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Electric energy quality treatment device for RCD load and control method

A control method and power quality technology, applied in active power filtering, AC network to reduce harmonics/ripples, design optimization/simulation, etc., can solve problems such as increasing RCD load harmonic currents

Pending Publication Date: 2022-04-15
上海希形科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the voltage type filter is loaded with RCD, it will also increase the harmonic current of the RCD load

Method used

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  • Electric energy quality treatment device for RCD load and control method
  • Electric energy quality treatment device for RCD load and control method
  • Electric energy quality treatment device for RCD load and control method

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Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0048] According to a kind of power quality control device and control method for RCD load provided by the present invention, such as Figure 1-Figure 6 shown, including:

[0049]A power quality control device for RCD loads includes: a parallel unit and a series unit. The parallel unit is connected to a point of common connection (PCC) of the power grid, the bus bar of the series unit is connected to the bus bar of the parallel unit, and the series unit is connected in series between the common connect...

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Abstract

The invention provides an electric energy quality treatment device for an RCD load and a control method. The electric energy quality treatment device comprises the electric energy quality treatment device for the RCD load. A control method of the series unit; a control method of a parallel unit. Compared with the prior art, the harmonic current of the RCD load can be reduced by controlling the input harmonic voltage of the RCD load, and finally the residual harmonic current of the RCD load is filtered by using the parallel unit.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a power quality control device and control method for RCD loads. Background technique [0002] At present, high-power nonlinear loads and sophisticated electrical equipment coexist in the power grid, which brings various power quality problems. Non-linear loads will generate harmonic currents and cause grid voltage distortion, and the distorted grid voltage will cause interference to sophisticated electrical equipment and fail to work normally. [0003] In this case, various power quality control devices have been developed and applied to factories, shopping malls and residential quarters to improve power quality. At present, there are two main types of power quality control devices: one is a current filter, which is mainly an active power filter (APF) and a dynamic filter compensation device (TSF); the other is a voltage filter Devices, this product is mainly integrated power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/01G06F30/20
CPCY02E40/20
Inventor 张宁
Owner 上海希形科技有限公司