PL103148B1 - SWITCHING OF THE COILS OF THE WELDING CONVERTER - Google Patents

Description

The invention relates to a switching system windings of the welding converter by one or multiphase power circuit containing the copper including transformer and transducer. System this is used to change the current setting range welding.

The invention is based on a known solution according to Polish patent description No. 69 235 and is the development of this solution through the thigh improvement of the transformer and transducer assembly.

Patent No. 69,235 covers the series-wc- switching - parallel connection of transformer windings with built-in this transducer.

This transducer is specially adapted to change the operating status. Accordingly to the split transformer, it also includes two connectable members. By using the advantages it switches it is possible to significantly reduce the transductive mass ra while maintaining the parameters of its work (induction and magnetic field strength) convenient at large the wrong range of the mcc current, and therefore also high Wrong range of welding current.

In this solution, each member of the transducer is associated with one element of the transformer, because the power winding of the transducer is equal including the secondary winding of the transformer.

Changing the transducer connections is a matter of connection the power of the fastener. As a result (changes in the position of the contacts on this connector, the trans layout is changed ductor from serial to parallel. 2 Inconvenience of the solution according to the patent No. 69 235 is that the operating parameters of the transducer change in a strictly defined ratio when the connection of the coils is changed equally legli on the serial. These parameters are as a rule selected to provide the necessary properties static and dynamic transducer when selected sub-range of high currents.

The transducer designed in this way protects the switch habit also good dynamic properties with serial connection, i.e. when the end of small currents. It does have a sub-scope, however generally, the boundaries are unfavorably shifted towards low current market. The lowest possible came for they are not used, while for exploitation weather, it would be advantageous to raise upper limit of the sub-range.

The object of the present invention is to remove the pores higher inconvenience.

This goal was achieved in this way, and combined Phase branches have coils divided equally into two sections arranged in series so that the time when a section with a smaller number in one branch of the turn is situated on the upper side of the tencjalu, in the second branch there is such a section is on the lower potential side, with The transducer connection clamps are drawn out they are from the end clamp of one branch and from the clamp end of the second branch, and the switch contacts in one position they connect the places where the sections la- 103 1483 lurks in the branch, and in the second position they close their horses both branches.

The subject of the invention is shown in fig the ratio in which Fig. 1 is an illustration of the solution according to patent No. 69 235, at what omitted are items not relevant to the invention lazku. 2 shows an example of Chap the linkage according to the invention, for the transducer no dependent.

On the columns 1 and 2 of the transformer in Fig. r-1 is the primary winding of the transformer matora (not shown) and the winding secondary. The 3 and the 4 member of the transducer creates in npladzje_wynalazku one structural whole- losp. Each part of the transducer is associated with one part of the transformer, because the winding The end of the transducer is also a winding • secondary transformer. Change of transmission connections ductor. pcmoc ^ of connector is taking place 5. When the contacts are in the position shown in the figure, the transducer works as a series you. When the contacts are in the opposite position position, the transducer works in parallel.

In Fig. 2, one branch of the trans power winding the ductor is made up of sections 6 and 7 and the other z1 sections 8 and 9. Section 6 has the same number of turns as section 8 and section 7 the same number of turns as section 9.

When the contacts of the switch 5 find; in position na¬ drawn, sections 7 and 9 form the trans winding serial ductor. When these contacts are on in the opposite position, the branch formed from section 6 and 7 connects in parallel with the branch formed from sec 9 and 8, forming the winding of the transducer equilibrium legli. The transformer connections are not essential for the invention. Its secondary winding with od the receiver (and, if necessary, with one- or multi-phase rectifier set) closes circuit.

As can be seen, the solution according to the invention, combined just like according to patent No. 69,235, it may be used not only for the transducer and the winding common to the transformer winding, but also to an independent, connected transducer in series with the source transformer real for the secondary circuit. Objective the invention was realized by introducing switches not not all but only parts of the winding. At break connecting in series, the number of active turns is less than the sum of the turns in both branches equal noleglych. Each branch of the winding is then folded from two serial sections. When the transducer po¬ it is connected in parallel, there are two sections each different branches, while when the transducer is connected is ^ in series, one section is working.

The main difficulty in the implementation presented concept is the complexity of the system 148 waking. This trustworthiness was overcome by compilation sections yes, and with while in one section section with fewer turns is situated on the side not higher potential, in the other branch such the section is situated on the lower potential side cjalu. Connected to the external power track The ends of the working sections are left free head, while the switch contacts in one position they close the place where the sections join in a branch, and in the second position they close the ends of both branches.

Thanks to this solution, the system should be used You can use a lathe identical to that of a regular switch connecting in series-parallel, obtaining one the favorable boundaries of the small labor sub-scope deeds. With fewer turns active are in series connection, because smaller is the voltage absorbed by the -transducer, therefore more current can be achieved.

The essence of the invention is not changed by modification of the solution to place the branches on the columns, nor to modify them switch contact system cation. These contacts are basically run simultaneously. May be However, it is independent and may also be connected otherwise. The transducer components can be a con structurally related as shown or separated ne.

The solution according to the invention can be replaced are used not only for the transducer with winding common with the transformer winding, but also independent transducer connected in series with the source transformer real for the "secondary side" circuit. k 55 hive the ends of both branches 103 148 halyard -i h Ag2 --, ABOUT:,-'

Claims (1)

1. Patent claim A system for switching the windings of a welding converter with a single or multiphase power path, including, inter alia, a transformer and a two-module transducer with power windings switched in series at low welding rates, and in parallel at high workloads A welding roof, characterized in that the phases connected to each other have coils equally divided into two sections arranged in series, so that while in one branch the section with the smaller number of turns is situated on the higher potential side, in the other such a section is located on the lower potential side, where the transducer connection clamps are led from the end clamp of one branch and from the end clamp of the other branch, and the contacts of the switch in one position close the places where the sections connect in the branch, and in the second position it is called *