Redundant power reconfigurable fault-tolerant drive topology

Abstract

The invention provides a reconfigurable fault-tolerant type driving topological structure of a redundant power source and belongs to the field of high-reliability motor driving control systems. The reconfigurable fault-tolerant type driving topological structure of the redundant power source comprises double power sources, N H-bridges, fuses, a reconfiguration switch and the like. The reconfigurable fault-tolerant type driving topological structure of the redundant power source is characterized in that in normal work, an independent H-bridge driving topological structure is applied to each phase, reconfiguration of the driving topological structure is achieved through switching on or switching off of the reconfiguration switch on the driving topological structure, namely, a fault can be isolated through the reconfiguration switch when the open-circuit fault or the short-circuit fault occurs on the power sources, power tubes and the reconfiguration switch, according to the type of the fault and the needs, the independent H-bridge driving topological structure of each phase can be reconfigured into star-shaped driving topology, finally, the fault tolerance function is achieved, and the reliability of the motor driving control system is improved. The reconfigurable fault-tolerant type driving topological structure of the redundant power source has the advantages of being flexible in power supply, capable of rapidly and conveniently isolating the fault and conducting hardware reconfiguration, rapid, strong in fault tolerance ability, flexible in use, free of an extra fault-tolerant algorithm, high in reliability and the like.

Description

technical field [0001] The invention relates to a redundant power supply reconfigurable fault-tolerant drive topology structure, belonging to the field of high-reliability motor drive control systems. Background technique [0002] In order to improve the reliability of the motor drive system, an independent H-bridge drive topology is usually used for each phase, or a star drive topology with redundant bridge arms is used. The disadvantage of these two drive topologies is that they can only be fault-tolerant to certain faults. For example, it can only be fault-tolerant to the open circuit of the winding and the open circuit of the power tube, but it is powerless to the short-circuit fault of the power supply system and the power tube; and they are generally solidified in structure and cannot be reconfigured according to the type of fault, so they are inevitably fault-tolerant It has the disadvantages of single function and the need for additional fault-tolerant control algori...

AI Technical Summary

Problems solved by technology

[0002] In order to improve the reliability of the motor drive system, an independent H-bridge drive topology is usually used for each phase, or a star drive topology with redundant bridge arms is used. The disadvantage of these two drive topologies is that they can only be fault-tolerant to certain faults. For example, it can only be fault-tolerant to winding open circuit and power tube open circuit, but powerless to short-circuit faults of power supply system and power tube; and they are generally solidified in structure and cannot be reconfigured according to the type of fault, so they are inevitably fault-tolerant Disadvantages such as single function and need for additional fault-tolerant control algorithm

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