CN204144945U - 一种用于apf主电路的lcl+lc滤波电路 - Google Patents

一种用于apf主电路的lcl+lc滤波电路 Download PDF

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Publication number
CN204144945U
CN204144945U CN201420538233.2U CN201420538233U CN204144945U CN 204144945 U CN204144945 U CN 204144945U CN 201420538233 U CN201420538233 U CN 201420538233U CN 204144945 U CN204144945 U CN 204144945U
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inductance
circuit
electric capacity
filter circuit
lcl
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张华斌
陈杰
安涛
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Beijing Electric Power Automatic Equipment Co ltd
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BEIJING POWER AUTOMATION EQUIPMENT PLANT
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/20Active power filtering [APF]

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  • Power Conversion In General (AREA)

Abstract

一种用于APF主电路的LCL+LC滤波电路。它是由电感、电容、电阻和电感构成的LCL电路以及电容和电感串联而成的LC电路构成,LCL电路和LC电路使A、B、C三相对N相形成了滤波回路,使得滤波电路滤波效果变好,且可以有效减小元件运行时的温升。

Description

一种用于APF主电路的LCL+LC滤波电路
技术领域
本实用新型涉及谐波治理滤波系统,属于电网电力系统治理领域。 
背景技术
当前电网中,谐波的含量越来越多,谐波对电网的正常运行造成危害,影响用电设备的正常工作,增大了电能损耗,严重影响了公共电网的电能质量。为了消除电网中的谐波,提升电能质量,APF在生活中的应用越来越广泛,而传统的APF主电路中的滤波电路只有LCL滤波电路,滤波效果不能达到满意的效果,且元件在运行过程中温升较大,不仅会影响元件的使用寿命,而且会使滤波器的滤波效果变差,影响对电网的整体治理效果。 
发明内容
本实用新型是为了解决滤波电路滤波效果较差,元件温升较高的问题。 
为了解决上述技术问题,本实用新型提供一种LCL+LC滤波电路,用于APF主电路中,APF主电路包括三相整流及逆变电路和滤波电路,滤波电路中除了包含LCL滤波以外,还增加了LC滤波。LCL滤波包含有电感L11、电容C11、电阻R11、电感L12和电感L21、电容C21、电阻R21、电感L22和电感L31、电容C31、电阻R31、电感L32;LC滤波电路包含有电感L13、电容C12和电感L23、电容C22和电感L33、电容C32。 
本实用新型的有益效果为: 
本实用新型在具有LCL滤波电路的基础上,增加了LC滤波回路,可以有效的改善电网的波形,提升谐波治理的效果,并且可以有效地减小元器件的温升。 
附图说明
图1为本实用新型的主电路结构示意图。 
图2为本实用新型滤波效果图。 
具体实施方式
参照图1,主电路包含IGBT整流及逆变电路和滤波电路。IGBT整流及逆变电路经滤波电路与三相电网相连接。三相电网主线每一相都有对N相的两路串联回路:A相对N相电路为C11、R11串联回路和C12、L13串联回路,两个串联回路一端连接在电感L11和L12中间的同一节点上;B相对N相电路为C21、R21串联回路和C22、L23串联回路,两个串联回路一端连接在电感L21和L22中间的同一节点上;相对N相电路为C31、R31串联回路和C32、L33串联回路,两个串联回路一端连接在电感L31和L32中间的同一节点上。 

Claims (2)

1.一种用于APF主电路的LCL+LC滤波电路,主电路包含IGBT整流及逆变电路(1)和滤波电路(2),IGBT整流及逆变电路(1)经滤波电路(2)与三相电网相连接,其特征在于:滤波电路中,三相电网主线每一相都有对N相的两路串联回路:A相对N相电路为电容C11、电阻R11串联回路和电容C12、电感L13串联回路;B相对N相电路为电容C21、电阻R21串联回路和电容C22、电感L23串联回路;C相对N相电路为电容C31、电阻R31串联回路和电容C32、电感L33串联回路。
2.根据权利要求1所述一种用于APF主电路的LCL+LC电路,其特征在于:滤波电路中电感L11、电感L12、电容C11、电阻R11,电感L21、电感L22、电容C21、电阻R21和电感L31、电感L32、电容C31、电阻R31都分别构成了每相的LCL滤波电路,而电容C12、电感L13,电容C22、电感L23和电容C32、电感L33分别构成了每相的LC滤波电路。
CN201420538233.2U 2014-09-19 2014-09-19 一种用于apf主电路的lcl+lc滤波电路 Expired - Lifetime CN204144945U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105071420A (zh) * 2015-08-28 2015-11-18 江苏省电力公司扬州供电公司 一种配电变压器三相电流动态平衡装置及其工作方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105071420A (zh) * 2015-08-28 2015-11-18 江苏省电力公司扬州供电公司 一种配电变压器三相电流动态平衡装置及其工作方法
CN105071420B (zh) * 2015-08-28 2019-05-24 江苏省电力公司扬州供电公司 一种配电变压器三相电流动态平衡装置及其工作方法

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Address after: 100044 Beijing electric power automation equipment factory, No. 31 East Jiaotong University Road, Beijing, Haidian District

Patentee after: BEIJING ELECTRIC POWER AUTOMATIC EQUIPMENT Co.,Ltd.

Address before: 100044 Beijing electric power automation equipment factory, No. 31 East Jiaotong University Road, Beijing, Haidian District

Patentee before: BEIJING ELECTRIC POWER AUTOMATION EQUIPMENT FACTORY

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Granted publication date: 20150204