Ryoma Yamamoto
Integration System Department, System Technology Development Center,
Corporate Technology Division,
Kawasaki Heavy Industries, Ltd.

Abstract

Our company has a variety of product lines, and many require high-speed rotating machines. We have developed magnetic bearing technology as one of the core technologies to realize high-speed rotating machines such as these. Magnetic bearings can rotate at high speeds while holding the rotor without any mechanical contact. Other advantages include zero mechanical loss and no need for lubricating oil. Analysis design technology, such as magnetic field analysis, are very important in the development of magnetic bearings. This time we investigated a method to run analysis at an even higher accuracy, and evaluated the validity of this method with actual measurements. This material presents the results of that investigation. In addition, by using this analysis with the even higher accuracy, we also evaluated the performance of the magnetic bearings. Their performance was increased by making changes to the geometry, the results of which we will also present.