CN107634673A - 软开关辅助电路、三电平三相的零电压转换电路 - Google Patents

软开关辅助电路、三电平三相的零电压转换电路 Download PDF

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CN107634673A
CN107634673A CN201610570714.5A CN201610570714A CN107634673A CN 107634673 A CN107634673 A CN 107634673A CN 201610570714 A CN201610570714 A CN 201610570714A CN 107634673 A CN107634673 A CN 107634673A
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circuit
switch
main
phase
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徐福斌
黄海
邴阳
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Vertiv Tech Co Ltd
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Vertiv Tech Co Ltd
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Priority to CN201610570714.5A priority Critical patent/CN107634673A/zh
Priority to US15/650,020 priority patent/US20180019676A1/en
Priority to EP17181495.7A priority patent/EP3273590A1/en
Publication of CN107634673A publication Critical patent/CN107634673A/zh
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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1582—Buck-boost converters
    • 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
    • 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
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1588—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
    • 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
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H03K17/161—Modifications for eliminating interference voltages or currents in field-effect transistor switches
    • H03K17/162—Modifications for eliminating interference voltages or currents in field-effect transistor switches without feedback from the output circuit to the control circuit
    • H03K17/163—Soft switching
    • H03K17/164—Soft switching using parallel switching arrangements
    • 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
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • 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
    • H02M1/34—Snubber circuits
    • H02M1/342—Active non-dissipative snubbers
    • 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)
  • Inverter Devices (AREA)
  • Electronic Switches (AREA)

Abstract

本发明公开了一种软开关辅助电路，包括：辅助耦合电感，其被配置为从连接到所述软开关辅助电路的主电路的各支路接收电流，并且进行均流输出；钳位二极管，其被配置为从所述辅助耦合电感接收电感电压并且回馈到所述主电路的主开关管；辅助开关管，其被配置为从所述主电路的主开关管接收电流并且输出到所述钳位二极管；本发明还公开了一种三电平三相的零电压转换电路，通过本发明能够降低硬开关损耗，提升系统开关频率，提高效率并降低电磁干扰。

