Title:
PROTECTION SYSTEM FOR AIRCRAFT ELECTRIC PROPULSION MOTOR AND MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP2022192007
Kind Code:
A
Abstract:
To provide a system and a method for providing differential protection for an electric propulsion system which overcomes a defect of a prior art.SOLUTION: There is provided a method and an apparatus for detecting and characterizing arc faults in an aerospace electric propulsion system and then coordinating the operation of various elements of the protection system to execute a fault-clearing sequence. In a current-based method, the arc is detected and characterized based on differential readouts from current sensors. The difference between currents measured at two ends of a protection zone are compared to a difference threshold. In a power-based method, the arc is detected and characterized based on differential readouts from voltage and current sensors. The differential voltage and current readouts are used to compute the respective powers at two ends of a protection zone. The difference between the respective powers is integrated over a period of time and then the integrated difference is compared to a difference threshold. A differential protection trip mode is invoked when the difference threshold is exceeded.SELECTED DRAWING: Figure 1
Inventors:
VYACHESLAV KHOZIKOV
EUGENE V SOLODOVNIK
FREDERIC LACAUX
KAMIAR J KARIMI
EUGENE V SOLODOVNIK
FREDERIC LACAUX
KAMIAR J KARIMI
Application Number:
JP2022068785A
Publication Date:
December 28, 2022
Filing Date:
April 19, 2022
Export Citation:
Assignee:
BOEING CO
International Classes:
H02M7/48
Attorney, Agent or Firm:
Murayama Yasuhiko
Tatsuhiko Abe
Shinpei Kuroda
Choe Yun
Tatsuhiko Abe
Shinpei Kuroda
Choe Yun