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.
In order to meet the requirement for wide range speed regulation in permanent magnet synchronous motor (PMSM) control, the flux-weakening control strategy based on the method of voltage limit circle gradient descent is proposed. Firstly, the principle of flux-weakening control is introduced in the paper, on the basis of this, the flux-weakening area has been determined according to the voltage-limit...
The interlinking converter in an AC/DC hybrid micro-grid plays a crucial role in the stable operation and power allocation of power system. A bidirectional droop control method for the converter is proposed, which measures the power demand degree of AC sub-grid and DC sub-grid according to AC bus frequency and DC bus voltage respectively, and determines the direction and magnitude of the converter...
The controller, based on differential geometry theory, is designed by transforming the nonlinear system to an equivalent linear system. An analysis of a single-machine infinite-bus power system indicates that the margins of dynamic stability are larger than the margins of conventional linear controllers.
The article presents a new switch-mode power amplifier based on a cascade multilevel topology. The amplifier adopts phase-shifted PWM technology and enjoys a switching frequency, which is 2N times of that of a single unit. It has a small total output voltage ripple and only requires a small filter to suppress the switching frequency harmonics. The article lays emphasis on the design of the sliding...
Under the pressure of air pollution and oil shortage of transportations, hydrogen as a renewable and clean energy gets more and more attentions from all over the world. Nowadays, for the cost and not matured technology of fuel cell stack, hybrid system becomes the best solution. For a 5-ton fuel cell hybrid electric bus discussed in this paper, high-pressure PEMFC and high-power NiMH battery pack...
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.