Patents Assigned to Ballard Power Systems Corportion
  • Two-level protection for uninterrupted power supply
    Publication number: 20050105229
    Abstract: Method and apparatus for determining transient power source defects versus nontransient, grid failures result in power being selectively applied to a DC bus for application to a load by either the power source, a rechargeable DC power supply, or both. The severity of the power interruption determines the degree to which the power will be supplied to a load through a power converter assembly by either an AC source or a rechargeable DC power supply.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 19, 2005
    Applicant: Ballard Power Systems Corportion
    Inventors: Duo Deng, Kenneth Farkas