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 interaction of power electronic converters in a microgrid can introduce system instability and power quality issues. Existing investigations focus on interactions either in low frequency regions, such as the constant power load, or in very high frequency regions like electro-magnetic interference. However, interactions of power converters around their switching frequency range are not included...
Power electronic converters are typical nonlinear systems in frequency domain. With a perturbation frequency excitation, the current and voltage of power converters in steady state contain not only perturbation but also many sidebands. In a Microgrid containing a large amount of power converters, one converter's switching frequency ripples are other converters' perturbations and beat frequency components...
Droop-controlled inverters are widely employed as power sources in three-phase AC power electronics system, such as distributed generation, while the interaction between the source and the load may lead overall system to be unstable. Terminal-characteristics based stability criteria are very attractive for analyzing the stability of three-phase AC power electronics system. However, the systems, composed...
Impedance is very important for power electronic systems because of the close relationship between impedance and system stability. The line-frequency rectifiers are commonly used ac-dc interfaces in electrical power systems. For line-frequency rectifier, with a sinusoidal voltage perturbation excitation at input terminal, input current contains not only perturbation frequency, but also multiple additional...
This paper shows a comprehensive approach to a synchronous machine emulation in the power electronics converters. It shows how to establish the electromechanical-electrical duality, re-structure the well-known machine model to resemble widely used power converter dynamic model, perform experiments on the 30 kW synchronous machine, and at the end, verify the model. Additionally, initial result of the...
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.