined by the repetitive prototyping of the reactors and this method was obvisouly time consuming and very costly approach for agile engineering.
In order to reduce the prototyping and improve the accuracy of design, we at Tabuchi, have been using CAE software such as JMAG and we succeeded in the reduction of prototype numbers by the engineering simulation for optimum gap length and locations.
This time, the comparison of CAE result and actual measured results on DC superimposition of reactors has been done. It has been found that simulation did not not reflect the measured value at the early stage of project. The deviation was found due to the minor hysteresis loop on major hysteresis curve. Therefore, actual differential permeability and incremental permeability have been measured and the result was modeled to JMAG modules to get the close simulation result on JMAG analysis.

To read Proceedings, please sign-in.

Protected content here, for members only.
You need to sign in as a Regular JMAG Software User (paid user) or JMAG WEB MEMBER (free membership).

By registering as a JMAG WEB MEMBER, you can browse technical materials and other member-only contents for free.
If you are not registered, click the “Create an Account” button.

Create an Account Sign in 

Remember me
Sign In
Create an account (Free) About authentication ID for JMAG website

Search Filter

  • All Categories

Proceedings Archives