Single-phase seven-level PWM inverter for PV systems employing multi-level boost converter

Feloups, Cathrine E. S.; Ali, Ahmed; Mohamed, Essam E. M.

doi:10.1109/itce.2018.8316658

Cited by 11 publications

(3 citation statements)

References 22 publications

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“…Therefore, low switching frequencies are used to keep switching losses below reasonable levels, which makes it difficult to expect a quick response to external disturbances including load and source variations. Meanwhile, recent advances in power electronics technology have enabled the use of relatively low breakdown voltage devices using multi-level converter topologies [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

± 180° Discontinuous PWM for Single-Phase PWM Converter of High-Speed Railway Propulsion System

2020

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As high-capacity alternating current/direct current (ac/dc) power conversion systems, single-phase pulse-width modulation (PWM) converters used in high-speed railway propulsion systems adopt high-voltage Insulated-Gate Bipolar Transistors (IGBTs) as switching elements. Due to their high breakdown voltage characteristics, the switching dynamics are inferior to those of low-voltage IGBTs and switching losses are more dominant than conduction losses despite operating at relatively low switching frequencies of hundreds to several kHz. To solve this problem, this paper proposes ± 180° discontinuous PWM (DPWM) suitable for a single-phase circuit. With the simple addition of offset voltages, the proposed DPWM method can be implemented easily and switching losses can be reduced by half by clamping the switching legs of the H-bridge converter to the positive or negative dc rail during every half cycle. In addition, temperature deviation between the power stacks can be minimized by using selective application of clamping modes. The validity and effectiveness of the proposed DPWM are verified through simulations and experiments of a prototype converter.

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Section: Introductionmentioning

confidence: 99%

± 180° Discontinuous PWM for Single-Phase PWM Converter of High-Speed Railway Propulsion System

2020

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“…This development has made it possible to create pulse width modulation (PWM) inverters that can control voltage and frequency. As a result, the use of power electronics has increased significantly in more industrial applications such as renewable energy systems [2], [3], uninterruptable power supplies (UPS) [4], flexible AC transmission systems (FACTS) [5], motor drives [6], etc., to improve the performance of these applications.…”

Section: Introduction mentioning

confidence: 99%

Comparative Analysis between Two Different Control PWM Techniques Based on a Reduced-Component Multilevel Inverter

Feloups

Mohamed

2020

SVU-International Journal of Engineering Sciences and Applicati

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“…In order to overcome the aforementioned issues, a new multilevel inverter has been presented in this paper. The proposed topology has an optimum number of power components and hence fewer gate drive circuits in addition to less circuit layout complexity for a high number of levels compared with other topologies mentioned in [22] Figure 1 shows a modified structure for the proposed single-phase MLI which reduces the overall circuit by one power switch compared with the proposed circuits in [26] [27]. The proposed MLI comprises of "n" segments each segment is composed of a DC voltage source in series with one power switch without fast recovery diode.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a New Multilevel Inverter Employing Reduced Components

Feloups¹,

Mohamed²

2019

OALib

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This paper focuses on an implementation of new topology which can synthesize multi-level output voltage at the load terminals. The proposed inverter consists of two main parts; level generation part and polarity generation part. Level generation part is responsible for generating voltage levels at its end while; polarity generation part is a traditional H-bridge which is used to provide inversion of the output voltage levels. Single-phase seven-level inverter has been presented from the proposed multilevel inverter. This topology offers reduced number of switching components compared with many recent available topologies particularly for high number of levels. Due to the multi-level output voltage, low total harmonic distortion (THD), less circuit complexity, less cost and high efficiency can be obtained. A conventional PI controller is used for load voltage regulation to obtain output voltage near to sinusoidal. Computer-aided using the dSPACE_CP1103 controller and experimental setup are carried out to provide the validity and effectiveness of the proposed inverter.

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Single-phase seven-level PWM inverter for PV systems employing multi-level boost converter

Cited by 11 publications

References 22 publications

± 180° Discontinuous PWM for Single-Phase PWM Converter of High-Speed Railway Propulsion System

± 180° Discontinuous PWM for Single-Phase PWM Converter of High-Speed Railway Propulsion System

Comparative Analysis between Two Different Control PWM Techniques Based on a Reduced-Component Multilevel Inverter

Design and Implementation of a New Multilevel Inverter Employing Reduced Components

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