Abstract
In AC tungsten inert gas (TIG) welding machine application,
there are two kinds of commonly used topologies of the second
stage half bridge inverter circuit. This paper analyses and
compares these two topologies. In addition, in the second
topology, more investigations have been made to show the
factors that can affect the changing rate of the output current as
well as the factors that can affect the current transformation
ratio in the coupled inductor. High changing rate and high
current transformation ratio are the two important requirements
of the electrical power source for AC TIG welding, however,
in the conclusion of the analysis, it is difficult to meet these
requirement at the same time. Therefore, a solution by adding
extra voltage sources across the rectification circuit is proposed
to maintain the high changing rate of the output current as
7A/µs and achieve about 100% current transfer in the coupled
inductor.
there are two kinds of commonly used topologies of the second
stage half bridge inverter circuit. This paper analyses and
compares these two topologies. In addition, in the second
topology, more investigations have been made to show the
factors that can affect the changing rate of the output current as
well as the factors that can affect the current transformation
ratio in the coupled inductor. High changing rate and high
current transformation ratio are the two important requirements
of the electrical power source for AC TIG welding, however,
in the conclusion of the analysis, it is difficult to meet these
requirement at the same time. Therefore, a solution by adding
extra voltage sources across the rectification circuit is proposed
to maintain the high changing rate of the output current as
7A/µs and achieve about 100% current transfer in the coupled
inductor.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 9th International Conference on Power Electronics, Machines and Drives |
| Publisher | Institution of Engineering and Technology |
| Number of pages | 6 |
| Publication status | Accepted/In press - 17 Apr 2018 |
| Event | 9th International Conference on Power Electronics, Machines and Drives 2018 - Liverpool ACC, Liverpool, United Kingdom Duration: 17 Apr 2018 → 19 Apr 2018 https://events.theiet.org/pemd/ |
Conference
| Conference | 9th International Conference on Power Electronics, Machines and Drives 2018 |
|---|---|
| Abbreviated title | PEMD 2018 |
| Country/Territory | United Kingdom |
| City | Liverpool |
| Period | 17/04/18 → 19/04/18 |
| Internet address |
Keywords
- Inductor
- Inverter
- Welding