Abstract: Methods, systems, and devices for controlling a serial arc fault in an electrical circuit are disclosed. In some embodiments, the methods include the following: a. measuring a current in the circuit; b. determining whether the current is below a predetermined value; c. if the current is below ten percent of the predetermined value, determining whether a countdown timer value indicated by a cell pointer value is equal to zero; d. if the countdown timer value is equal to zero, starting a countdown timer, advancing the cell pointer value by one, and restarting the method at step a.; e. if the countdown timer value is not equal to zero, determining whether the interruptions in the current are periodic; f. if the interruptions in the current are not periodic, checking whether an arc event countdown timer is running; and g. if the arc event countdown timer is running, tripping a circuit breaker.
Type:
Grant
Filed:
May 12, 2009
Date of Patent:
January 18, 2011
Assignee:
Astronics Advanced Electronic Systems Corp.
Inventors:
Frederick J. Potter, James Arnold Wright
Abstract: A permanent magnet starter/generator subsystem configured in a fault tolerant architecture is described herein for small engine applications. The system allows for lighter system weight, improved system reliability, higher performance capability and reduced maintenance.
Type:
Grant
Filed:
May 25, 2007
Date of Patent:
April 29, 2008
Assignee:
Astronics Advanced Electronic Systems Corp.
Abstract: A permanent magnet starter/generator subsystem configured in a fault tolerant architecture is described herein for small engine applications. The system allows for lighter system weight, improved system reliability, higher performance capability and reduced maintenance.
Type:
Grant
Filed:
October 24, 2005
Date of Patent:
July 10, 2007
Assignee:
Astronics Advanced Electronic Systems Corp.
Abstract: A permanent magnet starter/generator subsystem configured in a fault tolerant architecture is described herein for small engine applications. The system allows for lighter system weight, improved system reliability, higher performance capability and reduced maintenance.
Type:
Grant
Filed:
April 23, 2004
Date of Patent:
June 20, 2006
Assignee:
Astronics Advanced Electronic Systems Corp.
Abstract: A system for locating parallel arcing faults in a set of wires is described. The system includes three devices that can be used in combination or alone. A first device applies a current to a wire while grounding the remaining wires of the set of wires so as to cause the parallel arc, the first device being adapted to locate the parallel arcing fault using one or more leading edges of one or more electromagnetic waveforms being conducted on the wire under test. A second device comprises a controller and two or more receivers, each receiver being electrically coupled to the controller for receiving one or more leading edges of one or more electromagnetic waveforms being radiated by the parallel arcing fault. A third device senses one or more leading edges of one or more electromagnetic waveforms as well as the ultrasonic emissions emitted from the parallel arcing fault.