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 grid-connected LCL-filtered inverter is widely used in distributed power generation systems based on renewable energies. Single inverter-side current feedback control only needs to sample one current to realize both current control and inverter protection. However, with single inverter-side current feedback control, the closed-loop system is under-damped or even unstable due to the digital control...
A new single-stage and boost-voltage grid-connected inverter with low-frequency current ripple (LFCR) reduction was presented in this paper. It can be applied in fuel cell generation system. The signal modulation method was given within a line cycle. In the proposed inverter, an inverter bridge-leg was shared by Boost converter, which decreased the cost and improved the efficiency of the system. The...
An -type filter is widely used in the grid-connected inverter. However, with only injected grid current control, the current harmonics and low bandwidth caused by the resonance peak cannot be tolerated. The active damping (AD) method with an extra feedback provides a high rejection of the resonance so that the dynamic is improved; however, the high-precision sensing circuit for the extra feedback...
The under-damped resonance phenomenon in grid-tied LCL-filtered inverters yields much difficulty in designing the controller. By adding one or more state feedback, the multi-variable feedback control methods are commonly used. However, the revealed studies are quite limited and cannot explain the essential mechanism of the multi-variable feedback control. In this paper, a systematic analysis method...
A ZVS bi-directional DC-DC converter for high-low voltage conversion is analyzed in this paper. A novel control scheme adopting one port voltage regulated and another port current regulated is proposed to realize the energy conversion in bi-directional freely. A start-up circuit is presented for eliminating the surge current in boost mode. The operation characteristics and parameter design are 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.