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.
In modern drive systems, electrically excited machines (ESM) have become an interesting alternative to those excited by permanent magnets. The excitation winding is normally supplied by a slip ring system that (in automotive applications) has to be protected against environmental influences like wetness, oil and dust. To increase the power density of ESM, brushless excitation systems based on rotationally...
In modern automotive drive applications, Electrically Excited Synchronous Machines (ESM) have become an alternative to PSMs. Until now, ESMs need slip-rings to supply the rotor winding. However, carbon brush slip-ring systems are sensitive to environmental influences and produce conductive carbon dust during operation. This paper discusses the construction of a contactless energy transfer system to...
A power conditioner with a high voltage gain for a combined heat and power generation system based on a solid oxide fuel cell is presented in this paper. The power conditioner consists of two dc-to-dc stages: an interleaved boost converter with minimized input current ripple and a series resonant converter. By analytic investigation, a pre-estimation of the converter's efficiency is shown and a method...
This paper deals with a current-fed full bridge dc-dc converter. By the results of an analytical investigation, the impact of the transformer's winding ratio, its leakage inductance and dimension of input inductor on the converter's efficiency is emphasized. Out of this, design considerations for the converter are given. Experimental results, taken from a 1.2 kW prototype, are shown.
In this paper, an overview of the, for a converter design most important, fuel cell characteristics is given. Different DC-DC converter topologies are presented. Their qualification for a low-input voltage, high-input current application is discussed. A comparison of the converters is given with regard to the power range they are appropriate for. The limiting factors for the transferable power are...
This paper deals with a single phase current- fed full bridge converter with high voltage gain for fuel cell applications. The clamping circuit is implemented by an auxiliary buck converter. An analytical investigation is given, describing the operating behaviour of the converter completely. This includes a distinction of the three operating modes: continuous mode, discontinuous mode and buck mode...
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.