Control sequencing and prognostics health monitoring for digital power conversion and load management
First Claim
1. An apparatus for control sequencing and prognostic health monitoring of an electrical power system of a vehicle, the electrical power system including power rectification/inversion equipment for AC-DC, DC-AC, and/or AC-DC-AC power conversion and power distribution equipment for distributing converted power to one or more loads of the vehicle, said apparatus comprising:
- a data measuring unit for obtaining measurement values of at least one electrical component of the electrical power system;
a prognostic health monitoring and diagnostic unit for identifying out-of-range conditions for said electrical component as a function of said measured values, said prognostic health monitoring and diagnostic unit further identifying overload conditions for said electrical component based on past and present measurement values and identifying trend violations as a function of said measurement values to assess future operation of said electrical component; and
a decision making unit for controlling transition between a plurality of operating modes based on conditions identified by said prognostic health monitoring and diagnostic unit, said decision making unit controlling the transition between said plurality of operating modes to selectively continue operation of said electronics power system of said vehicle in a fail-safe fashion despite conditions identified by said prognostic health monitoring and diagnostic unit and to selectively initiate autonomous restart of said power rectification/inversion equipment following a fault condition identified by said prognostic health monitoring and diagnostic unit.
1 Assignment
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Accused Products
Abstract
An electronics-based system (100) for power conversion and load management provides control sequencing and prognostic health monitoring and diagnostics for fault tolerant operation of the system. The system (100) includes a prognostic health monitoring and diagnostic unit (30) for identifying present out-of-range conditions, overload conditions, and trending violations, for components of the system and a decision making unit (20), which controls transitions between a plurality of operating modes to ensure fail-safe operation without unnecessary tripping, cold-starts or system resets upon the occurrence of certain fault conditions.
89 Citations
26 Claims
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1. An apparatus for control sequencing and prognostic health monitoring of an electrical power system of a vehicle, the electrical power system including power rectification/inversion equipment for AC-DC, DC-AC, and/or AC-DC-AC power conversion and power distribution equipment for distributing converted power to one or more loads of the vehicle, said apparatus comprising:
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a data measuring unit for obtaining measurement values of at least one electrical component of the electrical power system; a prognostic health monitoring and diagnostic unit for identifying out-of-range conditions for said electrical component as a function of said measured values, said prognostic health monitoring and diagnostic unit further identifying overload conditions for said electrical component based on past and present measurement values and identifying trend violations as a function of said measurement values to assess future operation of said electrical component; and a decision making unit for controlling transition between a plurality of operating modes based on conditions identified by said prognostic health monitoring and diagnostic unit, said decision making unit controlling the transition between said plurality of operating modes to selectively continue operation of said electronics power system of said vehicle in a fail-safe fashion despite conditions identified by said prognostic health monitoring and diagnostic unit and to selectively initiate autonomous restart of said power rectification/inversion equipment following a fault condition identified by said prognostic health monitoring and diagnostic unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for control sequencing and prognostic health monitoring of an electrical power system of a vehicle, the electrical power system including power rectification/inversion equipment for AC-DC, DC-AC, and/or AC-DC-AC power conversion and power distribution equipment for distributing converted power to one or more loads of the vehicle, said method comprising:
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obtaining measurement values of at least one component of the electrical power system; performing prognostic health monitoring and diagnostics to identify out-of-range conditions for said electrical component as a function of said measured values, overload conditions for said electrical component based on past and present measurement values, and trend violations as a function of said measurement values to assess future operation of said electrical component; and controlling transition between a plurality of operating modes based on conditions identified by said step of performing prognostic health monitoring and diagnostics, said controlling step controlling the transition between said plurality of operating modes to selectively continue operation of said electronics power system of said vehicle in a fail-safe fashion despite conditions identified by said prognostic health monitoring and diagnostic unit and to selectively initiate autonomous restart of said power rectification/inversion equipment following a fault condition identified by said step of performing prognostic health monitoring and diagnostics. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification