All results can be displayed graphically, presenting users with a clear and unambiguous portrayal of design changes. In the case of the inrush current test, for example, the calculated results include the Lorentz forces on the primary and secondary windings, eddy currents in any support structures, iron losses in the transformer core, and transformer efficiency. Once an analysis has been completed, the TE3D environment automatically sends the results to the Opera Manager to be solved. User options include performing open circuit, short circuit and inrush current tests on transformers and mutual inductance tests on reactors. The simulation analysis phase is also automated. There is also an option to modify the device and circuits following the initial build to enable precise matching of designs, and the analysis options available within the environment can be used to analyse devices not constructed within it. All aspects of transformer design can be modelled through the environment, including multiple air gaps and placement of the core inside a conductive tank. It accommodates both racetrack and solenoid type single and multiple layer windings and most of the commonly used winding connections specified in the international IEC 60076-1 standard for power transformers. The software allows a variety of common transformer types to be created, including three phase, three and five leg core, and single phase two and three leg core.
After entering this data, the software automatically creates a three dimensional finite element model of a reactor or transformer, together with independent drive and load circuits within the circuit editor for subsequent simulation and analysis. Users are presented with simple dialog boxes and drop down menus to define a new transformer or reactor design. Cobham says the software is suitable for both new and experienced transformer engineers, as it simplifies the process of entering design data for industry standard transformer designs and interpreting results. TE3D is designed to make it easy to employ advanced and precise finite element analysis simulation to evaluate design ideas.
According to the software specialist, its new 3D Transformers Environment (TE3D) provides a graphical user interface for rapidly designing transformers and reactors using the company's Opera-3d finite element electromagnetic simulation package.
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