ABSTRACT
In many practical applications, the equivalent reluctance network method (RNM) approach has proven to be the simplest and the most user-friendly method. It is the clearest method for busy engineers, because they can very easily grasp the analogy between the water flow in pipes, the current flow in electric circuits, and the magnetic flux flow in magnetic circuits. However, the secret of success is hidden in sophisticated pre-calculation of parameters, which nevertheless is mostly not required from the RNM-3D regular users. The secret of the RNM-3D success is that these programs are based on an Expert System, with deep scientific fundamentals of a Knowledge Base. Programs of the RNM-3D class are broadly used in plenty of transformer works all over the world, including Poland, Russia, the United States, Canada, India, Italy, Spain, Portugal, China, Japan, Australia, Mexico, Brazil, Iran, and others.
