Fault Diagnosis and Fault-tolerant Operation of Current Source Inverter for Safety-Critical Applications

Fard, Majid T.; He, Jiangbiao; Wang, Zheng

doi:10.1109/itec48692.2020.9161725

Cited by 13 publications

(4 citation statements)

References 18 publications

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“…The driver output is a square current with an amplitude of I dc , and the motor current is a sinusoidal curve with an amplitude of 6.3 A. According to Equation (15), the utilisation ratio of the dc-link current is 0.606, which is in good agreement with the theoretical value.…”

Section: Normal Operation Experimentssupporting

confidence: 70%

“…In addition, due to the presence of inductors in the dc-link, CSIs possess an inherent capability for short-circuit protection. The inverter output is equipped with capacitive filters that effectively reduce both the dv/dt and electromagnetic interference (EMI) [15,16]. As a result, the inverter generates waveforms that are more conducive to motor operation.…”

mentioning

confidence: 99%

“…In ref. [15], a fault-tolerant control of SPOF for a three-phase PMSM supplied by CSI with a fourth leg is achieved by reconstructing the faulty phase. However, this method requires additional switches.…”

mentioning

confidence: 99%

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An ampere‐second‐vector pulse width modulation technique and fault‐tolerant control for CSI11 fed five‐phase permanent magnet synchronous motor with multiple harmonic electromotive forces

Chen,

Sun

et al. 2023

IET Electric Power Appl

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When dealing with safety‐critical applications that involve multiphase permanent magnet synchronous motors (PMSMs), the current source inverter (CSI) is a superior choice compared with the voltage source inverter. The conventional technique of pulse width modulation (PWM) presents a challenge for CSI, particularly during faults. The fault‐tolerant control of multiphase PMSMs fed by CSIs has not been well investigated, particularly in situations involving double‐phase open‐circuit faults. Furthermore, fault‐tolerant control becomes more complex when the multiphase PMSM includes harmonic back electromotive forces (EMFs). To deal with these issues, an ampere‐second (AS) vector PWM technique is developed for a five‐phase PMSM powered by CSI11. The modulation ratio of the proposed PWM is identical to that of space vector PWM. The proposed method, however, is easier to implement. A fault‐tolerant control method using AS‐vector is proposed for single‐phase, adjacent double‐phase, and non‐adjacent double‐phase open‐circuit faults. Additionally, a method is developed to suppress the torque ripple that results from harmonic back‐EMFs during fault conditions. Compared without the torque ripple suppression method, during the speed rising, the proposed method can reduce torque ripple to 16.7%, 54.5%, and 37.5%, respectively. The experiments have confirmed the effectiveness of the proposed PWM technique and fault‐tolerant control method.

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Section: Normal Operation Experimentssupporting

confidence: 70%

mentioning

confidence: 99%

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An ampere‐second‐vector pulse width modulation technique and fault‐tolerant control for CSI11 fed five‐phase permanent magnet synchronous motor with multiple harmonic electromotive forces

Chen,

Sun

et al. 2023

IET Electric Power Appl

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“…A novel method for detecting OCF in the single and double IGBT modules of grid-side converters (GSC) was proposed by J. Zhang et al in 2020 [13]. M. T. Fard et al in [14] presented the OCF in the current source inverter (CSI). Methods for identifying OCF in the IGBT-based inverter were presented by S.S. Moosavi et al in 2019 [15].…”

Section: Introductionmentioning

confidence: 99%

Expeditious Identification of IGBT Switch Fault in Bidirectional Microgrid Inverter Linked to Distributed Energy Resources

Ghosh,

Chattopadhyay,

Arigela

et al. 2024

J. Nano- Electron. Phys.

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In contemporary power electronics, Insulated Gate Bipolar Transistors (IGBTs) are extremely important for various reasons. IGBTs serve as vital components in microgrid inverters, providing the switching capabilities required to transform DC electricity from renewable sources into high-quality AC power for microgrid (MG) applications. A bidirectional inverter (BDI) is an essential component of a microgrid, allowing for the smooth integration of distributed energy resources (DERs) and supporting both gridconnected and islanded operations. In a bidirectional DC/AC inverter (BDAI), IGBTs play an important role in managing the flow of electricity in both directions. The consequences of bidirectional inverter's IGBT failures on a microgrid might vary from small power quality concerns to more serious interruptions in stability and system performance. Therefore, IGBT should operate without failure. This paper illustrates a method for identifying an early IGBT switch failure (ISF) in a bidirectional microgrid inverter that is linked to a photovoltaic (PV) and battery energy storage system (BESS). An analysis of the inverter output current signal using the Fast Fourier Transform (FFT) has been undertaken to discover faults. Afterwards, the impacts on the DC, fundamental current component, and harmonic distortions have been investigated for various levels of fault. A successful detection of the ISF has been attempted, based on the best-fit features. An ISF detection algorithm also has been proposed.

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Fault tolerant control strategy for modular PWM current source inverter

Shi

2022

Front. Energy

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Fault Diagnosis and Fault-tolerant Operation of Current Source Inverter for Safety-Critical Applications

Cited by 13 publications

References 18 publications

An ampere‐second‐vector pulse width modulation technique and fault‐tolerant control for CSI11 fed five‐phase permanent magnet synchronous motor with multiple harmonic electromotive forces

An ampere‐second‐vector pulse width modulation technique and fault‐tolerant control for CSI11 fed five‐phase permanent magnet synchronous motor with multiple harmonic electromotive forces

Expeditious Identification of IGBT Switch Fault in Bidirectional Microgrid Inverter Linked to Distributed Energy Resources

Fault tolerant control strategy for modular PWM current source inverter

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