Open-circuit fault diagnosis method for dual-active-bridge DC-DC converter
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- SOUTHWEST JIAOTONG UNIV
- Publication Date
- 2021-04-27
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of fault diagnosis of power electronic systems, and in particular relates to an open circuit fault diagnosis method of a dual active bridge DC-DC converter. Background technique
[0002] As a general power conversion topology, the dual active bridge DC-DC converter has been applied to various important power conversion systems due to its advantages of high power density, strong control flexibility, and modular design, such as electric vehicles, storage energy systems and power electronic transformers. With the increasing reliability requirements of power electronic converters, the problem of fault diagnosis in dual active bridge DC-DC converters has attracted more and more attention.
[0003] Power modules are the most fragile semiconductor devices, and their faults can be roughly divided into open circuit faults and short circuit faults. Short circuit faults mainly include switch short circuit, antiparall...