Voltage Space Vector Equivalent Substitution Fault-Tolerance Control for Cascaded H-Bridge Multilevel Inverter with Current-Tracking

Li, Guohua; Liu, Chunwu; Wang, Yufeng

doi:10.3390/electronics9010093

Cited by 8 publications

(7 citation statements)

References 22 publications

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“…Redundancy in the sensor and fuel actuators is adopted in Amin and Mahmood-ul-Hasan 13 to prevent the engine cutoff in the event of simultaneous failures in several sensors and to prevent a single point of failure owing to an actuator malfunction. The article 14 proposes an FTC approach for H-bridge inverters with current tracking based on voltages vectors equivalence substitutions.…”

Section: Literature Reviewmentioning

confidence: 99%

Reliable speed control of a separately excited DC motor using advanced modified triple modular redundancy scheme in H-bridges

Saeed

Usman

Amin

2022

Advances in Mechanical Engineering

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The risk of danger in industries is increasing due to the unexpected shutdowns owing to the unwanted faults in the components. These faults can also lead to a complete failure of the system causing costly production losses and safety issues. Therefore, Fault-Tolerant Control (FTC) techniques are used for such systems to get better reliability, and safety to prevent faults. This paper presents a Modified Triple Modular Redundancy (MTMR) based fault-tolerant system for a separately excited Direct Current (DC) motor with a Fault Detection and Isolation (FDI) unit that can detect, isolate, and replace the faulty switch with the standby switches to prevent the unwanted shut down of the system and support the process continuity thereby increasing reliability. The proposed MTMR will still be able to provide output with only one healthy switch with the other two in the faulty conditions. MATLAB/Simulink software was used for the experimentation process to check the performance of the system. The presented work establishes that the MTMR-based fault-tolerant H-bridge with the FDI unit is a highly reliable solution for the speed control of a separately excited DC motor. The comparison of the proposed work with existing works also demonstrates its superior performance.

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Section: Literature Reviewmentioning

confidence: 99%

Reliable speed control of a separately excited DC motor using advanced modified triple modular redundancy scheme in H-bridges

Saeed

Usman

Amin

2022

Advances in Mechanical Engineering

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“…Generalized quarter-waves of SCM waveform with odd-symmetry, representing the normalized phase voltage waveforms of 3𝜙-MLIs, are presented in Figure 1c,d for odd and even values of N, corresponding to MLI topologies of the cascaded H-bridge (CHB) [15][16][17] and diode-clamped converter (DCC) [18][19][20] phase-legs illustrated in Figure 1a,b, respectively. Both waves in Figure 1 may be generally represented by a unified expression [14]:…”

Section: The Proposed Lthd Expressionmentioning

confidence: 99%

Analytical Expression for Line Voltage THD of Three-Phase Staircase Modulated Multilevel Inverters

2022

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In this article, a simple closed-form analytical expression for the line-voltage total harmonic distortion (LTHD) of three-phase staircase-modulated (SCM) multilevel inverters (MLI) is proposed. The revealed expression is valid for any conventional MLI topology with arbitrary number and parity of voltage levels. The proposed formulation is presented as an analytic function of the number of voltage levels (N) and the phase switching angles (PSA); thus, it is suited to MLIs of equal voltage source supply and of any topology. This function may be employed for accurate LTHD calculation and optimization. The results are verified against LTHD calculations and optimizations, obtained numerically from previous works. Both processor in loop (PIL)- and controller + hardware in loop (C-HIL)-based real-time experimental validations are included as well. A downloadable file containing the Maple and MATLAB functions of the proposed expression are also provided.

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“…Accordingly, numerous fault tolerance methods were proposed in the literature for conventional topologies. Some researchers have focused on tolerating the faults by inserting additional hardware parts to the basic topology, which results in increasing the system cost which could be regarded as a huge drawback and adding complexity to the control and the hardware design [27][28][29][30]. Accordingly, the usage of the available vectors instead of the impossible vectors are applied for T-type inverter as shown in [31].…”

Section: Physical Model Of Hanpc Invertersmentioning

confidence: 99%

“…The main purpose was to maintain additional paths for the current in the case of device failure. Similarly, in [29] and [30], the fault-tolerant capability for different topologies converters was investigated; where the proposed fault-tolerant method in [29] focused on the equivalent substitution of voltage space vector for cascaded H-bridge multilevel inverter. While, in [30], the proposed method applied for NPC/H-bridge (CNHB) inverters.…”

Section: Introductionmentioning

confidence: 99%

Open-Circuit Fault Tolerance Method for Three-Level Hybrid Active Neutral Point Clamped Converters

2020

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Three-level converters are the most important technologies used in high power applications. Among these technologies, active neutral point clamped (ANPC) converters are mainly used for industrial applications. Meanwhile, recent developments have reduced losses and increased efficiency by using a hybrid combination of Si-IGBT and SiC-MOSFET switches to achieve hybrid ANPC (HANPC) converters. Open-circuit failure is regarded as a common and serious problem that affects the operational performance. In this paper, an effective fault-tolerant method is proposed for HANPC converters to safely re-utilize normal operation and increase the reliability of the system under fault conditions. Sequentially, regarding different topologies with reference to earlier fault tolerance methods which could not be applied to the HANPC, the proposed strategy enables continuous operation under faulty conditions effectively without using any additional devices by creating new voltage references, voltage offset, and switching sequences under the faulty conditions. Consequently, no additional costs or changes are associated with the inverter. A detailed analysis of the proposed strategy is presented highlighting the effects on the voltage, currents, and the corresponding total harmonic distortion (THD). The simulation and experimental results demonstrate the capability and effectiveness of the proposed method to maintain normal operation and eliminate the output distortion.

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Voltage Space Vector Equivalent Substitution Fault-Tolerance Control for Cascaded H-Bridge Multilevel Inverter with Current-Tracking

Cited by 8 publications

References 22 publications

Reliable speed control of a separately excited DC motor using advanced modified triple modular redundancy scheme in H-bridges

Reliable speed control of a separately excited DC motor using advanced modified triple modular redundancy scheme in H-bridges

Analytical Expression for Line Voltage THD of Three-Phase Staircase Modulated Multilevel Inverters

Open-Circuit Fault Tolerance Method for Three-Level Hybrid Active Neutral Point Clamped Converters

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