The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Due to the continuing progress in power electronics technologies, a drive frequency of electrical machine such as a reactor and a transformer can be changed arbitrarily. Consequently, it is expected that a reactor or a transformer is downsized by higher frequency for saving space. When these electrical machines which have iron core are driven by high frequency, the iron losses of iron core increase...
Laminated cores are widely used in many electrical applications such as transformers, reactors or electrical machines. They are responsible for iron losses, which depend mainly on the magnetic material itself, the core shape and the working conditions such as frequency and magnetic flux density. Materials with better magnetic properties than those of conventional electrical steel have been investigated...
This paper covers the proposed method to maximize the driving efficiency for interior permanent magnet synchronous motors considering iron loss and cross-magnetic saturation effects. Using a simple repetition calculation method, the proposed method automatically determines the optimum current command in real-time. This method not only maximizes the driving efficiency but also realizes high-precision...
A new sputtering source (named an SPT target) was modified so as to enable high-rate deposition and continuous fabrication of Co-Cr composite perpendicular recording media. In order to improve the orientation and crystallinity of the Co-Cr layer and the permalloy backlayer, the aperture position was optimized and a magnetic return path plate was added to the target. The Co-Cr tape medium deposited...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.