CN113285519A - 一种冗余设计的高可靠性电源电路拓扑 - Google Patents

一种冗余设计的高可靠性电源电路拓扑 Download PDF

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CN113285519A
CN113285519A CN202110457341.1A CN202110457341A CN113285519A CN 113285519 A CN113285519 A CN 113285519A CN 202110457341 A CN202110457341 A CN 202110457341A CN 113285519 A CN113285519 A CN 113285519A
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power supply
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capacitors
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张涛
陈鑫
唐才荣
王忠华
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Beijing Urban Construction Intelligent Control Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/23—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Dc-Dc Converters (AREA)

Abstract

本发明涉及一种电路拓扑，尤其是涉及一种冗余设计的高可靠性电源电路拓扑。包括散热结构外壳，以及设置在散热结构外壳内依次连接的励磁浪涌抑制电路、共模扼流圈电路、整流桥电路、DC‑DC开关电源模块、输出LC滤波电路和安全泄放电阻电路。本发明电路设计简洁，输出端的LC滤波电路可以保证电源板卡输出更加稳定的24VDC给负载。设计有安全泄放电阻电路，待电源板卡关闭后能够快速泄放残存在大电容等器件上残留的电流，保护人员安全。

Description

一种冗余设计的高可靠性电源电路拓扑
技术领域
本发明涉及一种电路拓扑，尤其是涉及一种冗余设计的高可靠性电源电路拓扑。
背景技术
任何电子设备都离不开电源，但是由于现场环境所限制，很多用电设备并不是直接使用公共电网，而是通过其他方式进行转化，得到所需电能形式。近几年种类繁多的电子设备发展迅速，对电源尤其是24V工业标准直流电源需求增大，为了解决这一问题，变压电源成为首选。
目前工业用的变压电源中普遍存在体积较大，内部电路器件复杂、散热困难，持续工作时间短，难以提供大功率负载的问题。因此一种大功率、高精度、低损耗、抗干扰性强的变压电源具有十分重要的研究意义。
本发明的目的是针对市电输入，输出高质量DC24V工业设备标准用电，提供了一种冗余设计的高可靠性电源板卡的开发。
发明内容
本发明提供了一种针对市电输入，输出高质量DC24V工业设备标准用电的冗余设计的高可靠性电源板卡的开发。
本发明的上述技术问题主要是通过下述技术方案得以解决的：
一种冗余设计的高可靠性电源电路拓扑，其特征在于，包括散热结构外壳，以及设置在散热结构外壳内依次连接的励磁浪涌抑制电路、共模扼流圈电路、整流桥电路、DC-DC开关电源模块、输出LC滤波电路和安全泄放电阻电路。
作为优选，励磁浪涌抑制电路由压敏电阻和可以消除或者减小输入端公共电网中存在的电磁浪涌，保护后方单元器件，具体包括串联在火线上的熔断器F1，防止短路或过大电流烧毁板卡。火线零线之间并联有压敏电阻R7，待两端电压超过阈值，所述压敏电阻R7阻值为0，火线和零线短路，造成熔断器快速熔断，避免过大电流损伤后续电路，零线上接若干并联热敏电阻组后与共模扼流圈电路连接，所述并联热敏电阻组包括至少两个串联的热敏电阻。
作为优选，共模扼流圈电路包括连接在火线和零线之间的X电容C1和 X电容C2；两个X电容与6个电阻R4,电阻R5,电阻R6,电阻R8,电阻 R11,电阻R12并联对输入电压进行滤波；四个Y电容C7,Y电容C8,Y电容C9,Y电容C10连接在火线和底线之间；共模电感E1和共模电感E2串
联消除噪声和共模干扰。两个与共模电感E2连接的整流桥BRD并联整流后连接LC滤波电路和共模电感进行二次滤波，降低干扰。
作为优选，DC-DC开关电源模块包括型号为PAF600F280-24的开关电源以及外围电路，外围电路包括共模电感E3以及与共模电感E3并联的若干电容和极性电容，开关电源输入端为整流滤波后的310VDC，内部进行逆变整流后输出24VDC。开关电源输出端连接有若干滤波电容，使输出到负载的直流电更加平缓，若干滤波电容由若干并联的电容和极性电容组成。
作为优选，安全泄放电阻电路包括四个泄放电阻R21,泄放电阻R22, 泄放电阻R23,泄放电阻R24，泄放电阻R21和泄放电阻R23串联后，与串联的泄放电阻R22和泄放电阻R24并联。DC-DC开关电源模块的24V输出端连接安全泄放电阻电路。
因此，本发明具有如下优点：1.6U的板卡结构设计满足市面内常用的 6U机笼，支持热插拔的抽插设计有较强的运营维护性能。设备机笼采用双板卡冗余式供电，要求电源板卡输出电压稳定。在单板卡出现故障时，大功率输出的设计满足单电源供电。2.采用屏蔽罩覆盖板卡正面，避免内部功率器件和外界接触，起到保护电源板卡和降低干扰的作用。在发热单元配套有U型散热片，特殊的结构和材料可以增强散热效果,在不借助外界散热帮助的情况下也可正常工作。3.输入端设计有励磁电涌抑制电路，当市电电网中出现瞬态浪涌电压时，火线和零线上并联压敏电阻可以迅速反应，让大电流及时流出。零线上连接NTC电阻清除电路电源接通瞬间出现的过大电流，保护负载和电路安全。4.两个共模扼流圈和LC电路构成的一级滤波电路可以减小输入至整流桥的电压的噪声和共模干扰。双整流桥可以保障整流效率，并且有冗余功能。二级滤波电路将整流桥予以整流输出的 310VDC更加平稳。5.降压单元由PAF600F280-24 DC-DC开关电源模块和输出滤波电路组成。电路设计简洁，输出端的LC滤波电路可以保证电源板卡输出更加稳定的24VDC给负载。6.设计有安全泄放电阻电路，待电源板卡关闭后能够快速泄放残存在大电容等器件上残留的电流，保护人员安全。
附图说明
附图1是本发明的励磁浪涌抑制电路。
附图2是本发明的共模扼流圈电路。
附图3是本发明的整流桥电路BRD1和BRD2为两个整流桥。
附图4是本发明的DC-DC开关电源模块。
附图5是本发明的泄放电阻。
附图6是本发明的励磁浪涌抑制电路另一部分。
具体实施方式
下面通过实施例，并结合附图，对本发明的技术方案作进一步具体的说明。
实施例：
本实施例一种冗余设计的高可靠性电源板卡的开发，包括：散热结构外壳、励磁浪涌抑制电路、共模扼流圈电路、整流桥电路、DC-DC开关电源模块、输出LC滤波电路、安全泄放电阻电路。
下面结合附图具体说明。请参图1。输入端接入220VAC市电，火线上串联有熔断器F1，防止短路或过大电流烧毁板卡。火线零线之间并联有压敏电阻R7，待两端电压超过阈值，所述压敏电阻R7阻值为0，将过大电流及时导出，避免损坏后续电路。
请参图2，两个X电容C1,C2连接在火线和零线之间，与6个电阻 R4,R5,R6,R8,R11,R12并联对输入电压进行滤波。四个Y电容C7,C8,C9,C10 连接在火线和底线之间，用来扼制高频电流。两个共模电感E1,E1串联消除噪声和共模干扰。请参图3的BRD1、BRD2以及C6到R9。两个整流桥并联整流连接LC滤波电路和共模电感进行二次滤波，降低干扰。
请参图4为所述DC-DC开关电源降压模块，PAF600F280-24开关电源输入端为整流滤波后的310VDC，内部进行逆变整流后输出24VDC。输出端连接有滤波电容，使输出到负载的直流电更加平缓。图4中C19到C26为输出LC滤波电路结构。
请参图5为24V输出端连接四个泄放电阻R21,R22,R23,R24。由于电源板卡的特殊功能性，内部电路存在大容量电容等易存电器件，待板卡关闭时，内部残存电量通过泄放电阻泄放至大地。泄放完毕后继电器K1断开，零线恢复连接热敏电阻。
参照图6，图中RLY-P和RLY-N与图1中的RLY-P和RLY-N对应连接。
一种冗余设计的高可靠性电源板卡的开发，6U的板卡结构设计支持现在工业机柜规格，可以直接连接市电电网，应用范围极广。性能方面散热良好，可支持长时间不停机工作。设计思路为为双电源板卡冗余供电，500W 的大功率亦可在特殊情况保证单电源工作。内部多级滤波电路和EMI消除电路能在电网波动较大的环境输出稳定的直流电。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。

