High-power high-frequency high-voltage rectifier transformer

Abstract

The invention relates to a high-power, high-frequency and high-voltage rectifier transformer, which comprises a core, a plurality of low-voltage windings, a plurality of high-voltage windings, a plurality of rectifier bridges and a transformer oil tank. The core adopts a rectangular ultra-crystalline transformer core, the low-voltage windings are divided into two groups by wide copper foil and are wound on two low-voltage skeletons on the long side column of the core along the same direction, half of the high-voltage windings are sequentially wound on one high-voltage coil skeleton, the otherhalf of the high-voltage windings are sequentially wound on another one high-voltage coil skeleton, the two high-voltage coil skeletons are respectively sleeved on the two low-voltage windings, and the high-voltage windings are respectively connected with the input ends of the matching rectifier bridges. The problem of damage to a high-frequency power supply switch, caused by reflection of distributed capacitance of the secondary winding of the transformer, can be solved, the working frequency can reach 10-50kHz, the rated voltage of direct-current output is 72kv, and the rated output power is no lower than 100kW. The temperature rise in full-load continuous operation is less than 40 DEG C. Therefore, the high-power, high-frequency and high-voltage rectifier transformer is an ideal booster device for a high-voltage power supply of a large electrostatic precipitator.

Description

technical field [0001] The invention relates to a special transformer, in particular to a voltage booster with a frequency of 10-50kHz, an input alternating voltage of 530v, a power greater than 100kW and an output DC voltage of up to 72kv. It is the key component of the energy-saving and high-efficiency new product "high-frequency power supply". It is matched with the electrostatic precipitator body to complete the dust removal of boiler flue gas, and belongs to the field of transformers. Background technique [0002] Global warming, the whole world is carrying out the treatment of environmental pollution caused by coal as fuel. The biggest pollution produced after coal combustion is dust, and the commonly used equipment to effectively control dust pollution is the electrostatic precipitator. With the development of the country, the standard for dust emission concentration is getting higher and higher. The current national standard for atmospheric smoke emission is 50mg / m...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of low output power and large voltage ripple of the existing dust-removing transformer mentioned above, and to provide an ultramicrocrystalline transformer core with a working frequency up to 10-50kHz, small voltage ripple, and output DC voltage up to 72kv, output power not less than 100kW, high-power high-frequency high-voltage rectifier transformer suitable for large-scale electrostatic precipitator requirements

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