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.
Industrial installations require high reliability and performance, especially when the power system has a low short-circuit level and non-linear loads injecting harmonics which can generate electromagnetic interferences EMC/EMI threatening functionality and safety related with control and protection systems. Conventional passive harmonic filters compensate reactive power, and reduce parallel resonances...
The matrix converter features natural bidirectional power flow, sinusoidal current/voltage waveforms, and a reduced size and weighty compared to standard direct static power converters. However, it is sensitive to polluted AC supplies because no storing elements are present and thus any disturbance would reach the load terminals. Typical disturbances in the AC distribution systems are voltage unbalances,...
This paper presents a modified predictive current control strategy which allows one to have control over the spectrum of the load current. The proposed method uses a model of the system to predict the behavior of the current for each possible voltage vector generated by the inverter. For that purpose, at each sampling interval, signal predictions are evaluated using a cost function that quantifies...
In this paper the problem of current control in high power converters using low frequency, precalculated switching patterns is addressed. To overcome the problem of switching harmonics feeding through the current controllers a harmonic prediction and compensation method is devised. The good performance of the method is tested extensively through simulation of an three level PWM rectifier modulated...
Multicell converters are one of the alternative topologies for medium voltage industrial drives. For application requiring regenerative capability each power cell must be constructed with a three- or single-phase PWM rectifier as a front end. The choice of single-phase PWM rectifiers for the input of the cells results in a reduced number of power switches and a simpler input transformer than the three-phase...
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.