Description

软开关辅助电路、三电平三相的零电压转换电路
技术领域
本发明属于电力电子技术领域，具体涉及一种软开关辅助电路、三电平三相的零电压转换电路。
背景技术
电力电子装置的发展方向是小型化、轻量化、高效化、低成本化。以往通常采取提高开关频率的方法达到这一目标，但是这样会带来诸如额外的开关损耗、电磁干扰噪音、振铃等问题；多电平变换技术实现了在相同开关频率条件下更有效的减小了输出滤波器的体积和重量，同时有效降低输出波形中的谐波含量，降低开关应力、一定范围内能够提高效率、三电平电路已经广泛应用在通信电源、不间断电源UPS、光伏等电力电子电源中。
随着高效、高功率密度、低成本需求的不断增加，利用高性能器件提高开关频率和多电平技术仍无法满足市场竞争的需求。高性能器件应用、通过提高开关频率能够减小无源器件电感、变压器和电容的体积，但同时会带来开关损耗增加，这样效率是否有提升又很难保证，无法同时满足高功率密度和高效率的需求，现有普通器件的工作频率是有限制的，即使随着高性能器件SiC、GaN的发展、工作频率可提升到100kHz乃至MHz、但高性能器件的应用对PCB布局、驱动、有源钳位等技术的要求更加严格，从现有电力电子技术来说、高性能器件的应用及推广还需要很长的一段路程要走，器件应用稳定性及成本是制约的关键。多电平技术、交错、多态等拓扑提出、一定程度上会提高效率，但仍无法满足市场需求，要想实现高效、高功率密度、低成本、必须从实际根本出发，解决开关器件开关损耗大、散热片大、系统工作频率低、磁芯元件尺寸大的问题、普通功率器件MOSFET或IGBT发展迅速，其性能、损耗也在逐渐降低，但是硬开关仍然是系统高功率密度、高效率、低成本一个瓶颈，因此软开关的研究和应用，将会为相关电力电子产品开辟一个更新的领域。
发明内容
有鉴于此，本发明的主要目的在于提供一种软开关辅助电路、三电平三相的零电压转换电路。
为达到上述目的，本发明的技术方案是这样实现的：
本发明实施例提供一种软开关辅助电路，包括：
辅助耦合电感，其被配置为从连接到所述软开关辅助电路的主电路的各支路接收电流，并且进行均流输出；
钳位二极管，其被配置为从所述辅助耦合电感接收电感电压并且回馈到所述主电路的主开关管；
辅助开关管，其被配置为从所述主电路的主开关管接收电流并且输出到所述钳位二极管。
上述方案中，还包括：
续流二极管，其被配置为从所述辅助耦合电感接收电感电压并且输出到所述主电路的主开关管。
本发明实施例还提供一种软开关辅助电路，所述软开关辅助电路与主电路的主开关管并联；所述软开关辅助电路包括辅助耦合电感、钳位二极管及辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与所述钳位二极管连接，所述钳位二极管与所述主开关管的一端连接；所述主开关管的另一端与所述辅助开关管连接，所述辅助开关管与所述钳位二极管连接。
上述方案中，所述辅助耦合电感的另一输出端与续流二极管连接，所述续流二极管与主开关管的一端连接。
本发明实施例还提供一种三电平三相的零电压转换电路，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管及辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的钳位二极管相互连接。
上述方案中，所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
上述方案中，所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两路辅助电路的钳位二极管和续流二极管合为一路相互连接。
本发明实施例还提供一种三电平三相的零电压转换电路，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管及辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接，所述钳位二极管与主开关管的一端连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的辅助开关管相互连接。
上述方案中，所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
上述方案中，所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两续流二极管与主开关管连接。
与现有技术相比，本发明的有益效果：
本发明的软开关辅助电路能够降低硬开关损耗，提升系统开关频率，提高效率并降低电磁干扰，通过特定的载波，能够有效地降低辅助开关变换的次数，能够抵消特定次数的谐波，改善输入的谐波特性，降低输入电流THDi；通过软开关电路中辅助耦合电感，能够减缓锯齿波调制带来辅管电流应力过大的问题，并自动均流辅助支路电流，优化二极管反向恢复特性和电流变化波形；通过辅助有源开关动作，利用耦合电感电压变化强迫转化电流，利用辅助电感和电容谐振，使电流通过辅助二极管能量回馈，改善二极管反向恢复问题和主开关管硬开关问题。
本发明的零电压转换电路无需每相选择使用一个辅助电路实现主管硬开关问题，通过二极管单相导通特性，通过逻辑线与的方式，使用一个耦合电感和一个辅助开关管，一个续流二极管，多个防反灌二极管解决电路系统中主管硬开关问题，降低了三相软开关成本；同时采用特定锯齿波调制，简化PWM控制，让系统的控制特性更优更好。
附图说明
图1为本发明实施例1提供一种软开关辅助电路的电路图；
图2为本发明实施例2提供一种软开关辅助电路的电路图；
图3为本发明实施例3提供一种三电平三相的零电压转换电路的电路图；
图4为本发明实施例3提供一种三电平三相的零电压转换电路的辅助开关管和二极管开通、关断波形图；
图5为本发明实施例3提供一种三电平三相的零电压转换电路的辅助开关管的波形图；
图6为本发明实施例4提供一种三电平三相的零电压转换电路的电路图。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细说明。
本发明实施例提供一种软开关辅助电路，包括：
辅助耦合电感，其被配置为从连接到所述软开关辅助电路的主电路的各支路接收电流，并且进行均流输出；
钳位二极管，其被配置为从所述辅助耦合电感接收电感电压并且输出到所述主电路的主开关管；
辅助开关管，其被配置为从所述主电路的主开关管接收电流并且输出到钳位二极管。
所述软开关辅助电路还包括：
续流二极管，其被配置为从所述辅助耦合电感接收电感电压并且输出到所述主电路的主开关管。
所述软开关辅助电路能够用于DC/DC、交错、多态、两电平或多电平各种逆变或整流拓扑结构中。
本发明实施例还提供一种软开关辅助电路，所述软开关辅助电路与主电路的主开关管并联；包括辅助耦合电感、钳位二极管、辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接，所述钳位二极管与主开关管的一端连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接。
所述辅助耦合电感的另一输出端与续流二极管连接，所述续流二极管与主开关管的一端连接。
本发明实施例还提供一种三电平三相的零电压转换电路，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管、辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的钳位二极管相互连接。
