Novel phase shifting rectifier transformer

Abstract

The invention discloses a novel phase shifting rectifier transformer, which comprises a voltage regulating transformer body, a rectifier transformer body and a phase shifting unit. The phase shifting unit is arranged on a voltage regulating transformer side, and comprises a phase shifting coil and a no-load switch. The no-load switch comprises an input stage and an output stage. A common joint of the output stage is a phase shifting leading-out end, and a common joint of the input stage is directly connected with the leading-out end of a basic winding of a voltage regulating transformer coil, or is connected with the leading-out end of the basic winding of the voltage regulating transformer coil through a no-load reversing switch. Dotted terminals and unlike terminals or the dotted terminals, the unlike terminals and tap joints of the phase shifting coil are respectively connected with gear joints of the input and output stages of the no-load switch, and phase shifting in different angles is realized through the transformation of different gears of the no-load switch or the no-load switch and the no-load reversing switch. The rectifier transformer is simple in structure, low in construction difficulty and convenient to operate, occupies a small space, and can be easily implemented even at a high voltage level. The performance of the product can be ensured, production efficiency can be improved, the manufacture, operation and maintenance cost of equipment is lowered, and the effects of energy saving and consumption reduction are achieved.

Description

technical field [0001] The invention relates to the field of special transformers, in particular to a novel phase-shifting rectifier transformer. Background technique [0002] In high-power rectification equipment, 12-pulse wave can no longer meet the requirements, and a rectifier unit with a larger pulse number must be used. In this case, two or more voltage regulating and rectifying transformers must be operated in parallel. Such voltage regulating and rectifying transformers must be equipped with special phase-shifting windings for phase shifting. The phase-shifting windings are usually set at the following positions: 1. On the primary side of the rectifier transformer (see attached Figure 9 ); 2. Simultaneously set on the side of the voltage regulating transformer and the primary side of the rectifier transformer (see attached Figure 10 ). [0003] There is following deficiency in above-mentioned two schemes: [0004] 1. The voltage regulating rectifier transformer...

AI Technical Summary

Problems solved by technology

[0004] 1. The voltage regulating rectifier transformer has been connected at the factory, that is, the phase shift angle (including positive and negative polarity) of each voltage regulating rectifier transformer is fixed, that is, each voltage regulating rectifier transformer corresponds to only one set of phase shift angles , there is no way to choose its phase shift angle according to the needs; if it is difficult to change on site, it is even impossible to realize;

[0005] 2. The terminals of the phase-shifting winding of the voltage regulating rectifier transformer are all connected to the junction box on the box wall. When the phase-shifting angle needs to be changed, the wiring should be changed (only refers to changing the positive and negative polarity of the phase-shifting angle). If the wiring is changed in the junction box, it will take up The space is large, the structure of the fuel tank and lead wires is complex, especially for high voltage levels, the implementation is difficult, and sometimes it is even impossible to implement

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