| RAILPOWER TECHNOLOGIES CORP. Patent applications |
| Patent application number | Title | Published |
|---|
| 20090278489 | LOSSLESS DYNAMIC BATTERY EQUALIZER SYSTEM AND METHOD - A system and method dynamically equalizes battery voltages with low inherent power losses in a string of series connected electrochemical batteries. The method includes charging/discharging a group of batteries using magnetic storage in a transformer with bipolar magnetic excursion, individually isolated circuits and pulsed energy transfer. A method also exchanges current between batteries using direct current transfer between them and limiting inductance. Using this method, battery voltage may be measured from an isolated circuit, thus enabling information transfer to a central monitoring system. The method also has the benefit of providing an estimation of battery internal resistance from isolated circuits in the series of batteries. | 11-12-2009 |
| 20090101041 | TRANSVERSAL GENERATOR SET AND MODULAR DESIGN FOR REFURBISHMENT OF LOCOMOTIVES - A generator set has a transversal configuration on the locomotive. The generator set and its configuration on the platform offer good performance with respect to the space it occupies along the length of the locomotive platform deck, and offer better access for maintenance purposes. A walkway interface structure supports a modular design for locomotives using standardized major sub-assemblies that can be easily interfaced from one locomotive and under-frame to another. | 04-23-2009 |
| 20080296970 | Multiple Prime Power Source Locomotive Control - The present invention is directed to a control strategy for operating a plurality of prune power sources ( | 12-04-2008 |
| 20080246338 | MULTI-POWER SOURCE LOCOMOTIVE CONTROL METHOD AND SYSTEM - Control modes for operating multiple power sources include energy storage systems and applicable to large systems such as locomotives. Selectable operating modes are provided for different locomotive speed ranges and work loads. A common DC bus electrical architecture is used so that prime power sources need not be synchronized. Multiple-engine locomotives have the engine systems that may be electrically connected in parallel or in series or in combinations of parallel and series to a DC bus. | 10-09-2008 |
