METHOD AND SYSTEM FOR FAST SWITCHING BACKUP POWER SUPPLY IN MULTIPLE POWER SOURCE

摘要

The present invention discloses a method and system for fast switching between multiple backup power supplies. The method comprises: building, on the basis of the changing characteristics of the amplitude difference and phase angle difference of a bus voltage, an acceleration model for the changing speed thereof; selecting an optimum backup power supply from the multiple backup power supplies by way of forecasting the changed value thereof; and switching the load on the bus to the optimum backup power supply. The system comprises: a detecting module, a calculating module, a comparison module, a backup power supply determining module, and a switching module. The method and system of the present invention is able to ensure the reliable and optimized fast switching of the load on a bus.