Performance Investigation of Three-Phase Three-Switch Direct PWM AC/AC Voltage Converters

Deraz, Said A.; Azazi, Haitham Z.; Zaky, Mohamed S.; Metwaly, Mohamed K.; Dessouki, M. El-Shahat

doi:10.1109/access.2019.2892523

Cited by 4 publications

(2 citation statements)

References 32 publications

(28 reference statements)

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“…In these cases, the output voltage is proportional to the input voltage, according to its voltage gain characteristic. Since the switches are commutated simultaneously, reduced switch configurations can be utilized [90,91]. On the other hand, a certain degree of phase control can be provided if harmonic injection methods are utilized, such as Dual Virtual Quadrature Sources (DVQS), which increases the power converter regulation capabilities [92].…”

Section: Power Converter Ideal Voltage Gainmentioning

confidence: 99%

Configurations, Power Topologies and Applications of Hybrid Distribution Transformers

et al. 2021

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Distribution systems are under constant stress due to their highly variable operating conditions, which jeopardize distribution transformers and lines, degrading the end-user service. Due to transformer regulation, variable loads can generate voltage profiles out of the acceptable bands recommended by grid codes, affecting the quality of service. At the same time, nonlinear loads, such as diode bridge rectifiers without power factor correction systems, generate nonlinear currents that affect the distribution transformer operation, reducing its lifetime. Variable loads can be commonly found at domiciliary levels due to the random operation of home appliances, but recently also due to electric vehicle charging stations, where the distribution transformer can cyclically vary between no-load, rated and overrated load. Thus, the distribution transformer can not safely operate under highly-dynamic and stressful conditions, requiring the support of alternative systems. Among the existing solutions, hybrid transformers, which are composed of a conventional transformer and a power converter, are an interesting alternative to cope with several power quality problems. This article is a review of the available literature about hybrid distribution transformers.

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Section: Power Converter Ideal Voltage Gainmentioning

confidence: 99%

Configurations, Power Topologies and Applications of Hybrid Distribution Transformers

et al. 2021

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“…An extinction angle control technique for PF improvement of a single-phase AC voltage controller fed an IM is presented in [19]. Different topologies of three phase PWM AC chopper in different applications are presented in [20]- [23]. A three phase PWM AC chopper, has eight IGBTs, feeds an IM is presented in [24].…”

Section: Introductionmentioning

confidence: 99%

Power Factor Correction of Three-Phase PWM AC Chopper Fed Induction Motor Drive System Using HBCC Technique

et al. 2019

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In this paper, a new control strategy for an induction motor (IM) drive system fed from three-phase pulse width modulation (PWM) ac chopper is proposed. The main objective of the proposed control scheme is to achieve input power factor correction (PFC) of the IM drive system under different operating conditions. PFC is achieved by continuously forcing the actual three-phase supply currents with the corresponding reference currents, which are generated in phase with the supply voltages, using hysteresis band current control (HBCC) technique. The proposed control strategy has two loops: the inner loop and outer loop. The output of the outer loop is the magnitude of the supply reference current resulting from either speed controller or startup controller, whereas the output of the inner loop is PWM signals of the ac chopper. The proposed ac chopper features a smaller number of active semiconductor switches, four IGBTs, with only two PWM gate signals. As a result, the proposed system is simple, reliable, highly efficient, and cost effective. Mathematical analysis of the drive system is presented. Components of the input LC filter are designed using frequency response. The IM drive system is modeled using MATLAB/SIMULINK, and a laboratory prototype was built and tested. The simulation and experimental results confirm the validity and robustness of the proposed control strategy. INDEX TERMS Hysteresis band current control, induction motor drive, power factor correction, pulse width modulation, three-phase AC chopper.

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Single-Stage Isolated AC-AC Converter Without Commutation Problem

Kim

Kwon

2022

IEEE Trans. Ind. Electron.

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Performance Investigation of Three-Phase Three-Switch Direct PWM AC/AC Voltage Converters

Cited by 4 publications

References 32 publications

Configurations, Power Topologies and Applications of Hybrid Distribution Transformers

Configurations, Power Topologies and Applications of Hybrid Distribution Transformers

Power Factor Correction of Three-Phase PWM AC Chopper Fed Induction Motor Drive System Using HBCC Technique

Single-Stage Isolated AC-AC Converter Without Commutation Problem

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