Inverter welding machine of choice points

From inverter welding machine manufacturer we learn that how to choose inverter welding machine. We know that inverter welding machine is small in size and light in weight, saving material and easy to carry. Its most important characteristic is high working frequency. As the inverter frequency of inverter welding and cutting equipment is much higher than that of power frequency (300 to 2000 times as high as power frequency), therefore, the volume and the weight of the transformer will be greatly reduced. Similarly, the working frequency is improved greatly, the weight and the volume of electric reactor will be greatly reduced. The significant weight reduction and volume reduction of the transformer and the electric reactor decrease greatly the weight and the volume of the inverter welding and cutting equipment itself. And the weight is only 1/10 to 1/5 of the traditional welder, beneficial to convenient production, transportation and utilization, so as to save the consumption of a lot of metal materials in welding and cutting equipment manufacturing (mainly copper, silicon steel sheet, aluminum etc.).

At present many people working as inverter welding machine manufacturer will put the energy-saving, high efficiency in the first place. They greatly reduce the weight and the volume of the transformer and the reactor of inverter welding and cutting equipment , and the corresponding power loss was significantly reduced (mainly the energy loss of the core magnetic and wire), and the effective power output can reach 82% ~ 93%. However, the effective power output of the traditional welding and cutting equipment is only 40% ~ 60%, serious waste of power resources. Secondly,it has good dynamic characteristic, flexible control and stable output voltage and current.

The inversion and rectification are two opposite concepts. Rectification is to transform alternating current (AC) into direct current (DC), while inversion is to transform DC to AC. Arc welding power source using invert technology is called inverter welding machine. The inverter process requires a high-power electronic switching devices. Inverter welding machine adopting the insulated gate bipolar transistor (IGBT) as the inverter switching device is called IGBT inverter welding machine. Inverter welding and cutting equipment is consisted by the inverter power supply and external equipment. Inverter power supply is the main equipment of inverter welding and cutting equipment, its working process is as follows: industry frequency AC - DC - high frequency AC - voltage transformation - DC.

At present, the inverter welding machine adding power factor compensation controller is sure to increase the amount of electronic components. A general solution is to add the power factor correction (PFC) between the power frequency power supply rectifying and filtering device, to control the PWM. The circuit of PFC could be even more complicated than PWM under control, therefore, under the same condition, to the inverter welding machine adding power factor compensation controller, the cost is higher than the inverter welding machine not installed power factor compensation controller. But if the power factor is improved, the input on the power supply facilities can be reduced, and the loss of current line can also be reduced. From the enterprise long-term consideration, this is certainly worthwhile. According to expert estimates, for inverter welding machine manufacturer who needs the frequent use of the inverter welding machine adding power factor compensation controller, the cost of a year electricity utilization can be reduced to 1000-5000 yuan. For some units, rarely using inverter welding machine, such as to repair something with it ten times or eight times a year, taking two inverter welding machines back and letting them lying in the workshop corner, may already moldy scrapped not worn out , it is not necessary to consider about the power factor.