所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两路辅助电路的钳位二极管和续流二极管合为一路相互连接。
本发明实施例还提供一种三电平三相的零电压转换电路，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管、辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接，所述钳位二极管与主开关管的一端连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的辅助开关管相互连接。
所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两续流二极管与主开关管连接。
实施例1：
如图1所示，本发明实施例1提供一种软开关辅助电路，所述软开关辅助电路与主电路的主开关管并联；包括辅助耦合电感Lx、钳位二极管Dx、辅助开关管Sx，所述辅助耦合电感Lx的输入端与主电路的各支路连接，所述辅助耦合电感Lx的输出端与钳位二极管Dx连接，所述钳位二极管Dx与主开关管S的一端连接；所述主开关管S的另一端与辅助开关管Sx连接，所述辅助开关管Sx与所述钳位二极管Dx连接。
所述软开关辅助电路(虚线框内)直接与主开关管S并联，能够实现辅助开关管Sx、主开关管S软开通效果和主管二极管D软恢复，达到虚线电流向实线电流转化时的软化效果；其中钳位二极管Dx能够对辅助开关管Sx和辅助电感电压变化起钳位和能量反馈作用，用于吸收辅助开关管Sx电压应力尖峰，比较适合DC/DC拓扑和小功率场合。
实施例2：
如图2所示，本发明实施例2提供一种软开关辅助电路，所述软开关辅助电路与主电路的主开关管并联；包括辅助耦合电感Tx、钳位二极管Dx1、辅助开关管Sx、续流二极管Dx2，所述辅助耦合电感Tx的输入端与主电路的各支路连接，所述辅助耦合电感Tx的输出端与钳位二极管Dx1连接，所述钳位二极管Dx1与主开关管S的一端连接；所述主开关管S的另一端与辅助开关管Sx连接，所述辅助开关管Sx与所述钳位二极管Dx1连接；所述辅助耦合电感Tx的另一输出端与续流二极管Dx2连接，所述续流二极管与主开关管S的一端连接。
所述辅助耦合电感Tx的输入端与主电路的各支路之间设置有单向导通二极管Dx3。
所述软开关辅助电路(虚线框内)同样直接与主开关管S并联，他也能够实现辅助开关管Sx、主开关管S软开通效果和主管二极管D软恢复，使虚线电流向实线电流转化时进一步的软化；其中Dx1能够对辅助开关管Sx和辅助电感电压变化起钳位和能量反馈作用，Dx2主要起续流钳位和能量回馈作用，主要优点：通过耦合电感可均分转化时的谐振电流、降低辅管开关管、二极管及电感电流应力；且由于Dx3单向导通特性，使无源谐振只能单方向，降低了无源谐振损耗，最大限度把能量反馈到母线电压；利用二极管的单向导通，反向断开(等效为一个无穷大电阻)特性，能够通过逻辑线与组合用于三相系统中，比较适合AC、交错并联、多态，多电平拓扑，大功率优势会更明显。
实施例3：
如图3所示，本发明实施例3提供一种三电平三相的零电压转换电路，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管、辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的钳位二极管相互连接。
所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两路辅助电路的钳位二极管和续流二极管合为一路相互连接。
具体的，参考图4、5，假设R相输出电压在正半周，且PF＝1，此时正桥臂工作在Buck工作模式，R.up1为高频管，R.down2为低频管、一直导通。假设初始状态续流二极管R.d1导通放磁，辅助开关管Up.Aux1和主开关管R.up1关断，电流由R.d1、R.down2、L.R流出去。
Model1(t1～t2):开通Up.Aux1，由于辅助耦合电感Tx.up.Aux限制了辅助回路电流上升率di/dt，即可软化辅助开关管Up.Aux1开通过程，同时辅助耦合电感Tx.up.Aux也降低了R.d1电流下降率di/dt，有效抑制了R.d1的反向恢复电流，实现了R.d1软恢复；由于辅助耦合电感的均流作用，辅助管子的电流应力会均分到每个辅助开关管，降低辅助电流应力。
Model2(t2～t3):待开通Up.Aux1一段时间后，电流全部转移至辅助开关管，伴随LC谐振，实现R.up1并联电容方向充电，下正上负，当电容电压大于R.up1体二极管导通电压时，即实现R.up1体二极管正向导通，LC谐振终止，开通R.up1，同时能够实现R.up1的零电压开通，开始主管Buck充磁模式。
Model3(t3～t4):零电压开通R.up1后，电流从辅助开关管回路转移至主开关管回路，当电流完全转移时，关断Up.Aux1，由于R.up1导通钳位功能，即可实现辅助开关管的近似零电压零电流关断，加上D.up.Aux1单向电流流动特性，LC谐振到零后，即可实现辅助二极管自然换流。
Model4(t4～t5):当需要关断R.up1时，由于电容电压不能突变的特性，且LC谐振阻尼小的特性，LC高频谐振，同样实现R.up1结电容的反向充电，可软化R.up1的关断过程。此时辅助回路和主续流二极管同时承担续流放磁功能。
Model5(t5～t6):当关断R.up1后，同样由于D.up.Aux1单向电流流动特性，LC谐振结束，主续流二极管承担所有续流充磁过程
Model6(t0/t6):一个开关周期结束，开始下一个开关周期，过程如上。
输出电压负半周各器件工作原理与正半周各器件工作原理相同，其它两相的工作原理同R相工作原理一样，不再赘述。
通过图4和图5能够看出，本发明的辅助电路能够降低硬开关损耗，通过软开关电路中辅助耦合电感，能够减缓锯齿波调制带来辅管电流应力过大的问题，并自动均流辅助支路电流，优化二极管反向恢复特性和电流变化波形；通过辅助有源开关动作，利用耦合电感电压变化强迫转化电流，利用辅助电感和电容谐振，使电流通过辅助二极管能量回馈，改善二极管反向恢复问题和主开关管硬开关问题；使主管实现ZVT开通和软关断，二极管反向恢复被弱化；通过软开关的实现，实际时，能够提升系统开关频率，提高效率并降低电磁干扰，通过特定的载波，能够有效地降低辅助开关变换的次数，能够抵消特定次数的谐波，改善输入的谐波特性，降低输入电流THDi。
本发明的零电压转换电路无需每相选择使用一个辅助电路实现主管硬开关问题，通过二极管单相导通特性，通过逻辑线与的方式，使用一个耦合电感和一个辅助开关管，一个续流二极管，多个防反灌二极管解决电路系统中主管硬开关问题，降低了三相软开关成本；同时采用特定锯齿波调制，简化PWM控制，让系统的控制特性更优更好。
实施例4：
如图6所示，本发明实施例4提供一种三电平三相的零电压转换电路，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管、辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接，所述钳位二极管与主开关管的一端连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的辅助开关管相互连接。
所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两续流二极管与主开关管连接。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (10)

