Skip to main content
Article thumbnail
Location of Repository

A series-parallel load-resonant converter for a controlled-current arc-welding power supply

By Helen Geraldine Phyllis Pollock


A power supply incorporating a series-parallel load-resonant converter, capable of very\ud efficient operation over a wide range of output power is presented. The series-parallel\ud load-resonant converter is shown to have three pairs of resonant frequencies.\ud Operation of the circuit at each of these resonant frequencies maintains zero current\ud switching and high frequency operation. Design mathematics is developed which\ud allow series-parallel load-resonant converters to be designed with specific resonant\ud frequencies and circuit resistances. A new method of power control for series-parallel\ud load-resonant converters is presented; the power delivered to the circuit and hence the\ud load is shown to var substantially depending on which resonant frequency the circuit\ud is excited at. Two series-parallel load-resonant converters are designed simulated,\ud constructed and tested. There is good agreement between the simulation and\ud experimental results. One of the circuits produces an output current of 200 A while\ud the second demonstrates the new power control technique pulsing between 55 A and\ud 145 A while running at frequencies of 63 kHz and 100 kHz. The new power supply\ud is particularly suited to arc-welding. It contains an active rectifier and draws near\ud unity power factor

Topics: TK
OAI identifier:

Suggested articles


  1. (1992). (26) Correspondence with Tokin Corporation,
  2. (1988). 130 kHz 7.5 kW current source inverters using static induction transistors for induction heating applications", doi
  3. (1988). A Comparison of Half-Bridge Resonant Converter Topologies", doi
  4. (1991). A constant frequency resonant d. c. -d. c. converter with zero switching losses", doi
  5. (1989). A Generalized Approach for the Steady-State Analysis of Resonant Inverters", doi
  6. (1989). A history of pulsed MIG welding",
  7. (1985). A study of the MOSFET arc welding inverter (Untersuchung des MOSFET ... )",
  8. (1989). An investigation on classification methods of arc welding power sources",
  9. (1993). Analysis and Desi gn of a Series-Parallel Resonant Converter",
  10. (1990). Analysis and Design of a Half-Bridge Resonant Converter operating in Discontinuous conduction mode", doi
  11. (1988). Analysis on electrical properties of MOSFET inverter for arc welding",
  12. (1990). Analysis, optimisation and design of a series-parallel resonant converter", doi
  13. (1975). Arc energy relations in Pulse Current Welding Processes", Advanced Welding Techniques,
  14. (1989). Arc welding power source designs to meet the needs of industry",
  15. (1994). cc DD ; Input combinations
  16. (1988). Comparison of Resonant Topologies in High voltage DC Applications", doi
  17. (1989). Current pulse control of high frequency series resonant d. c. link power converter", doi
  18. (1994). Design, simulation and testing of a series resonant converter for pulsed load applications", doi
  19. Development of lowfrequency pulsed MIG welding for aluminium. alloys", doi
  20. (1991). Developments in power supplies for MIG welding",
  21. (1993). Electronic welder with high-frequency resonant inverter", doi
  22. (1992). Fixed frequency pwrn series-parallel resonant converter", doi
  23. (1992). Here's what's new in welding power sources",
  24. (1978). High-Frequency High Power Static Induction Transistor", doi
  25. (1984). High-Frequency Resonant Transistor DC-DC Converters", doi
  26. Improved operating area of the Zero-voltage-switching Series-resonant converter using Non-linear Capacitive Snubbers",
  27. Inverter-controlled arc welding equipment", doi
  28. (1986). Low distortion, high efficiency, static induction transistor (SIT) type sinusoidal pwm inverter for uninterruptible power supplies (UPS)",
  29. (1990). Methods of comparative evaluation of the technological properties of welding equipment and materials",
  30. (1992). Modem welding power supplies",
  31. (1989). Modem Welding Technology",
  32. (1992). Operating modes and simulation of the seriesparallel resonant converter", doi
  33. (1993). Phase-controlIed Series-Parallel Resonant Converter".
  34. (1989). Power Electronics: Converters, Applications and Design",
  35. Quasi-resonant Converters - Topologies and Characteristics", doi
  36. (1992). Recent Advances in Power Electronics", doi
  37. Reducing spatter in C02, gas-shielded welding - waveform control", doi
  38. (1994). Resonant converter topologies with three and four energy storage elements", doi
  39. (1993). Review of resonant link topologies for inverters", doi
  40. (1995). Soft-switching Techniques in PWM Converters", doi
  41. (1985). Solid state power control'for pulsed MIG welding systems", Advanced welding systems,
  42. (1990). Standards Institution, "Arc welding power sources, equipment and accessories", doi
  43. (1988). Standards Institution, "Disturbances in supply systems caused by household appliances and similar electrical equipment", doi
  44. (1989). Synergic control-another gimmick or practical solution? ",
  45. The development of welding current control systems for spatter reduction", doi
  46. (1992). The Static Induction Transistor", IEE Colloquium Active and Passive components for power electronics, paper no.
  47. (1990). Theoretical and Experimental Studies of the LCC-Type Parallel Resonant Converter", doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.