CN102064722A - 单级交流/直流变换器 - Google Patents

单级交流/直流变换器 Download PDF

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Publication number
CN102064722A
CN102064722A CN2010102535192A CN201010253519A CN102064722A CN 102064722 A CN102064722 A CN 102064722A CN 2010102535192 A CN2010102535192 A CN 2010102535192A CN 201010253519 A CN201010253519 A CN 201010253519A CN 102064722 A CN102064722 A CN 102064722A
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circuit
frequency
power frequency
isolation
high frequency
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CN102064722B (zh
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徐�明
孙巨禄
孙超
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FSP Powerland Technology Inc
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FSP Powerland Technology Inc
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Priority to US13/207,435 priority patent/US20120039103A1/en
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    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/425—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a high frequency AC output voltage
    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies 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)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)

Abstract

本发明公布了一种单级交流/直流变换器，包括工频续流电路、隔离传输电路、高频斩波调制电路、工频和高频交流整流电路和滤波电路，其中隔离传输电路的输入端接外部工频电源的输出端，隔离传输电路的电流调制端接高频斩波调制电路的输入端，隔离传输电路的输出端接工频和高频交流整流电路的输入端，高频斩波调制电路的输出端串接工频续流电路后接外部工频电源的输入端，高频交流整流电路的输出端串接滤波电路后接负载。本发明简化了整流环节，从而得到更高的转换效率。

Description

单级交流/直流变换器
技术领域
本发明涉及一种单级交流/直流变换器，属于AC/DC电源隔离传输的技术领域。
背景技术
当我们重新回顾AC/DC电源的功率变换架构，就会发现在整个功率流过程中有重复的功率变换环节。无论在单级PFC AC/DC变换器还是两级式变换(PFC+DC/DC)的AC/DC中，最前端总需要一个工频AC/DC整流环节。但在变压器的副边，又总是需要一个高频的DC/AC整流环节将原边逆变产生并传输过来的高频电能变换为直流。所以，在整个功率传输过程中，存在两次整流动作。这将额外增加线路的转换损耗，降低电源变换效率。
发明内容
本发明目的是针对现有技术存在的缺陷，将整流环节简化为一次，从而得到更高的转换效率，提供了一种单级交流/直流变换器。
本发明为实现上述目的，采用如下技术方案：
本发明单级交流/直流变换器，包括工频续流电路、隔离传输电路、高频斩波调制电路、工频和高频交流整流电路和滤波电路，其中隔离传输电路的输入端接外部工频电源的输出端，隔离传输电路的电流调制端接高频斩波调制电路的输入端，隔离传输电路的输出端接工频和高频交流整流电路的输入端，高频斩波调制电路的输出端串接工频续流电路后接外部工频电源的输入端，高频交流整流电路的输出端串接滤波电路后接负载。
优选地，所述隔离传输电路包括两个半波隔离传输子电路，每个半波隔离传输子电路都有对应设置的输入电感和隔离变压器构成。
优选地，所述高频斩波调制电路两端并联箝位电容。
本发明通过桥式开关管的开关动作，对工频输入电压实现高频斩波调制，从而可以利用小型高频隔离变压器将调制的工频交流电压隔壁传输至副边。同时利用变压器的变比实现电压幅值得调整。如此，利用副边的整流二极管同时实现对工频和高频交流电压信号的整流。
附图说明
图1：本发明电路原理图。
具体实施方式
如图1所示，本发明单级交流/直流变换器，包括工频续流电路1、隔离传输电路2、高频斩波调制电路3、工频和高频交流整流电路4和滤波电路5，其中隔离传输电路2的输入端接外部工频电源的输出端，隔离传输电路2的电流调制端接高频斩波调制电路3的输入端，隔离传输电路2的输出端接工频和高频交流整流电路4的输入端，高频斩波调制电路3的输出端串接工频续流电路1后接外部工频电源的输入端，高频交流整流电路4的输出端串接滤波电路5后接负载。
其中，所述隔离传输电路2包括两个半波隔离传输子电路，每个半波隔离传输子电路都有对应设置的输入电感和隔离变压器构成。
其中，所述高频斩波调制电路3两端并联箝位电容C1。用于低频储能以及对Q1～Q4有箝位作用。
该电路的工作模态为：L2和L1在工频正负半波分别工作。Q2和Q4被PWM调制以实现对输入电感电流(L1和L2电流)的控制，以保证该电流为正弦波形并具有需要的幅值。Q1和Q3分别和Q2和Q4互补工作，以实现有源钳位工作的功能。

Claims (3)

1.一种单级交流/直流变换器，其特征在于包括工频续流电路(1)、隔离传输电路(2)、高频斩波调制电路(3)、工频和高频交流整流电路(4)和滤波电路(5)，其中隔离传输电路(2)的输入端接外部工频电源的输出端，隔离传输电路(2)的电流调制端接高频斩波调制电路(3)的输入端，隔离传输电路(2)的输出端接工频和高频交流整流电路(4)的输入端，高频斩波调制电路(3)的输出端串接工频续流电路(1)后接外部工频电源的输入端，高频交流整流电路(4)的输出端串接滤波电路(5)后接负载。
2.根据权利要求1所述的单级交流/直流变换器，其特征在于所述隔离传输电路(2)包括两个半波隔离传输子电路，每个半波隔离传输子电路都有对应设置的输入电感和隔离变压器构成。
3.根据权利要求1所述的单级交流/直流变换器，其特征在于所述高频斩波调制电路(3)两端并联箝位电容(C1)。
CN2010102535192A 2010-08-13 2010-08-13 单级交流/直流变换器 Expired - Fee Related CN102064722B (zh)

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CN2010102535192A CN102064722B (zh) 2010-08-13 2010-08-13 单级交流/直流变换器
US13/207,435 US20120039103A1 (en) 2010-08-13 2011-08-11 Single-stage ac/dc converter

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115514070A (zh) * 2022-09-26 2022-12-23 深圳易能电科技有限公司 一种高效的充电电路以及应用该充电电路的充电装置

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JP5832177B2 (ja) * 2011-07-12 2015-12-16 ミネベア株式会社 力率改善回路
DE202013009502U1 (de) * 2013-10-24 2013-11-14 Abb Technology Ag Energieversorgungseinrichtung für explosionsgeschützte elektronische Funktionseinheiten
US10944283B2 (en) 2017-12-22 2021-03-09 Industrial Technology Research Institute Distributed single-stage on-board charging device and method thereof
CN110289776B (zh) * 2019-07-30 2024-05-14 广东工业大学 单电感双Boost无桥PFC变换器

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JPH06261543A (ja) * 1993-03-04 1994-09-16 Origin Electric Co Ltd Ａｃ／ｄｃコンバータ
CN1394459A (zh) * 2000-09-27 2003-01-29 松下电器产业株式会社 磁控管驱动电源

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JPH06261543A (ja) * 1993-03-04 1994-09-16 Origin Electric Co Ltd Ａｃ／ｄｃコンバータ
CN1394459A (zh) * 2000-09-27 2003-01-29 松下电器产业株式会社 磁控管驱动电源

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115514070A (zh) * 2022-09-26 2022-12-23 深圳易能电科技有限公司 一种高效的充电电路以及应用该充电电路的充电装置

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