Bhuvaneswari, G. ; Narula, Swati ; Singh, Bhim (2012) Three-phase push-pull modular converter based welding power supply with improved power quality In: IEEE 5th India International Conference on Power Electronics (IICPE), 2012, 6-8 Dec. 2012, Delhi, India.
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Official URL: http://ieeexplore.ieee.org/document/6450486/
Related URL: http://dx.doi.org/10.1109/IICPE.2012.6450486
Abstract
This paper deals with an efficient method of improving power quality for arc welding power supply. The analysis and design of modular three-phase ac-dc converter using three single-phase high frequency transformer based push-pull converter are carried out for welding power supply. A three-phase modular power-factor-correction (PFC) converter connected to a pulse width modulated (PWM) dc-dc converter ensures nearly unity power-factor of arc welding power supply and also suppresses input current harmonics. It includes the operation of a modular converter in discontinuous-conduction-mode (DCM) of operation with inherent power factor correction (DCM-PFC). This PFC converter exhibits ease of control, high frequency isolation as well as single stage power conversion. The fast dynamic response of this converter has a constant voltage mode in the range of welding currents and inherent parametrical short-circuit limit. This leads to improved arc stability and weld bead quality.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Source: | Copyright of this article belongs to Institute of Electrical and Electronics Engineers. |
| Keywords: | Welding Power Supply; DCM; High Frequency Transformer; Power Factor Correction; Power Quality; Push-Pull Converter; Total Harmonic Distortion |
| ID Code: | 110728 |
| Deposited On: | 04 Aug 2017 13:13 |
| Last Modified: | 04 Aug 2017 13:13 |
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