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.
A number of different steps are necessary to develop power-electronic systems: After preparation of a concept, the layout of the controller is made based on simulation. The process is finalised by implementation and test on the power-electronic system itself. A successful final test requires, however, that the controller hardware controlling the power-electronic system functions properly. Additionally,...
Railway grid interaction is a major concern when developing the power train of a railway traction vehicle and its control. Two main areas have to be taken into account: line-current harmonics and inter-harmonics are limited with often extremely low limit values compared to nominal current, respecting the properties and safety issues of railway track circuits. Grid stability is influenced by the varying...
Traction vehicles operating in the single-phase 16.7-Hz-railway grid-typical for central Europe - employ a resonant circuit connected in parallel to the DC-link capacitor. The resonant circuit is necessary to take up the unavoidable grid power pulsation with double frequency, leaving a smooth DC-link voltage. In reality grid-voltage frequency and resonance frequency of the resonant circuit do not...
Actually, AC 16.7-Hz railway grids are fed via back-to-back converters from the public grid. A flux-based multivariable control for the three-phase-side converter is presented, which takes the resonant circuit of the single-phase-side converter into account, leading to excellent stationary and dynamic behaviour.
Railway grid interaction is a major concern when developing the power train of a railway traction vehicle and its control. Two main areas have to be taken into account: Line current harmonics are limited - with often extremely low limit values, compared to nominal current - respecting the properties and safety issues of railway track circuits. Grid stability is influenced by the varying grid impedance...
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.