Patent ID: 6275392
Filing Date: 2001-08-14
Classification: H02M

Abstract:
An apparatus for use with an AC voltage source generating an AC voltage, the source selected from one of a plurality of AC voltage sources, each source characterized by a source specific characteristic impedance, a converter and an inverter linked by positive and negative DC supply lines, a pre-charge component linking the supply lines and having a pre-charge voltage level, the apparatus for adjusting the pre-charge level as a function of the source and comprising:a control module that correlates AC sources with source specific pre-charge levels, the module including a source identifier for identifying the source linked to the regulator and, based on which source is linked, indicating a specific pre-charge level;a sensor for sensing the pre-charge component voltage;a controller linked to the inverter to control the inverter, the controller receiving each of the specific pre-charge level and the pre-charge voltage and, when the pre-charge voltage is less than the pre-charge level, modifying inverter control until the pre-charge component charge increases to the pre-charge level.