Fault Diagnosis and Tolerant Control for Sensors of PWM Rectifier Under High Switching Frequency

Gong, Zifeng; Jadoon, Habib Ullah Khan; Huang, Deqing; Qin, Na; Ma, Lei

doi:10.1109/safeprocess45799.2019.9213426

Cited by 4 publications

(3 citation statements)

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“…In a measurement failure or communication breakdown scenario, techniques such as DC voltage and AC frequency control are used to cope with a signal deficiency [60][61][62][63][64][65][66]. Network-level faults include three-phase systems and refer also to power quality issues, including phase unbalance.…”

Section: General Classificationmentioning

confidence: 99%

“…In Ref. [60], the authors propose replacing an erroneous measured value with the output of a state observer for the rectifier stage of a basic single-phase to three-phase PEC. The exciting item is the design of the observer to be digitally implemented, preventing its output from chattering because of the discretization procedure of the PEC model.…”

Section: Measurement-level Fault Tolerance Techniquesmentioning

confidence: 99%

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An Overview on Fault Management for Electric Vehicle Onboard Chargers

et al. 2022

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Onboard charging systems (OBCs) convert AC power from an external charging source into a DC voltage used to charge the battery pack of an electric vehicle (EV). OBCs are versatile since they can convert energy from almost every AC source, including standard household electrical receptacles, without needing wall chargers or charging stations. Since the same motor-drive electronics are reconfigured for onboard charging, weight and cost barely increase. However, the power quality and reliability of the OBCs are essential elements for proper grid interconnection. This article reviews the failures of power electronic converters that can be used for onboard charging and their most prominent fault-tolerance techniques. The various fault-tolerance methods are evaluated and compared in terms of complexity, cost, and performance to provide insights for future developments and research directions.

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Section: General Classificationmentioning

confidence: 99%

Section: Measurement-level Fault Tolerance Techniquesmentioning

confidence: 99%

An Overview on Fault Management for Electric Vehicle Onboard Chargers

et al. 2022

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“…This method locates the fault location by analyzing the residual signal generated by the observer group. For the fault of current sensor under high-frequency switching, [12] proposed to replace the discrete switching state with the approximately continuous variable of the duty ratio of the switch in the state observer, which effectively reduced the output fluctuation of the observer under high-frequency switching state switching, and improved the accuracy of current estimation. For multiple current sensor faults, the state space equation is established in [13].…”

Section: Introductionmentioning

confidence: 99%

Fault diagnosis for multiple current sensors in grid‐connected inverter based on average modulation voltage

Zhang,

Jin

et al. 2023

IET Power Electronics

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Grid‐connected inverters are the core equipment in the renewable power system. There are multiple current sensors which may affect the driving module of the switch in inverter. In multiple current sensor fault diagnosis, the coupling between fault components makes fault diagnosis difficult. This paper presents an offset fault diagnosis method of multiple current sensors based on the average modulation voltage model. Based on the influence of current sensor offset fault in the system, the average modulation voltage model is established in three‐phase stationary coordinates. The difference between the measured value of the current and the actual value is estimated through the model when the offset fault occurs. And then the fault is located. Experimental results show that the fault can be located accurately and fault tolerant control can be performed by this method when there are offset faults in multiple sensors simultaneously.

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