A novel fault detection circuit for short-circuit faults of IGBT

Kim, Min‐Sub; Park, Byoung-Gun; Kim, Rae-Young; Hyun, Dong-Seok

doi:10.1109/apec.2011.5744621

Cited by 25 publications

(7 citation statements)

References 8 publications

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“…This method detects the short-circuit fault by comparing the gate input voltage V GG and gate voltage V GE [14,15]. Figure 22 Figure 23 shows the turn-on switching characteristic of the IGBT under the normal condition.…”

Section: Gate Voltage Comparing Methodsmentioning

confidence: 99%

Faults and Diagnosis Systems in Power Converters

Lee

Choi

2014

Advanced and Intelligent Control in Power Electronics and Drives

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A power converter is needed in almost all kinds of renewable energy systems and drive systems. It is used both for controlling the renewable source and for interfacing with the load, which can be grid-connected or working in standalone mode. Further, it drives the motors efficiently. Increasing efforts have been put into making these systems better in terms of reliability in order to achieve high power source availability, reduce the cost of energy and also increase the reliability of overall systems. Among the components used in power converters, a power device and a capacitor fault occurs most frequently. Therefore, it is important to monitor the power device and capacitor fault to increase the reliability of power electronics. In this chapter, the diagnosis methods for power device fault will be discussed by dividing into open-and short-circuit faults. Then, the condition monitoring methods of DC-link electrolytic capacitor will be introduced.

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Section: Gate Voltage Comparing Methodsmentioning

confidence: 99%

Faults and Diagnosis Systems in Power Converters

Lee

Choi

2014

Advanced and Intelligent Control in Power Electronics and Drives

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“…A digital-controlled method is proposed to simplify the hardware design using the microcontroller. Compared with the previous works [17,19,20] which replied on the discrete analog ICs and logic gates, this method is more flexible since the microcontroller is part of power electronics system, which brings little increase in the hardware cost. 2.…”

Section: Introductionmentioning

confidence: 99%

“…The SC fault can be categorized into two types: hard switching fault (HSF) and fault under load (FUL), which are defined by the time when the SC fault happens at the turn‐on transition and on‐state, respectively. Several SC protection circuits have been proposed in the early works, including desaturation [8–10], current [11],

di/dt

[12, 13], DC‐link voltage [14], gate voltage [15, 16] and gate charge [17–20], and a SC protection time below 1

\umu

s was achieved. The desaturation detection is the most widely used solution with lots of off‐the‐shelf gate driver integrated chips (ICs) [21, 22].…”

Section: Introductionmentioning

confidence: 99%

A digital‐controlled gate charge detection circuit for short‐circuit protection and condition monitoring of SiC MOSFET

Yin

Liu

Xiong

et al. 2022

IET Power Electronics

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The safe and reliable operation of power converter requires a protection circuit with fast response when the power device is subjected to the short‐circuit (SC) fault. In addition, the on‐line condition monitoring circuit is beneficial to provide a suggestion for the replacement of aged device. The silicon carbide (SiC) power devices promise the higher power density in the system performance, but is still limited by the poor SC reliability issue. Thus, it is crucial to improve the robustness of SiC‐based power converter from the circuit design. This work proposes a novel gate charge detection circuit for SiC devices. It achieves a high‐speed SC protection against hard switching fault (HSF) based on the difference of Miller capacitance between normal condition and SC fault. Meanwhile, the condition monitoring is achieved based on the high gate leakage current of aged device. A high‐precision analog amplifier circuit is designed to acquire the gate signal. The normal/fault signal is distinguished and the protection is triggered using a digital‐controlled method to reduce the hardware cost. A 600‐ns SC response time is achieved, and the monitoring circuit can differentiate the aged device from the healthy one.

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“…The method presented in [27] is based on gate voltage comparison. This method is simple, but it needs additional hardware for fast detection.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Fault Detection to Ensure the Safe Operation of the Single-Phase Five-Level VIENNA Rectifier

et al. 2021

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This work aims to explore and evaluate the nonreversible AC/DC five-level structure from the point of view of its operational safety: high electrical security on internal destruction and continuity in operation. It only has low-voltage monotransistor cells (Si and SiC 600 V max) and is intrinsically tolerant to imperfection control and parasites, therefore naturally secure. The design and lab-test of fault monitoring and fault diagnosis with just one voltage sensor of a single-phase five-level VIENNA rectifier were proposed. This real-time diagnostic method allows for a safe stop or corrective control strategy based on the reconfiguration of the modulation. The reconstruction strategy allows for optimization of the current and voltage signals as well as power factor. A continuous post-fault operation can be achieved for critical applications. An experimental prototype 3 kW/230 VAC/800 VDC/32 kHz was created to validate the proposed fault diagnosis method and reconfiguration control method.

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A novel fault detection circuit for short-circuit faults of IGBT

Cited by 25 publications

References 8 publications

Faults and Diagnosis Systems in Power Converters

Faults and Diagnosis Systems in Power Converters

A digital‐controlled gate charge detection circuit for short‐circuit protection and condition monitoring of SiC MOSFET

Real-Time Fault Detection to Ensure the Safe Operation of the Single-Phase Five-Level VIENNA Rectifier

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