CN111245251A - 单开关斩控调压工变补偿的交流稳压电源 - Google Patents
单开关斩控调压工变补偿的交流稳压电源 Download PDFInfo
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
- H02M5/2932—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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, current or power
Abstract
本发明属于斩控调压补偿式交流稳压电源，它有单相和三相两种，三相由3个单相星形连接组成。单相单开关斩控调压工变补偿的交流稳压电源，它由升压高频变压器T1、工频补偿变压器T2、1个双向开关S、1个电感L3、1个耦合电感Z或电感L1和L2、5个电容C1～C5及其控制电路组成，S1由2个二极管和2个三极管或4个二极管和1个三极管组成，Z是2个相同绕组绕在同一个磁芯上组成电感L1、L2，由3个单相单开关斩控调压工变补偿的交流稳压电源星形连接组成1个三相斩控调压工变补偿式交流稳压电源，本发明具有双向开关数量最少、结构简单、成本低、效率高、精度高、性价比高、连续无级无触点转换调节、效益好等优点。
Description
[一]技术领域
本发明涉及交流斩控调压和用工频变补偿变压器补偿电压补偿式交流稳压电源。
[二]背景技术
交流斩控调压具有连续无级无触点调压精度高性价比高等优点，是目前补偿式交流稳压电源的发展方向，同一发明人的多种四开关斩控调压工变补偿式交流稳压电源，存在着双向开关多的缺点，同一发明人发明的双开关半桥斩控调压的工变补偿式交流稳压电源，虽减小了两个双向开关但多了一个带中心抽头的自耦倒相变压器，存在着体积大重量重的缺点。
[三]发明内容
本发明的目的是不用工频自耦变压器倒相还要减小1个双向开关。
为了实现上述目的本发明的单相单开关斩控调压工变补偿的交流稳压电源，它由升压高频变压器T1、工频补偿变压器T2、1个双向开关S、1个电感L3、1个耦合电感Z或2个电感L1和L2、5个电容C1～C5及其控制电路组成，S由2个或4个二极管和2个或1个三极管组成，有1个交流输入稳压输出公共端(2)，1个交流输入端(1)，1个稳压输出端(3)，其特征在于：耦合电感Z是2个绕组绕在同一磁芯上的电感L1和L2，电容C1、C2与电感L1、L2交叉连接，交流输入端(1)与T2次级绕组W2一端、T2初级绕组W1一端、电容C3一端、双向开关S1一端连接，双向开关S1另一端(4)与电感L1一端、电容C2一端连接，电感L1另一端(5)与电容C1一端、变压器T1初级绕组W1一端连接，T1初级绕组W1另一端(6)与电容C2另一端、电感L2一端连接，T1次级绕组W2一端(7)与电感L3一端连接，电感L3另一端(8)与电容C4一端、T2初级绕组W1另一端连接，稳压输出端(3)与T2次级绕组W2另一端，电容C5一端连接，交流输入稳压输出公共端(2)与电感L2另一端、电容C1另一端，电容C3另一端、电容C4另一端、电容C5另一端、T1次级绕组W2另一端连接。T1次级绕组W2的匝数是初级绕组W1的匝数2倍从上。
由上述3个单相单开关斩控调压工变补偿的交流稳压电源组成1个三相斩控工变补偿式交流稳压电源，其特征在于：有3个交流输入端(A1、B1、C1)，3个稳压输出端(A2、B2、C2)，1个交流输入和稳压输出的公共端(N)。
四]附图说明
附图1是本发明一种单相单开关斩控调压工变补偿的交流稳压电源。附图2是本发明的一种三相斩控调压工变补偿的交流稳压电源，它由3个附图1所示的一种单相单开关斩控调压调工变补偿的交流稳压电源星形连接组成。附图3是本发明的另一种单相单开关斩控调压工变补偿的交流稳压电源。附图4是本发明的另一种三相斩控调压工变补偿的交流稳压电源，它由3个附图3所示的另一种单相单开关斩控调压调工变补偿的交流稳压电源星形连接组成。其中：S是双向全控开关，Z是耦合电感，L1，L2、L3是电感，T1是高频升压变压器、T2是工频补偿变压器，W1和W2是T1和T2初级绕组和次级绕组，V1、V2是三极管，D1、D2是二极管，C1～C5是电容，两种三相斩控调压工变补偿的交流稳压电源都有3个交流输入端A1、A2、A3，3个稳压输出端A2、B2，C2。1个输入输出公共端N。
[五]具体实施方式
由附图1可知：一种单相单开关斩控调压工变补偿的交流稳压电源，它由升压高频变压器T1、工频补偿变压器T2、1个双向开关S、5个电容C1～C5、1个电感L3、1个耦合电感Z及其控制电路组成，S由2个二极管D1、D2和2个三极管V1、V2组成，其工作原理如下：
在S通时，电感L1、T1初级绕组W1、L2回路有电流，同时C1通过L1充电储能，C2通过L2充电储能。