1.一种软开关辅助电路，其特征在于，包括：
辅助耦合电感，其被配置为从连接到所述软开关辅助电路的主电路的各支路接收电流，并且进行均流输出；
钳位二极管，其被配置为从所述辅助耦合电感接收电感电压并且回馈到所述主电路的主开关管；
辅助开关管，其被配置为从所述主电路的主开关管接收电流并且输出到所述钳位二极管。
2.根据权利要求1所述的软开关辅助电路，其特征在于，还包括：
续流二极管，其被配置为从所述辅助耦合电感接收电感电压并且输出到所述主电路的主开关管。
3.一种软开关辅助电路，其特征在于：所述软开关辅助电路与主电路的主开关管并联；所述软开关辅助电路包括辅助耦合电感、钳位二极管及辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与所述钳位二极管连接，所述钳位二极管与所述主开关管的一端连接；所述主开关管的另一端与所述辅助开关管连接，所述辅助开关管与所述钳位二极管连接。
4.根据权利要求3所述的软开关辅助电路，其特征在于：所述辅助耦合电感的另一输出端与续流二极管连接，所述续流二极管与主开关管的一端连接。
5.一种三电平三相的零电压转换电路，其特征在于，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管及辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的钳位二极管相互连接。
6.根据权利要求5所述的三电平三相的零电压转换电路，其特征在于：所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
7.根据权利要求5所述的三电平三相的零电压转换电路，其特征在于：所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两路辅助电路的钳位二极管和续流二极管合为一路相互连接。
8.一种三电平三相的零电压转换电路，其特征在于，包括：三电平三相主电路、两路辅助电路，所述三电平三相主电路的三条支路的上桥臂分别与一路辅助电路连接构成上软开关电路，所述三电平三相主电路的三条支路的下桥臂分别与另一路辅助电路连接构成下软开关电路，所述两路辅助电路之间连接；所述辅助电路包括辅助耦合电感、钳位二极管及辅助开关管，所述辅助耦合电感的输入端与主电路的各支路连接，所述辅助耦合电感的输出端与钳位二极管连接，所述钳位二极管与主开关管的一端连接；所述主开关管的另一端与辅助开关管连接，所述辅助开关管与所述钳位二极管连接；所述两路辅助电路的辅助开关管相互连接。
9.根据权利要求8所述的三电平三相的零电压转换电路，其特征在于：所述三电平三相主电路的三条支路的上桥臂和下桥臂与辅助电路之间连接有单相导通二极管。
10.根据权利要求8所述的三电平三相的零电压转换电路，其特征在于：所述辅助电路的辅助耦合电感的另一输出端与续流二极管连接，所述两续流二极管与主开关管连接。
CN201610570714.5A 2016-07-18 2016-07-18 软开关辅助电路、三电平三相的零电压转换电路 Pending CN107634673A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109639170A (zh) * 2018-12-19 2019-04-16 合肥工业大学 辅助谐振极有源钳位三电平软开关逆变电路及调制方法
CN118100652A (zh) * 2024-04-29 2024-05-28 厦门理工学院 一种基于自耦变压器的软开关Buck电路及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112564524A (zh) * 2020-09-24 2021-03-26 青岛鼎信通讯股份有限公司 一种应用于直流充电模块的有源自适应辅助网络及方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102150352A (zh) * 2008-09-12 2011-08-10 Mgeups系统公司 转换装置以及配有这种装置的不间断电源
CN202034900U (zh) * 2011-03-31 2011-11-09 武汉诚锐电器有限公司 带rcd钳位电路零电压转换有源软开关校正电路

