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Special rectifying power supply apparatus for high-power frequency converter

A technology of rectifying power supply devices and frequency converters, which is applied in the direction of irreversible AC power input conversion to DC power output, etc., which can solve problems such as the inability to achieve power saving effects and achieve high-quality power output effects

Inactive Publication Date: 2017-01-04
宁波永效环保科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In the actual application process, the existing frequency converter cannot achieve the power saving effect under specific working conditions, such as rated speed, rated power and rated frequency

Method used

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  • Special rectifying power supply apparatus for high-power frequency converter

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Embodiment

[0020] Please refer to figure 1 As shown, a special rectification power supply device for a high-power frequency converter, including a frequency converter terminal 2 and a rectifier module 4 connected to the frequency converter terminal 2, a capacitor 1 is connected in parallel to the frequency converter terminal 2, and the The motor 3 is connected to the terminal 2 of the frequency converter; the rectification module 4 is composed of one of the first rectification unit 5, the second rectification unit 6, the third rectification unit 7, the fourth rectification unit 8 and the fifth rectification unit 9 , and the first rectification unit 5 , the second rectification unit 6 , the third rectification unit 7 , the fourth rectification unit 8 and the fifth rectification unit 9 are all connected with connection terminals 10 .

[0021] The internal connection of the rectifier module is as follows:

[0022] The first rectifier unit 5 is composed of two thyristors and a wire, and the...

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Abstract

The invention discloses a special rectifying power supply apparatus for a high-power frequency converter. The special rectifying power supply apparatus comprises a frequency converter terminal and a rectifying module connected with the frequency converter terminal, wherein the frequency converter terminal is connected with a capacitor in parallel; the frequency converter terminal is connected with an electric motor; and the rectifying module comprises one kind of a first rectifying unit, a second rectifying unit, a third rectifying unit, a fourth rectifying unit and a fifth rectifying unit. By adoption of the special rectifying power supply apparatus, the power supply requirements of different frequency converters can be satisfied; meanwhile, the rectifying power supply apparatus for the frequency converter, used as one kind of power supply conversion equipment, is positioned between a power supply and a load, so that better electric energy output can be provided, particularly power supply conversion of high-power electric energy can be realized; meanwhile, the current and voltage output are lowered through the rectifying way; and then power compensation is realized through the capacitor, thereby achieving an energy-saving and electricity-saving effect more effectively.

Description

technical field [0001] The invention relates to a rectifying power supply device, in particular to a special rectifying power supply device for a high-power frequency converter, and belongs to the technical field of power equipment application. Background technique [0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. The frequency converter adjusts the voltage and frequency of the output power supply by switching off the internal IGBT, and provides the required power supply voltage according to the actual needs of the machine, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions , such as overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, frequency converters have a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/17
CPCH02M7/17
Inventor 郭红伟刘开国
Owner 宁波永效环保科技有限公司
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