Active filter suitable for suppressing pulse power current ripples

A technology of source filter and pulse power, which is applied in the field of active filter, can solve the problems such as the decrease of the overall efficiency of the converter, the deterioration of dynamic response, and the excessive input filter parameters, and achieve simple structure, strong practicability, and design adjustment flexible effects

Active Publication Date: 2016-04-20
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0002] The input filtering method of the traditional passive filter is to achieve the specified input current pulsation range, and the required input filter parameters are too large, which will lead to serious problems such as the decrease of the overall efficiency of the converter and the deterioration of the dynamic response.

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  • Active filter suitable for suppressing pulse power current ripples

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[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] as attached figure 1 As shown, the active filter suitable for pulse power current ripple suppression of the present invention includes a passive filter, a pulse power converter, a bidirectional power converter and an active filter energy storage capacitor. The active filter realizes effective suppression of pulse power current ripple by controlling the working modes of the pulse power converter and the bidirectional power converter.

[0015] The passive filter is an LC filter, including an inductor L A and capacitance C A , where the inductance L A Connect one end of the input end, L A ...

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Abstract

The invention provides an active filter suitable for suppressing pulse power current ripples. The active filter comprises a passive filter, a pulse power converter, a bi-directional power converter and an active filter energy-storage capacitor, wherein the passive filter consists of an inductor and a capacitor; the pulse power converter comprises a switch tube, a diode, an inductor and a capacitor; the bi-directional power converter comprises two switch tubes and an inductor; the active filter energy-storage capacitor consists of a capacitor. According to the active filter suitable for suppressing the pulse power current ripples, provided by the invention, effective suppression on the pulse power current ripples is realized by controlling the working modes of the pulse power converter and the bi-directional power converter; the structure is simple, the design and the regulation are flexible, and higher practicability is obtained.

Description

technical field [0001] The invention belongs to the technical field of active filtering, and in particular relates to an active filtering for realizing pulse power current ripple suppression. Background technique [0002] The input filtering method of the traditional passive filter is to achieve the specified input current pulsation range, and the required input filter parameters are too large, which will lead to serious problems such as the decrease of the overall efficiency of the converter and the deterioration of the dynamic response. Therefore, considering various factors such as volume, quality, cost and electrical index, the scheme of active filter based on bidirectional power converter should be adopted. Contents of the invention [0003] In order to solve the problems in the prior art, the present invention proposes an active filter suitable for pulse power current ripple suppression, by controlling the working mode of the pulse power converter and the bidirection...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/14
CPCH02M1/143
Inventor 张东来谷雨
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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