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.
Jeśli w pojeździe trakcyjnym są zastosowane silniki asynchroniczne zasilane z falowników, to fakt ten nie wpłynie znacząco na jakość ich pracy ze względu na odfiltrowanie napięcia wejściowego falownika w obwodzie pośredniczącym (filtrze wejściowym) falownika. Niemniej występujące w napięciu wyjściowym prostownika wyższe harmoniczne napięcia, zależne nie tylko od liczby pulsów układu przekształcającego...
Dc tram traction voltage is obtained by rectifying grid ac voltage with help of transformer-rectifier sets. In Poland typically 6- or 12-pulse systems are used. 24-pulse system may be achieved by parallel operation of two Yyd transformers with primary windings arranged as zigzag. This paper deals with 24-pulse system design using cost-effective transformer with partially integrated secondary windings...
To obtain rectified voltage needed for d.c. traction networks, different types of energy transformation circuits may be used. This paper deals with 6- and 24-pulse transformer-rectified set operation under different supply condition. Commutation issues have been investigated for Yd transformer supplied with sinusoidal and distorted voltage. It has been shown that supply voltage THD factor affecting...
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.