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.
This paper focuses on the digital control technique and its industrialization of high-power three-phase three-level rectifier system. Firstly, the mathematical model of three-phase three-level VIENNA rectifier is established. The multiloop control method is realized based on the DQ coordinates, and a simplified three-level space vector pulse width modulation method which could simplify the calculation...
In this study, a three-level hybrid dc/dc converter by integrating the full-bridge circuit, resonant circuit and three-level flying capacitor circuit is presented to achieve the main advantages of low-voltage stress of power devices, low circulating loss, low-voltage ringing on the rectifier diodes and low-output filter inductor for medium-voltage dc-based systems. Two full-bridge circuits are connected...
A passivity-based power control method is proposed for the three-phase three-level NPC rectifier in this paper. The decoupled control of active and reactive power of the three-level NPC rectifier in the dq reference frame can be realized by the proposed method. The neutral point voltage is controlled by adjusting the dwelling time of the small vectors. The proposed modeling and control strategy are...
In this paper, a new control strategy based on the passivity-based control theory of Euler-Lagrange (EL) systems is proposed for a unity-power-factor PWM rectifier. The proposed regulators are based on an energy shaping and damping injection scheme. Since the passivity-based methodology is a nonlinear approach, excellent transient response and global stability can be assured under large perturbations...
A nonlinear mathematical model of three-phase voltage source PWM rectifier is established in the dq rotating frame. Aiming at the poor dynamic performance of conventional PI controlled three-phase PWM rectifier, a control system with double close-loops of voltage and current is designed based on the mathematical model of 3-phase PWM rectifier. A sliding-mode control algorithm on synchronous rotating...
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.