Power quality improvements of arc welding power supplies by modified bridgeless SEPIC PFC converter

Bouafassa, Amar; Fernández‐Ramírez, Luis M.; Babes, Badreddine

doi:10.1007/s43236-020-00143-2

Cited by 12 publications

(5 citation statements)

References 13 publications

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“…Paper [23] proposes an original circuit solution for a welding inverter with a bridgeless power factor corrector based on SEPIC topology. The scheme is distinguished by a small number of active power components in the main power circuit but the modes of their operation are accompanied by the action of increased voltages, which leads to an increase in the requirements for the components and an increase in the cost of the welding source.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Design of an universal source for semi-automatic ac welding and induction heating

Burlaka

Lavrova

Podnebennaya

et al. 2021

EEJET

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This paper proposes a circuit solution and a power source control algorithm for semi-automatic AC welding with improved energy and weight-size characteristics. A distinctive feature of the designed source is the absence of an input rectifier: welding is carried out with a high-frequency alternating current. That has made it possible to significantly reduce power losses in the source, as well as provide the possibility of implementing induction heating by connecting an inductor to the source output. Another distinctive feature of the designed source is an increased power factor and a reduced level of higher harmonics of the current consumed. The power factor of the described source reaches 0.94 against 0.5÷0.7 for sources equipped with a conventional rectifier with capacitive smoothing. The designed source's composition includes a power supply system for the wire feed drive with speed stabilization due to positive feedback on the motor current. That has made it possible to ensure the stable operation of the drive in a wide range of speeds. A model has also been developed of a flux wire welding torch containing a feed drive and a coil with a wire (up to 100 mm in diameter), placed, in order to reduce the size, in the handle of the torch. In addition to the welding function, the source makes it possible to solve the tasks related to induction heating and/or hardening of small parts; to that end, a compact inductor is connected to its output. Tests of the source showed the feasibility of the proposed ideas and circuit solutions. The dimensions of the source are 190×107×65 mm; weight, 1.4 kg; output current, up to 120 A. The proposed technical solution enables the construction of small-sized, lightweight, universal, easy-to-use power supplies for semi-automatic welding with the option of induction heating

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Design of an universal source for semi-automatic ac welding and induction heating

Burlaka

Lavrova

Podnebennaya

et al. 2021

EEJET

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“…By removing the input DBR and minimizing the amount of semiconductor devices that the current must pass through, the switch conduction loss is lowered. Several isolated bridgeless converters based on Buck boost designs including SEPIC [19] [5] [20] Cuk [21] [22] zeta [23] and Luo [24] converters, have been proposed to address the aforementioned problems. For battery charging applications, the bridgeless SEPIC Luo converter has been particularly prominent, as mentioned in the work.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of bridgeless isolated SEPIC-Luo converter for EV battery charging using PI and ANN controller

Dhandapani,

Ravichandran,

Shanmugam

et al. 2024

IJPEDS

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Electric vehicle (EV) rechargeable battery packs that employ traditional power factor correction (PFC) circuit design have performance limitations due to their substantial conductivity loss that ensures at the input of a diode bridge rectifier (DBR). This study suggests a bridgeless (BL) isolated single ended primary inductance converter (SEPIC) - Luo converter to address the problem. As a result, the input current exhibits a power factor operation of unity throughout the charging process. DBR elimination and current conduction through a remarkably small number of circuits both significantly reduce conduction losses. The use of an artificial neural network (ANN) and proportional integral (PI) controller enhances the converter's performance with a stable DC link voltage. The suggested converter overall operation is thoroughly described in terms of variety of operating modes and simulation-based effectiveness. Here, with the assistance of the hysteresis current controller (HCC), the input current disruptions are reduced. Constant current and voltage management is used to successfully charge the EV battery, resulting in improved efficacy and inherent PFC. By utilizing simulation outcomes achieved from MATLAB, the performance of proposed BL isolated SEPIC-Luo in boosting the power quality of EV charger system is examined.

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“…This control technique is based on a very simple concept. It achieves unity power factor by controlling the inductor current to be in phase with the input rectified voltage 34 . It has been the standard strategy for single-phase PFC rectifier in the industry because it has the advantage of lower THD, has improving noise and easily forming source current waveforms.…”

Section: Introductionmentioning

confidence: 99%

A dSPACE-based implementation of ANFIS and predictive current control for a single phase boost power factor corrector

Babes,

Latrèche,

Bouafassa

et al. 2024

Sci Rep

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This paper presents an innovative control scheme designed to significantly enhance the power factor of AC/DC boost rectifiers by integrating an adaptive neuro-fuzzy inference system (ANFIS) with predictive current control. The innovative control strategy addresses key challenges in power quality and energy efficiency, demonstrating exceptional performance under diverse operating conditions. Through rigorous simulation, the proposed system achieves precise input current shaping, resulting in a remarkably low total harmonic distortion (THD) of 3.5%, which is well below the IEEE-519 standard threshold of 5%. Moreover, the power factor reaches an outstanding 0.990, indicating highly efficient energy utilization and near-unity power factor operation. To validate the theoretical findings, a 500 W laboratory prototype was implemented using the dSPACE ds1104 digital controller. Steady-state analysis reveals sinusoidal input currents with minimal THD and a power factor approaching unity, thereby enhancing grid stability and energy efficiency. Transient response tests further demonstrate the system’s robustness against load and voltage fluctuations, maintaining output voltage stability within an 18 V overshoot and a 20 V undershoot during load changes, and achieving rapid response times as low as 0.2 s. Comparative evaluations against conventional methods underscore the superiority of the proposed control strategy in terms of both performance and implementation simplicity. By harnessing the strengths of ANFIS-based voltage regulation and predictive current control, this scheme offers a robust solution to power quality issues in AC/DC boost rectifiers, promising substantial energy savings and improved grid stability. The results affirm the potential of the proposed system to set new benchmarks in power factor correction technology.

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Power quality improvements of arc welding power supplies by modified bridgeless SEPIC PFC converter

Cited by 12 publications

References 13 publications

Design of an universal source for semi-automatic ac welding and induction heating

Design of an universal source for semi-automatic ac welding and induction heating

Performance evaluation of bridgeless isolated SEPIC-Luo converter for EV battery charging using PI and ANN controller

A dSPACE-based implementation of ANFIS and predictive current control for a single phase boost power factor corrector

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