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.
As the penetration level of wind power increases, displacing conventional power generation with wind power will reduce the inertia of power system and decrease the frequency stability. Energy storage devices with only 5% energy storage of wind farm's rated capacity can produce the same virtual inertia as a same capacity synchronous generator. To reduce the additional costs of individual energy storage...
A modular multilevel converter (MMC) integrated with split battery modules has been verified a better choice for the large-scale battery energy storage system (BESS). In this case, both ac grid and dc grid can exchange power with the BESS while the power transfer between ac and dc grids can be decoupled. However, without the ability to ride through dc grid fault, the performance and reliability of...
This paper proposes a novel modular multilevel dual-active-bridge (MMDAB) dc-dc converter for spilt-battery energy storage system (BESS) in medium-voltage dc (MVDC) grid application. The proposed converter can be derived from conventional DAB converter and therefore exhibits favorite characteristics of galvanic isolation, inherent zero-voltage-switching (ZVS) condition and small passive components...
Because of high cost of battery, BESS is not suitable for the situation when the demand of active power is less than that of reactive power. A novel STATCOM based on the hybrid cascaded multilevel converter is proposed to provide limited active power support. Meanwhile, this topology doesn't have the drawback of cascaded H-bridge BESS. The characteristic of output power for this topology is studied...
This paper addresses a dual active bridge isolated DC-DC convertor into a cascaded battery energy storage system(BESS) with an additional benefit of medium frequency galvanic isolation. The topology, named as multi-level cascaded medium frequency isolated cascaded power conversion system is presented in the beginning of this paper to improve the performance of cascaded BESS. Its working principles,...
Cascaded H-bridge converter (CHBC) is a popular approach for massive battery energy storage system (BESS) connected to the medium-voltage grid. However multi-objective needs, including power control, state of charge (SOC) control, fault tolerant control and so on, makes the control system complicated. A unified control scheme is proposed in this paper. By evaluating the other control objects and power...
The health state evaluation method is one of the key technologies of Prognostic and Health Management (PHM). Through the health assessment of the satellite power system, it can timely find the potential trend of health degradation and hidden danger of influence of health level, thus improving the level of effectiveness, precision and autonomation of the power system management. Firstly, it analyzed...
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.