Novel Circuit and Method for Fault Reconfiguration in Cascaded H-Bridge Multilevel Inverters

Mhiesan, Haider; McCann, Roy; Farnell, Chris; Mantooth, Alan

doi:10.1109/apec.2019.8721999

Cited by 4 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A stratified reconfiguration carrier disposition SPWM fault-tolerant control strategy for a ship's PMSM drive system is proposed. Compared to the inverter topology with additional devices [26][27][28][29]31,34,35], the proposed method is only based on software. This makes it useful for ships where space is limited.…”

Section: Discussionmentioning

confidence: 99%

“…Once one IGBT faults, the whole H-bridge cell will be cut off, and o healthy H-bridge cells will be reconfigured to work in the five-level operation. The o method in [34] involves the PWM control forcing the corresponding IGBTs on or off faulty H-bridge is in a forward or reverse bypass state. In contrast, the response tim…”

Section: Fault-tolerant Statementioning

confidence: 99%

“…However, the switches used in those articles are electromechanical switches, which are slow to respond compared to semiconductor devices. In addition, the method in [34,35] proposes a novel inverter topology. They can also quickly respond when a fault occurs.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Fault-Tolerant Control Method Based on Reconfiguration SPWM Signal for Cascaded Multilevel IGBT-Based Propulsion in Electric Ships

Zhang,

Zhang

et al. 2024

JMSE

View full text Add to dashboard Cite

Electric ships have been developed in recent years to reduce greenhouse gas emissions. In this system, inverters are the key equipment for the permanent-magnet synchronous motor (PMSM) drive system. The cascaded insulated-gated bipolar transistor (IGBT)-based H-bridge inverter is one of the most attractive multilevel topologies for modern electric ship applications. Usually, the fault-tolerant control strategy is designed to keep the ship in operation for a certain period. However, the fault-tolerant control strategy with hardware redundancy is expensive and slow in response. In addition, after fault-tolerant control, the ship’s PMSM may experience shock and overheating, and IGBT life is reduced due to uneven switching frequency distribution. Therefore, a stratified reconfiguration carrier disposition Sinusoidal Pulse Width Modulation (SPWM) fault-tolerant control strategy is proposed. The proposed strategy can achieve fault tolerance without any extra hardware. A reconfiguration carrier is applied to improve the fundamental amplitude of inverter output voltage to maintain the operation of the ship’s PMSM. In addition, the available states of faulty H-bridge are fully used to contribute to the output. These can improve the life of IGBTs by reducing and balancing the power loss of each H-bridge. The principles of the proposed strategy are described in detail in this study. Taking a cascaded H-bridge seven-level inverter as an example, simulation and experimental results verify that the proposed strategy, in general, has a potential future application on electric ships.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Fault-tolerant Statementioning

confidence: 99%

See 1 more Smart Citation

A Fault-Tolerant Control Method Based on Reconfiguration SPWM Signal for Cascaded Multilevel IGBT-Based Propulsion in Electric Ships

Zhang,

Zhang

et al. 2024

JMSE

View full text Add to dashboard Cite

show abstract

“…Another advantage of the control is its low power design. A comparison table from earlier state-of-art research from other studies [26][27][28][29][30][31][32][33][34][35] presented in Table 6. The proposed structure uses comparatively more number of semiconductor switches, but the rating of switches remains same.…”

Section: Comparison With Other Ft Structurementioning

confidence: 99%

“…Moreover, the circuit is complex and expensive. In other studies, [27][28][29] the FT structures are proposed with the aim to isolate each switch in the event of OCF. The demerit for the schemes is complexity as the circuit uses relatively more number of relays, fuses, or more number of switching devices.…”

Section: Comparison With Other Ft Structurementioning

confidence: 99%

Performance analysis of novel fault‐tolerant multilevel inverter with a pristine methodology for fast and exhaustive real‐time failure of switches

Anand

Singh

2021

Circuit Theory & Apps

View full text Add to dashboard Cite

Multilevel inverter (MLI) provides a high power density, though the number of devices increases the chances of failures increases, reducing the reliability of power converter. It is essential to detect, isolate, and reconfigure the faults which arises in MLI. The research proposed here is capable of accomplishing the complete fault tolerance against single and multiple devices for both open circuit and short circuit faults. The control algorithm for operation of singlepole-double-throw (SPDT) relays. This methodology is capable of completely preserving the normal operating condition in post-fault condition also. The output voltage waveform matches by voltage sensors connected across load, and the controllers sense the faults originated from the variation in the look-up-table (LUT) and also categorize the nature of the faults. Fieldprogrammable gate array (FPGA)-based controller sends a command signal through SPDT to isolate the faulty switches by redundant switches. In this way, the output power across the load is preserved. This research article also covers the comparative study that is made with the existing fault-tolerant structures. The reliability comparison shows the better performance indices over conventional cascaded H-bridge (CHB) inverter. The simulation and experimental results validate the effectiveness of control methodology to achieve complete fault tolerance.

show abstract

A Multiple Fault-tolerant Multilevel Inverter with Hybrid Cascaded H-bridges

Babu

2022

2022 IEEE 19th India Council International Conference (INDICON)

View full text Add to dashboard Cite

Novel Circuit and Method for Fault Reconfiguration in Cascaded H-Bridge Multilevel Inverters

Cited by 4 publications

References 6 publications

A Fault-Tolerant Control Method Based on Reconfiguration SPWM Signal for Cascaded Multilevel IGBT-Based Propulsion in Electric Ships

A Fault-Tolerant Control Method Based on Reconfiguration SPWM Signal for Cascaded Multilevel IGBT-Based Propulsion in Electric Ships

Performance analysis of novel fault‐tolerant multilevel inverter with a pristine methodology for fast and exhaustive real‐time failure of switches

A Multiple Fault-tolerant Multilevel Inverter with Hybrid Cascaded H-bridges

Contact Info

Product

Resources

About