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CN105515405A - Wide-range step-down 18-pulse self-coupling transformer rectifier - Google Patents

Wide-range step-down 18-pulse self-coupling transformer rectifier Download PDF

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CN105515405A
CN105515405A CN 201510736038 CN201510736038A CN105515405A CN 105515405 A CN105515405 A CN 105515405A CN 201510736038 CN201510736038 CN 201510736038 CN 201510736038 A CN201510736038 A CN 201510736038A CN 105515405 A CN105515405 A CN 105515405A
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rectifier
windings
transformer
step
down
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CN 201510736038
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Chinese (zh)
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牛兰
葛红娟
杨光
江帆
陈思
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南京航空航天大学
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00Fixed transformers not covered by group H01F19/00
    • H01F30/02Auto-transformers
    • 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
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion 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
    • H02M5/04Conversion 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
    • H02M5/10Conversion 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
    • 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003Constructional details, e.g. physical layout, assembly, wiring, busbar connections
    • 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters

Abstract

The invention discloses a wide-range step-down 18-pulse self-coupling transformer rectifier, and the transformer rectifier comprises a step-down 18-pulse self-coupling transformer, a main rectification bridge, and an auxiliary rectification bridge. Each phase of the step-down 18-pulse self-coupling transformer is provided with six windings, wherein the six windings comprise one extended winding, three short windings, and two secondary windings. Through the reasonable design of the turn ratio of the primary and secondary windings of each phase and the voltage vectors of the primary and secondary windings, the rectifier achieves the wide-range step-down of an input voltage, obtains three groups of three-phase AC voltages with the phase difference 37 degrees, and outputs the voltages through a rectification bridge circuit. The rectifier is small in current harmonics, is small in ripples of output voltages, solves a problem that the output voltage of a conventional 18-pulse self-coupling transformer rectifier is difficult to adjust, and can achieve the wide-range output of 28-280V DC voltages.

Description

宽范围降压式18脉冲自耦变压整流器 Wide buck converter 18 pulse autotransformer

技术领域 FIELD

[0001] 本发明属于电能变换领域,具体指一种宽范围降压式18脉冲自耦变压整流器。 [0001] The present invention belongs to the field of power conversion, particularly refers to a wide range of the buck converter 18-pulse autotransformer.

背景技术 Background technique

[0002] 多脉冲整流技术具有结构简单,高效可靠,过载能力强等优点,因而在航空领域应用广泛。 [0002] The multi-pulse rectifier technology has a simple structure, efficient, reliable, strong overload, etc., which are widely used in the field of aviation. 多脉冲整流技术按照输出电压脉冲数可以分为12脉冲,18脉冲,24脉冲,30脉冲等, 使得网侧电流变为相应脉冲数,与输出电压同相位的阶梯波,实现功率因数校正以及谐波抑制功能,且脉冲数越多相应的交流侧电流THD值越低但是变压器结构越复杂。 Multi-pulse rectification according to the output voltage pulse can be divided into the number of pulse 12, pulse 18, pulse 24, pulse 30, etc., such that the grid-side current becomes the number of pulses corresponding to a staircase wave, and an output voltage in phase, and power factor correction to achieve harmony wave suppression function, and the more the lower the number of pulses corresponding to the ac side current THD value the more complex transformer structure. 综合考虑网侧电流THD值以及电路复杂程度选用18脉冲变压整流技术。 Considering the line current THD value selection circuit 18, and the complexity of the pulse transformer rectification.

[0003] 隔离式多脉冲变压整流器通过合理设计变压器绕组结构及变比可以实现28V直流输出。 [0003] isolated by the multi-pulse rectifier transformer turns ratio transformer windings structure and rational design 28V DC output can be achieved. 但是变频输入情况下输出电压调整率变化大,输入电流谐波含量高,难以满足航空标准。 However, large output voltage regulation where the input frequency change, high input current harmonic content is difficult to meet aviation standards. 自耦变压器相较传统的隔离变压器可以有效降低变压器等效容量,减少变压器的体积和重量,同时功率传输效率更高。 Compared to a conventional autotransformer transformer isolation transformer can effectively reduce the equivalent capacity, reducing the volume and weight of the transformer, while the higher power transmission efficiency. 但是传统的18脉冲自耦变压整流器通过桥式变换电路整流输出,输出电压偏高且难以调节,不能满足当前航空领域低压直流供电系统的要求。 However, the conventional variac 18 pulses high and difficult to regulate rectifier for converting the rectified output, the output voltage through the bridge circuit, can not meet the current low voltage DC power supply system aviation. 通过后级级联降压电路虽然可以实现输出电压降压调节但是电路比较复杂且效率降低。 By the stage cascade down circuit while the output voltage of the buck regulator can be achieved, but more complex circuit and reduces efficiency.