在S断时，C1储能通过T1初级绕组W1和电感L2放电续流，C2储能通过T1初级绕组W1和L1放电续流。通过T1初级绕组W1的高频电流在次级感应出升压高频脉冲电压U27，再经L3C3滤波后的电压u82，完原成与输入电压u12一样的波形，而补偿变压器T2的初级绕组W1就连接在输入1端与输出8端之间。
因此，适当选择高频升压变压器T1初次级匝数比，调节开关S的通断比就能使补偿变压器T2初次级绕组W1和W2感应出的补偿电压u18和u13实现双向电压调节，用稳压输出两端电压控制S开关的通断比就能实现稳压。
例如：单相220伏交流稳压电源，选T1升压比为3，即初级匝数为1n，次级匝数为3n，双向开关S的通断比从零到最大之间调节时，补偿变压器T2初级绕W1组两端电压的变化如下：
a)当开关S通断比为1∶3，T1升压比为3倍时，8端电压与1端电压相等，工频补偿变压T2的初级绕组W1两端电压接为零，次级W2补偿电压为零。
b)当开关S通断比大于1∶3时，8端电压高于1端电压，工频补偿变压器T2的初级绕组W1两端电压：1端为负，8端为正，T2的次级绕组W2补偿电压方向与输入电压相位相反或相同，实现反向或正向补偿。在通断比为3∶2时，工频补偿变压器T2初级绕组W1上电压为反向电源输入电压220V。
c)当开关S通断比小于1∶3时，8端电压低于1端电压，工频补偿变压器T2的初级绕组W1两端电压：1端为正，8端为负，T2的次级绕组W2补偿电压方向与输入电压相位相同或相反，实现正向或反向补偿。在开关S通断比接近於零时，工频补偿变压器T2初级绕组W1上电压正向电源输入电压接近220V。
由于T1的次级绕组W2和高频电感L3对工频电流的阻抗极低可略去不计，工频补偿变压器T2初级绕组W1上的电流流过L3绕组和T1的W2绕组的电压降接近零，因此，T2的初级绕组W1正向电压也接近於输入电源电压。T2的次级绕组W2补偿电压方向与输入电压相位相同或相反，实现正向或反向补偿。
由上可知只要反馈调节双向开关S的通断比就能实现交流稳压。
附图2所示的是一种三相斩控调压工变补偿的交流稳压电源，是将附图1所示的3个一种单相单开关斩控工变补偿的交流稳压电源星形连接组成，它有3个三极交流输入端(A1、B1、C1)、3个三相交流稳压输出端(A2、B2、C2)和1个输入输出公共端(N)
附图3是本发明的另一种单相单开关斩控工变补偿的交流稳压电源，它是用2个独立电感替代附图1中的1个耦合电感Z，其工作稳压原理与附图1相同。
附图4所示的是另一种三相斩控调压工变补偿的交流稳压电源，它是将附图3所示的3个另一种单相单开关斩控工变补偿的交流稳压电源星形连接组成，它也有3个三极交流输入端(A1、B1、C1)、3个三相交流稳压输出端(A2、B2、C2)和1个输入输出公共端(N)。
本发明中的双向开关S还可用4个二极管和1个三极管组成。本发明具有结构简单、成本低、可靠性好、效率高、开关数量最少，无需转换就能实现连续无级调节等优点，是新一代斩控补偿式交流稳压电源新产品，有较大经济效益和社会效益。
Claims (3)
1.单相单开关斩控调压工变补偿的交流稳压电源，它由升压高频变压器T1、工频补偿变压器T2、1个双向开关S、1个电感L3、1个耦合电感Z或2个电感L1和L2、5个电容C1～C5及其控制电路组成，S由2个或4个二极管和2个或1个三极管组成，有1个交流输入稳压输出公共端(2)，1个交流输入端(1)，1个稳压输出端(3)，其特征在于：耦合电感Z是2个绕组绕在同一磁芯上的电感L1和L2，电容C1、C2与电感L1、L2交叉连接，交流输入端(1)与T2次级绕组W2一端、T2初级绕组W1一端、电容C3一端、双向开关S1一端连接，双向开关S1另一端(4)与电感L1一端、电容C2一端连接，电感L1另一端(5)与电容C1一端、变压器T1初级绕组W1一端连接，T1初级绕组W1另一端(6)与电容C2另一端、电感T2一端连接，T1次级绕组W2一端(7)与电感L3一端连接，电感L3另一端(8)与电容C4一端、T2初级绕组W1另一端连接，稳压输出端(3)与T2次级绕组W2另一端，电容C5一端连接，交流输入稳压输出公共端(2)与电感L2另一端、电容C1另一端，电容C3另一端、电容C4另一端、电容C5另一端、T1次级绕组W2另一端连接。
2.依据权利要求1所述的单相单开关斩控调压工变补偿的交流稳压电源，其特征在于：升压高频变压器T1的升压在2倍以上。
3.一种三相斩控调压工变补偿的交流稳压电源，包括权利要求1所述所的3个单相单开关斩控调压工变补偿的交流稳压电源，其特征在于：由3个单相单开关斩控调压工变补偿的交流稳压电源星形连接组成，有3个交流输入端(A1、B1、C1)，3个稳压输出端(A2、B2、C2)，1个交流输入和稳压输出的公共端(N)。
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