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19536470A1 (de) * 1995-09-29 1997-04-03 Siemens Ag Verlustarmer Leistungs-Wechselrichter
US6239995B1 (en) * 1999-03-11 2001-05-29 Ndsu Research Foundation Resonant-boost-input three-phase power factor corrector with a low current stress on switches
US8559193B2 (en) * 2010-01-22 2013-10-15 The Board Of Trustees Of The University Of Illinois Zero-voltage-switching scheme for high-frequency converter
US8411473B2 (en) * 2010-12-20 2013-04-02 Allis Electric Co., Ltd. Three-phase power supply with three-phase three-level DC/DC converter
US8687388B2 (en) * 2012-01-31 2014-04-01 Delta Electronics, Inc. Three-phase soft-switched PFC rectifiers
US8891261B2 (en) * 2012-01-31 2014-11-18 Delta Electronics, Inc. Three-phase three-level soft-switched PFC rectifiers
US9806637B2 (en) * 2013-04-30 2017-10-31 Futurewei Technologies, Inc. Soft switching inverter device and method
EP2928038A1 (en) * 2014-03-31 2015-10-07 ABB Technology AG Inductive power transfer system and method for operating an inductive power transfer system
US9722581B2 (en) * 2014-07-24 2017-08-01 Eaton Corporation Methods and systems for operating hybrid power devices using driver circuits that perform indirect instantaneous load current sensing
US9397657B1 (en) * 2014-07-24 2016-07-19 Eaton Corporation Methods and systems for operating hybrid power devices using multiple current-dependent switching patterns
US9705411B2 (en) * 2015-12-08 2017-07-11 Delta Electronics, Inc. Soft-switched bidirectional buck-boost converters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102150352A (zh) * 2008-09-12 2011-08-10 Mgeups系统公司 转换装置以及配有这种装置的不间断电源
CN202034900U (zh) * 2011-03-31 2011-11-09 武汉诚锐电器有限公司 带rcd钳位电路零电压转换有源软开关校正电路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CORENTIN RIZET.ET AL: "Efficiency improvement in soft-switching three-level converters for high power UPS", 《ENERGY CONVERSION CONGRESS AND EXPOSITION》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109639170A (zh) * 2018-12-19 2019-04-16 合肥工业大学 辅助谐振极有源钳位三电平软开关逆变电路及调制方法
CN118100652A (zh) * 2024-04-29 2024-05-28 厦门理工学院 一种基于自耦变压器的软开关Buck电路及装置
CN118100652B (zh) * 2024-04-29 2024-07-09 厦门理工学院 一种基于自耦变压器的软开关Buck电路及装置

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