CN107086765A - 一种谐振缓冲吸收电路 - Google Patents

一种谐振缓冲吸收电路 Download PDF

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CN107086765A
CN107086765A CN201710345666.4A CN201710345666A CN107086765A CN 107086765 A CN107086765 A CN 107086765A CN 201710345666 A CN201710345666 A CN 201710345666A CN 107086765 A CN107086765 A CN 107086765A
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diode
electric capacity
inductance
poles
connect
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刘海明
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection
    • H02M1/34Snubber circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/0048Circuits or arrangements for reducing losses
    • H02M1/0054Transistor switching losses
    • H02M1/0058Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection
    • H02M1/34Snubber circuits
    • H02M1/346Passive non-dissipative snubbers
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

本发明公开了一种谐振缓冲吸收电路,包括电感L1、电感L2、二极管D1、MOS管Q1、电容C1、电容C2和二极管D2,所述电感L1一端连接电源V1,电感L1另一端分别连接电感L2、电容C1和二极管D4正极,二极管D4负极分别连接二极管D3负极、电容C4、电容C3和输出端Vo,二极管D3正极分别连接电容C1另一端和二极管D2负极,二极管D2正极分别连接二极管D1负极和电容C2,二极管D1正极分别连接电感L2另一端和MOS管Q1的D极,MOS管Q1的G极连接信号V2。本发明利用电感L1等无源元件,使Q1实现了零电流开通和零电压关断,提高了电源的工作效率,且相对于其它谐振缓冲吸收电路,降低了生产成本。

Description

一种谐振缓冲吸收电路
技术领域
本发明涉及一种缓冲模块电路,具体是一种谐振缓冲吸收电路。
背景技术
传统的AC/DC全波整流电路采用的是整流+电容滤波电路,这种电路是一种非线性器件和储能元件的组合,输入交流电压的波形是正弦的,但经整流桥整流后输入电流的波形发生了严重的畸变,呈脉冲状,由此产生的谐波电流对电网有危害作用,使电源输入功率因素下降。
本发明模块电路与一般的PFC电路不同的是此电路选用了无损吸收缓冲网络,降低了开关管Q1的开关损耗,提高了其稳定性,增强了其使用寿命,利用电感L1等无源元件,使Q1实现了零电流开通和零电压关断,提高了电源的工作效率,且相对于其它谐振缓冲吸收电路,降低了生产成本。
发明内容
本发明的目的在于提供一种谐振缓冲吸收电路,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:
一种谐振缓冲吸收电路,包括电感L1、电感L2、二极管D1、MOS管Q1、电容C1、电容C2和二极管D2,所述电感L1一端连接电源V1,电感L1另一端分别连接电感L2、电容 C1和二极管D4正极,二极管D4负极分别连接二极管D3负极、电容C4、电容C3和输出端Vo,二极管D3正极分别连接电容C1另一端和二极管D2负极,二极管D2正极分别连接二极管D1负极和电容C2,二极管D1正极分别连接电感L2另一端和MOS管Q1的D极,MOS 管Q1的G极连接信号V2,MOS管Q1的S极分别连接电容C2另一端、电容C3另一端和电容C4另一端并接地。
作为本发明再进一步的方案:所述MOS管Q1采用NMOS管。
与现有技术相比,本发明的有益效果是:本发明利用电感L1等无源元件,使Q1实现了零电流开通和零电压关断,提高了电源的工作效率,且相对于其它谐振缓冲吸收电路,降低了生产成本。
附图说明
图1为谐振缓冲吸收电路的电路图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述。
请参阅图1,本发明实施例中,一种谐振缓冲吸收电路,包括电感L1、电感L2、二极管D1、MOS管Q1、电容C1、电容C2和二极管D2,所述电感L1一端连接电源V1,电感L1另一端分别连接电感L2、电容C1和二极管D4正极,二极管D4负极分别连接二极管 D3负极、电容C4、电容C3和输出端Vo,二极管D3正极分别连接电容C1另一端和二极管 D2负极,二极管D2正极分别连接二极管D1负极和电容C2,二极管D1正极分别连接电感 L2另一端和MOS管Q1的D极,MOS管Q1的G极连接信号V2,MOS管Q1的S极分别连接电容C2另一端、电容C3另一端和电容C4另一端并接地;所述MOS管Q1采用NMOS管。
V1为AC交流电经整流桥整流后得到的脉冲电流信号,当输入信号V2使Q1导通时,因为电感L2中电流不能突变,且C2、C1电压不能突变,Q1中的的电流从零开始增加,缓慢上升,通过D4的电流iD4渐减,Q1实现零电流开通,导通的损耗较小。
当电流iD4减少为零时,D4进入反向恢复状态,通过电感L2的电流iL2=iL1+irD4,D4反向电流irD4的变化率受到电感L2的控制,反向恢复损耗降低。主电感L2中电流缓慢增加,Q1上的电压uQ下降。电容C2通过D2、C1、L2、Q1放电,C2上的电压uC2下降。当uC2下降为零时,C2中的能量完全转向C1、L2。L2中的电流饱和不变,uQ下降变为零, Q1完成零电流开通过程。Q1关断时,L2中的电流iL2通过D1流向C2,C2从零开始充电, Q1实现零电压关断,关断损耗较小。二极管D2、D3使uC2最终钳位在输出电压VL。L2 在导通时存储的能量通过D1、D2流向C1,L2逐渐复位。当L2复位后,C1中的能量通过 D3输出。当C1两端电压变为零时,D4正向导通,Q1完成零电压关断过程。Q1保持关断状态直到开始进入新的开关循环过程。
综上所述,本发明利用电感L1等无源元件,使Q1实现了零电流开通和零电压关断,提高了电源的工作效率,且相对于其它谐振缓冲吸收电路,降低了生产成本。

Claims (2)

1.一种谐振缓冲吸收电路,包括电感L1、电感L2、二极管D1、MOS管Q1、电容C1、电容C2和二极管D2,其特征在于,所述电感L1一端连接电源V1,电感L1另一端分别连接电感L2、电容C1和二极管D4正极,二极管D4负极分别连接二极管D3负极、电容C4、电容C3和输出端Vo,二极管D3正极分别连接电容C1另一端和二极管D2负极,二极管D2正极分别连接二极管D1负极和电容C2,二极管D1正极分别连接电感L2另一端和MOS管Q1的D极,MOS管Q1的G极连接信号V2,MOS管Q1的S极分别连接电容C2另一端、电容C3另一端和电容C4另一端并接地。
2.根据权利要求1所述的谐振缓冲吸收电路,其特征在于,所述MOS管Q1采用NMOS管。
CN201710345666.4A 2017-05-03 2017-05-03 一种谐振缓冲吸收电路 Withdrawn CN107086765A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI650939B (zh) * 2018-05-25 2019-02-11 旭隼科技股份有限公司 一種新型吸收電路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI650939B (zh) * 2018-05-25 2019-02-11 旭隼科技股份有限公司 一種新型吸收電路

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Application publication date: 20170822