High Performance DC-to-AC Converter Using Snubberless H-Bridge Power Switches and an Improved DC-to-DC Converter

Eya, Candidus U.; Salau, Ayodeji Olalekan; Oti, Stephen Ejiofor

doi:10.46300/9106.2021.15.36

Cited by 11 publications

(2 citation statements)

References 16 publications

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“…A three-level diode clamped inverter topology has been reported in [17], [18]. The configuration of the cascaded H-bridge multilevel inverter [19]- [22] is a series connection of conventional single-phase inverters with separate dc sources. This system enables unequal values of different DC voltage sources.…”

Section: Introductionmentioning

confidence: 99%

Effect of supply voltage variations on single-phase capacitor clamped multilevel inverter fed induction motor drive

Diyoke,

Eya

2023

IJAPE

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This article presents the effect of supply voltage variations on single-phase capacitor-clamped multilevel inverter-fed induction motor drives. This research is tailored at determining the best torque value and speed to attain a stable state under input voltage variation and minimum time response to realize low percentage harmonic distortions. The effect of constant power quality disturbance harms the performance and behavior of asynchronous motors based on harmonic contents and other energy source integrations. The multilevel inverter has shown good performance in motor drives. This paper deals with the effect of input voltage variations on a single-phase multilevel capacitor-clamped inverter for asynchronous induction motor drives. A five-level capacitor-clamped inverter with an in-phase disposition pulse width modulation technique is adopted. Four high-frequency triangular carrier signals are generated and compared with a reference sinusoidal signal. As a result of this approach, the inverter switches firing signals are generated. The open-loop model is designed and simulated utilizing MATLAB/Simulink and results based on different values of supply voltage are presented. The current and voltage total harmonic distortions (THDs) obtained are 4.97% and 4.46% respectively at the best operating voltage of 400 V and at maximum torque of 47 Nm.

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Section: Introductionmentioning

confidence: 99%

Effect of supply voltage variations on single-phase capacitor clamped multilevel inverter fed induction motor drive

Diyoke,

Eya

2023

IJAPE

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“…For example, electric arc furnaces, adjustable speed drives (ASDs), etc. cause voltage fluctuations, power electronic converters generate current harmonics and distort voltage waveforms, and short circuits faults result in voltage sags and sudden loss of large loads lead to voltage swells [4,5]. In addition, most customer loads such as office equipment's, PLCs, microcontrollers, motor starters, power electronics converters, and other industrial non-linear and sensitive loads are sensitive and unprotected from power quality disturbances.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Reactive Power and Harmonics in a Case of Industrial Customer

Aeggegn

Salau

Gebru

et al. 2022

JERA

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In most industrial plants, power quality is a major issue which hinders productivity and efficiency of the plants due to the use of semiconductor based loads and non-linear loads. As a result, to address the power quality problems in these industries, specialized power devices such as the Unified Power Quality Conditioner (UPQC), can be installed at the customer's location to resolve practically all power quality issues. UPQC consist of a series of active power filters (APF) which mitigate voltage quality issues and shunt active power filters which are used to reduce current quality issues, like harmonics and reactive power burdens. This paper, therefore presents an investigation and assessment of the power quality problems associated with Bahir Dar Textile Share Company. This was achieved by examining the voltage and current harmonic levels of various types of loads using PI and fuzzy logic controllers by measuring the level of total harmonic distortion (THD) with and without the insertion of the UPQC. The novelty of this paper is the implementation of the controller based customized UPQC for power factor and reactive power compensation. It was observed that by designing the system without and with UPQC, the results of the FFT analysis show that the fuzzy logic controller (FLC) reduced the harmonics level of the load voltage and current by 1.10% and 2.14% respectively. Generally, harmonics was alleviated by 90%, reactive power was reduced by 20%, and power factor was improved by 33%. Hence, the proposed UPQC is capable of holding the voltage and current harmonics levels within the acceptable limit, which satisfies the standards imposed by IEEE 519-1995.

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Constant and wireless controlled DC-to-AC based boost differential converter with a sensor-less changeover system

Eya

Salau

Oti

2021

Int J Syst Assur Eng Manag

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High Performance DC-to-AC Converter Using Snubberless H-Bridge Power Switches and an Improved DC-to-DC Converter

Cited by 11 publications

References 16 publications

Effect of supply voltage variations on single-phase capacitor clamped multilevel inverter fed induction motor drive

Effect of supply voltage variations on single-phase capacitor clamped multilevel inverter fed induction motor drive

Mitigation of Reactive Power and Harmonics in a Case of Industrial Customer

Constant and wireless controlled DC-to-AC based boost differential converter with a sensor-less changeover system

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