Aircraft variable frequency alternator anti-parallel control circuit
By simplifying the LACTR hardwired interlock logic and interlock wiring design, the problem of accidental parallel connection caused by errors in the aircraft variable frequency AC motor parallel controller is solved, improving the safety and reliability of the system, preventing parallel connection of AC sources, and protecting the motor and electrical equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- COMMERCIAL AIRCRAFT CORP OF CHINA LTD
- Filing Date
- 2026-04-28
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, when aircraft variable frequency AC motors are connected to the grid in parallel, controller errors or unexpected program issues can cause contactors to be connected in parallel unexpectedly, which may damage the motors and affect electrical equipment. Furthermore, the hard-wired interlock design is prone to failure, reducing system reliability.
Design a parallel control circuit for an aircraft variable frequency AC generator. By simplifying the LACTR hard-wired interlocking logic, hard-wired interlocking is achieved using interlocking connections, reducing the number of hard wires and auxiliary contacts, and improving system reliability.
Without affecting the power grid control logic, it significantly improves the safety and reliability of the system, prevents accidental parallel connection of AC sources, and enhances the protection of motors and electrical equipment.
Smart Images
Figure CN122418818A_ABST