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Research on High-power-factor & Soft-switching Arc-welding Inverter

Author: YuXinYan
Tutor: KangYong；DuanShanXu
School: Huazhong University of Science and Technology
Course: Power Electronics and Power Drives
Keywords: Inverter welding power source Phase-shifted full-bridge converter Power Factor Correction Soft-switching Saturated inductance
CLC: TM464
Type: Master's thesis
Year: 2005
Downloads: 302
Quote: 3
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Abstract


This article first phase-shifted full-bridge ZVS PWM converter -depth study of this currently the most widely used in the inverter welding power source topology , a detailed analysis of its working principle and the soft-switching conditions , point out its advantages and disadvantages . Because traditional phase-shifted full-bridge ZVS soft switching PWM converter program , there are some inherent defect , and further developed on the basis of its shift phase full-bridge ZVZCS PWM converter -depth study . Lagging Arm followed by saturable inductor ZCS phase-shifted full-bridge converter topology ZVZCS PWM -based circuit combined ZVZCS achieve the conditions for the design of the main circuit design principles . In this special power for arc welding power control system design is based on in-depth analysis of its dynamic and static characteristics required . On the basis of the above - mentioned research has designed a 250A/10kW experimental inverter welding power source , and experimental results are given . Experimental results show that the experimental high power efficiency , good reliability , good static and dynamic characteristics , small size , light weight . Power factor correction technology is currently a hot topic in the field of power electronics , power factor correction is imperative , because the countries have developed harmonic pollution limits . In this paper, the three-phase power factor correction technology also conducted a more in-depth research . First analysis of several of the more common three-phase PFC topology , point out its advantages and disadvantages , and then proposed in this paper one can realize the complete decoupling module combined single-phase three-phase PFC program , to achieve a power factor correction system and harmonic suppression . The program can take full advantage of the mature single-phase PFC technology , simple structure , high reliability and good harmonic suppression effect is a useful program . The simulation results demonstrate the feasibility of the program .

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter > Inverter
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