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.
Direct power control (DPC) attracted wide attention due to its advantages of simple structure, quick response, strong robustness and elimination of current regulation/PWM blocks. However, conventional table-based DPC cannot work well when grid voltage is unbalanced. This paper proposes an improved DPC by using a new definition of instantaneous reactive power. As a result, the distortion in grid current...
To help the three-level PWM rectifier maintain good performance when the three-phase grid voltage is imbalanced, this paper analyzes the influence of grid voltage imbalance on the input current and the output voltage of PWM rectifier. On the basis of analyzing the instant reactive power and active power of the system, this paper adopts a method of the dual current regulations to control the imbalance;...
Three-level inverter is widely used in high voltage and high power occasions. In this paper, different modulation strategies used in three-level inverter are studied and analyzed. The harmonic characteristics of different modulation strategies were compared, and the respective relationship of harmonic characteristic, modulation degree and total harmonic distortion in different modulation strategies...
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.