Novel dual power on-load voltage regulation rectifier transformer

Abstract

A novel dual power on-load voltage regulation rectifier transformer comprises a voltage regulating transformer and a rectifier transformer, wherein the voltage regulating transformer comprises a voltage regulation transformer high voltage coil, a voltage regulation transformer voltage regulation coil and an on-load switch, and the rectifier transformer comprises a first rectifier high voltage coil, a second rectifier high voltage coil, a rectifier low voltage coil and a no-load switch, the first rectifier high voltage coil and the second rectifier high voltage coil achieve the combination of serial connection or parallel connection by means of the switching of the no-load switch, the voltage regulation transformer high voltage coil achieves the combination of positive and negative multi-pole voltage regulation by means of the selection of the positive and negative pole terminals and an output terminal of the on-load switch, different high voltage values are output to the rectifier transformer and transformed by the rectifier transformer, then different low voltage values are output, and the voltage regulation transformer and the rectifier transformer are conjugate iron cores. The voltage regulation rectifier transformer is wide in voltage regulation range, the low voltage output voltage is output in rank difference, the range of the low voltage output voltage is the same as that of voltage regulation, the voltage regulation rectifier transformer can work under different voltage levels of 20 kv and 10 kv, the usage ratio of equipment is high, the loss is low, the occupation space of the voltage regulation rectifier transformer is small, the production efficiency can be increased, and the production and operation costs can be reduced.

Description

Technical field [0001] The invention relates to the field of special transformers, in particular to a novel dual-power on-load voltage regulating rectifier transformer. Background technique [0002] Dual power supply on-load voltage regulating rectifier transformer (high voltage input 20KV or 10KV) currently usually uses the following methods: [0003] 1. The voltage-regulating rectifier transformer does not have voltage-regulating, and adopts a single body structure (that is, single-core structure), and the voltage-regulating rectifier transformer adopts variable magnetic flux voltage regulation; [0004] 2. It adopts single body structure (ie single core structure) and two transformers, one 20KV transformer and one 10KV transformer. When the grid side voltage is 20KV, use a 20KV voltage transformer, when the grid side voltage is 10KV When using a 10KV voltage transformer. [0005] The common problems of the above two methods are: [0006] 1. Narrow voltage regulation range (that...

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Problems solved by technology

[0008] 3. Non-level difference voltage regulation (that is, the value of the output voltage of each gear of low voltage is not differential output)

[0010] 1. It is easily affected by voltage fluctuations on the high-voltage network side, and the low-voltage output is unstable, which is not conducive to rectifying AC into DC power supply. After rectifying into DC, the DC voltage fluctuates greatly, which is not conducive to the operation of the load;

[0011] 2. The transformer with variable flux voltage regulation is affected by the voltage fluctuation of the grid side, and it is easy to over-excite operation, and the core temperature rise of the transformer and the noise of the transformer are large;

[0012] 3. Compared with the transformer with level difference voltage regulation, the application range of the transformer with non-equal difference voltage regulation is smaller

[0014] 1. Compared with the transformer with level difference voltage regulation, the application range of the transformer with non-equal range voltage regulation is small, which cannot meet the needs of the electrolysis process;

[0015] 2. The cost of using two transformers is too high and the floor area is large

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