Reliability of different levels of cascaded H-Bridge inverter: An investigation and comparison

Hardas, R. G.; Munshi, Aniket P.; Kadwane, Sumant G.

doi:10.1109/icaccct.2014.7019461

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…The reliability of stand-by systems with redundancy, featuring ideal switching without repair and constant and identical failure rates, can be described by the Poisson distribution (9) [50].…”

Section: Reliability Evaluationmentioning

confidence: 99%

PV Generator-Fed Water Pumping System Based on a SRM with a Multilevel Fault-Tolerant Converter

et al. 2022

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This paper presents a pumping system supplied by a PV generator that is based on a switched reluctance machine (SRM). Water pumping systems are fundamental in many applications. Most of them can be used only during the day; therefore, they are highly recommended for use with PV generators. For the interface between the PV panels and the motor, a new multilevel converter is proposed. This converter is designed in order to ensure fault-tolerant capability for open switch faults. The converter is based on two three-level inverters, with some extra switches. Moreover, to reduce the number of switches, the converter is designed to provide inverse currents in the motor windings. Due to the characteristics of this motor, the inverse currents do not change the torque direction. In this way, it was possible to obtain an SRM drive with fault-tolerant capability for transistor faults; it is also a low-cost solution, due to the reduced number of switches and drives. These characteristics of fault-tolerant capability and low cost are important in applications such as water pumping systems supplied by PV generators. The proposed system was verified by several tests that were carried out by a simulation program. The experimental results, obtained from a laboratory prototype, are also presented, with the purpose of validating the simulation tests.

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Section: Reliability Evaluationmentioning

confidence: 99%

PV Generator-Fed Water Pumping System Based on a SRM with a Multilevel Fault-Tolerant Converter

et al. 2022

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A reliable and efficient single‐phase modular multilevel inverter topology

Maddugari

Borghate

Sabyasachi

2019

Circuit Theory & Apps

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Bilevel inverters are replaced by multilevel inverters due to their capability of producing quality output voltage with low total harmonic distortion (THD). On the contrary, increase in number of semiconductor switches has questioned the reliability of the multilevel inverter topologies. To enhance the reliability, this paper proposes a single-phase five-level inverter topology with inherent fault-tolerant feature. The proposed inverter can sustain faults in sources and semiconductor switches by amending the switching combinations. No healthy switch is needed to be bypassed during the fault to ensure the optimum utilization of the switches. An analysis on the basis of reliability, cost, and efficiency is carried out of the proposed inverter and compared with the existing topologies. To prove the claim, the experimental results of the developed hardware model is analyzed and compared with the simulation results of MATLAB/SIMULINK.

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Development of an enhanced multilevel converter using an efficient fundamental switching technique

Kar

Priyadarshi

Karanki

2020

International Journal of Electrical Power & Energy Systems

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Reliability of different levels of cascaded H-Bridge inverter: An investigation and comparison

Cited by 4 publications

References 9 publications

PV Generator-Fed Water Pumping System Based on a SRM with a Multilevel Fault-Tolerant Converter

PV Generator-Fed Water Pumping System Based on a SRM with a Multilevel Fault-Tolerant Converter

A reliable and efficient single‐phase modular multilevel inverter topology

Development of an enhanced multilevel converter using an efficient fundamental switching technique

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