All welding machines require a transformer to convert the input current to a suitable welding current, although with an inverter welder, this can be done more efficiently, at higher frequencies; As a result, the investor can use a much smaller transformer, achieving a substantial reduction in size and weight. The consumption of energy also decreases as the transformer, more efficient, loses less power to heat, having a significant effect in reducing environmental pollution.
Steps To Note
Instead of using a transformer-rectifier, the conversion is carried out utilizing an electronic plate. This is possible, using magnetic devices much smaller than transformers and traditional technologies. The semiconductor main power switch (power switching, which provides tens of thousands of switches per second) is used to create the high-frequency AC power supply for the transformer.
Then, a modest and small transformer converts the high-frequency alternating voltage to that required for welding. The control system monitors the input, output, and operator settings to ensure stable welding characteristics.
The fact that the world is changing does not go unnoticed to anyone. However, it is very tempting to continue using the technologies that have been used throughout life, such as welding, and to avoid the fact that new technologies have been developed.
In any case, choosing this point of view is not the most important. The design and capacity of the welding energy sources are in continuous and rapid change. One of the technologies that drive this change is the development and popularization of power supplies based on inverter technology. This inverter welding machine (เครื่อง เชื่อม อิน เวอร์ เตอร์, which is the term in thai) works particularly well for welding aluminum alloys, especially the finer ones.
What Are The Novelties?
In the past, welding power supplies were based on transformers. The power supply included 60 Hz 230, 460 or 575 volts of power. A metal transformer changed its relatively high input voltage to a lower voltage of a current of 60 Hz. This low voltage current then rectified some rectifier bridge to receive direct current (DC) at the output of the welder. The control of the production was usually done by some slow magnetic amplifier.
In inverter-controlled power supplies, the same 60 Hz input power is used. However, instead of being supplied directly from a transformer, it is first switched to a 60 Hz CD. It is then sent to the inverter section of the inverter. The power supply, high voltage, high-frequency CD and then it is transported to the main power transformer, where it is transformed into low voltage DC of 20,000 Hz suitable for welding. Finally, it passes through a circuit that acts as a filter and rectifier. In the output, there are controls in solid state that modulate the rate of change of the switching transistor.