Since there is no requirement on the energy efficiency of the welding machine, most products are not designed for energy efficiency. Generally, safety and weldability are the main factors.Energy efficiency design includes many aspects such as installation structure, circuit structure, selection of power components, manufacturing process, etc.Some design changes to existing products or improvements in manufacturing processes will improve some of the performance indicators, and not necessarily increase costs, and may sometimes reduce costs.
Installation: rectifier bridge or the position of the reactor with a cable connected to the output directly or on the length of the conductive row, about the length of the cable or conductive row, the longer the length of the cable or conductive row, the greater the power of its consumption in the internal.
Circuit structure: the choice of hard switch and soft switch, the topology of PFC circuit, the cooling fan is hot start or constant turn.
Selection of power components: pressure drop of IGBT, VMOS, thyristor and rectifier tube;Internal resistance of the reactor;Power loss of current sampling sensor.
Manufacturing process: the length of the wire head of transformer and reactor;The number and wastage of the head of the internal main loop (especially the secondary) bolts;The core assembly of non-inverter welder (especially iron core soldering) brings the Udall eddy current loss.