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.
The stability of grid-connected voltage-source inverters (VSI) is deteriorated in a weak grid due to the interaction between the increasing grid impedance and the inherent inverter impedance. To improve the stability of LCL-filtered VSI, an impedance-phase reshaping method is proposed in paper. With this output current feedback compensator, the phase margin at the impedance intersection can be improved...
The nonlinear loads in microgrid not only distort the voltage but also degrade the harmonic power distribution in a conventional droop-controlled microgrid. This paper starts with analyzing the trade-off between voltage total harmonic distortion (VTHD) and harmonic sharing effectiveness. A multi-framed droop controller is proposed to improve the harmonic power sharing without deteriorating VTHD by...
This paper proposed a voltage-type droop control method for the parallel multi-inverter system to realize power sharing without an interconnection line, and its power sharing principle is analyzed in detail. After that, a small-signal model of the multi-inverter system, which contains $l$ lines, $d$ nodes, $s$ inverters, and $p~RL$ loads, is established for system stability analysis. Then...
Keeping the equalization of the DC capacitor voltage is one of the critical problems for the reliable operation of the cascaded H-bridge multilevel STATCOM. In this paper, a novel coordinated DC voltage control strategy for H-bridge cascaded STATCOM is proposed to solve this above problem without extra infrastructures. This control strategy is a two-level hierarchy which consists of a predicted central...
Conventional parallel inverter system always includes control functions for interconnections. It is challenging to develop an effective control method for seamless parallel connection for multi-inverters. A communicationless digital parallel inverter system is designed and developed by the authors and reported in this paper. Considering the influence of resistance on the output impedance of an inverter...
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.