Modularized three-phase four-wire active power filter

A power filter, three-phase four-wire technology, used in active power filtering, harmonic reduction devices, and AC networks to reduce harmonics/ripples, etc., can solve the complex inspection and debugging of three-phase four-wire active filters. , problems such as difficulty in returning to the factory for maintenance, heavy weight, etc., to achieve the effects of convenient upgrade and expansion and fault maintenance, stable and reliable filtering performance indicators, and low manufacturing costs

Inactive Publication Date: 2010-10-20
天津华翔电气集团股份有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inspection and debugging of the three-phase four-wire active filter is more complicated, and it is difficult to carry out on site. Moreover, the current structure is generally installed as a whole machine, which is large in size and heavy in weight, and it is difficult to return to the factory for maintenance.

Method used

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  • Modularized three-phase four-wire active power filter
  • Modularized three-phase four-wire active power filter

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing and preferred embodiment, the specific implementation mode, structure, feature provided according to this utility model are described in detail as follows:

[0039] see figure 1 , a modular three-phase four-wire active power filter, characterized in that: the frame structure of the three-phase four-wire active power filter is built with profiles, and standard distribution cabinets can also be used; each module is different according to the function Each is installed in a box composed of profiles; each module is in accordance with figure 1 Structural form installation and wiring. The modules include: a circuit breaker module 1, a filter module 2, a converter module 3, a reactor module 4, and a harmonic analyzer module 5; the converter module samples the grid load current through a load current sensor, and Analyze and calculate the actual harmonic current on the power grid, and then output a compensation current that is equ...

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Abstract

The invention relates to a modularized three-phase four-wire active power filter. The active power filter adopts profiles to set up the frame structure of the complete machine or adopts standard distribution cabinet type. The active power filter is provided with the following five main functional modules based on functions: a circuit breaker module, a filter module, a converter module, a reactor module and a harmonic analyzer module. Different modules achieve the aims of electrical connection and data communication through corresponding hardware interfaces. The modules are respectively installed in boxes formed by the profiles according to function difference. The functions of the modules are relatively independent. Each module can be singly changed, thus being convenient for upgrading and capacity expansion of the functions and breakdown maintenance and improving the practicability and flexibility of the active power filter. The active power filter has strong anti-jamming capability and high filtering performance index, is stable and reliable and is convenient and simple in installation and wiring.

Description

technical field [0001] The invention relates to a power filter, in particular to a modular three-phase four-wire active power filter. Background technique [0002] At present, in the commonly used three-phase four-wire active power filter, the usual installation structure only places the internal components directly inside the box or cabinet, so that when the three-phase four-wire active power filter needs to be upgraded or extended During fault maintenance, it is necessary to detect and modify the entire box or cabinet, which is not conducive to upgrade expansion and fault repair, and the interference of the main circuit to the control circuit has not been effectively limited, which will affect the performance of the active power filter Indicators and working stability, once a failure occurs, it must be shut down for maintenance. After maintenance, the machine must pass the whole machine debugging and inspection before it can be used. The inspection and debugging of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCY02E40/40Y02E40/22Y02E40/20
Inventor 韩永清张耀军李晓岭杨勇祁虎威张伟华
Owner 天津华翔电气集团股份有限公司
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