Claims (5)

1.一种冗余设计的高可靠性电源电路拓扑，其特征在于，包括散热结构外壳，以及设置在散热结构外壳内依次连接的励磁浪涌抑制电路、共模扼流圈电路、整流桥电路、DC-DC开关电源模块、输出LC滤波电路和安全泄放电阻电路。
2.根据权利要求1所述的一种冗余设计的高可靠性电源电路拓扑，其特征在于，励磁浪涌抑制电路由压敏电阻和可以消除或者减小输入端公共电网中存在的电磁浪涌，保护后方单元器件，具体包括串联在火线上的熔断器F1，防止短路或过大电流烧毁板卡，火线零线之间并联有压敏电阻R7，待两端电压超过阈值，所述压敏电阻R7阻值为0，火线和零线短路，造成熔断器快速熔断，避免过大电流损伤后续电路，零线上接若干并联热敏电阻组后与共模扼流圈电路连接，所述并联热敏电阻组包括至少两个串联的热敏电阻。
3.根据权利要求1所述的一种冗余设计的高可靠性电源电路拓扑，其特征在于，共模扼流圈电路包括连接在火线和零线之间的X电容C1和X电容C2；两个X电容与6个电阻R4,电阻R5,电阻R6,电阻R8,电阻R11,电阻R12并联对输入电压进行滤波；四个Y电容C7,Y电容C8,Y电容C9,Y电容C10连接在火线和底线之间；共模电感E1和共模电感E2串联消除噪声和共模干扰；两个与共模电感E2连接的整流桥BRD并联整流后连接LC滤波电路和共模电感进行二次滤波，降低干扰。
4.根据权利要求1所述的一种冗余设计的高可靠性电源电路拓扑，其特征在于，DC-DC开关电源模块包括型号为PAF600F280-24的开关电源以及外围电路，外围电路包括共模电感E3以及与共模电感E3并联的若干电容和极性电容，开关电源输入端为整流滤波后的310VDC，内部进行逆变整流后输出24VDC，开关电源输出端连接有若干滤波电容，使输出到负载的直流电更加平缓，若干滤波电容由若干并联的电容和极性电容组成。
5.根据权利要求1所述的一种冗余设计的高可靠性电源电路拓扑，其特征在于，安全泄放电阻电路包括四个泄放电阻R21,泄放电阻R22,泄放电阻R23,泄放电阻R24，泄放电阻R21和泄放电阻R23串联后，与串联的泄放电阻R22和泄放电阻R24并联；DC-DC开关电源模块的24V输出端连接安全泄放电阻电路。
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