发明内容 SUMMARY

[0004] 本发明的目的是实现自耦变压整流器输出电压降压调节,提供一种宽范围降压式18脉冲自耦变压整流器。 [0004] The object of the present invention is to achieve a Variac voltage buck regulator rectifier output to provide a wide range of the buck converter 18-pulse autotransformer.

[0005] 为实现上述目的,本发明采用的方案为: [0005] To achieve the above object, the present invention employs the scheme:

[0006] -种宽范围降压式18脉冲自耦变压整流器。 [0006] - a wide range of species buck 18 Variac pulse rectifier. 所述整流变换器的输入电压经过降压式18脉冲自耦变压器降压调节,产生3组三相交流电压连接整流桥电路,输出电压范围28V-280V〇 The rectified input voltage passes the buck converter 18-pulse autotransformer buck regulator, generates 3-phase AC voltage set circuit connected to the rectifier bridge, the output voltage range of 28V-280V〇

[0007] 所述降压式18脉冲自耦变压器(以A相为例)每相共6个绕组,原边1组延长绕组、3 个短绕组(延长绕组Aa,短绕组ala'、 &/1/、1/&2),副边2个短绕组((31(3,(^2) (^相电压源连接原边延长绕组(Aa)的首端(A),延长绕组末端(a)连接B相副边短绕组(ala,ac2)的中间抽头a,形成电压引出端(a) j相原边3个短绕组(ala'b〃、b〃a2)顺序连接形成2个电压引出端a',b〃,首端(al)及末端(a2)。其中首端(al)及末端(a2)分别连接B相副边短绕组(ala, ac2)顺序连接形成的首端(a 1),C相副边短绕组(blb,ba2)顺序连接形成的末端(a2)。A相副边短绕组(clc,cb2)顺序连接形成电压引出端(c),首端(cl)及尾端(b2)。其中首端(cl)及尾端(b2)分别连接C相原边短绕组(clV,(/ &〃,&〃(32)顺序连接形成的首端((31)及8相原边短绕组(bit/顺序相连形成的尾端(b2)。各相绕组间有公共端但各绕组流过的电流不同。B相和C相 6 windings per phase [0007] The step-down autotransformer 18 pulses (in phase A as an example), an extended set of primary windings, three short winding (winding Aa extension, the winding short-ala ', & / 1/1 / & 2), the secondary side of two short windings ((31 (3, (^ 2) (^ phase voltage source connected to the primary extension winding (Aa) first end (a), to extend the winding end (a) B is connected with the secondary winding short (Ala, AC2) of a center tap, a voltage terminations (a) J 3 short phase primary winding (ala'b〃, b〃a2) sequentially connected to form a leading end voltage 2 ', b〃, the first end (Al) and the end (a2). wherein headend (Al) and the end (a2) are connected to the B-phase short secondary winding (ala, ac2) formed by connecting the first end of the sequence (a 1) , the end (a2) C-phase short secondary winding (blb, ba2) .A sequentially formed by connecting short winding secondary phase (clc, cb2) sequentially connected to form a voltage pickup terminal (C), the first end (Cl) and a trailing end (b2). wherein headend (Cl) and trailing end (b2) are respectively connected to phase C primary short winding (CLV, (/ & 〃, & 〃 (32) sequentially connected to form the first end ((31), and 8 with the primary short winding (tail end (b2) bit / connected sequentially formed there between a common terminal of each phase winding, but the current flowing through the windings of different .B phase C 绕组结构与连接方式与A相相似。 Winding connection structure similar to the A phase.

[0008] 所述宽范围降压式18脉冲自耦变压器通过延长绕组实现对输入电压的降压调节。 [0008] The broad range of 18-pulse autotransformer buck down an input voltage to the regulator extension is achieved by winding. 同时自耦变压器产生3组三相交流电压,且每组电压之间有37°移相(即主电压(V a,Vb,Vc)的幅值为网侧输入相电压(VA,VB,Vc)幅值的Ι/b倍,辅助电压(Va',Vb',V。')和%〃^',¥。〃)的电压幅值为网侧输入相电压(Va,Vb,Vc)幅值的0.767/b倍。 Meanwhile autotransformer generates 3-phase AC voltage groups, and there is 37 ° phase shift amplitude (i.e., primary voltages (V a, Vb, Vc) for network side input phase voltages (VA, VB, Vc between each voltage ) Ι / b times the magnitude of the auxiliary voltage (Va ', Vb', V. ') and% 〃 ^', ¥ .〃) for the network-side voltage magnitude input phase voltage (Va, Vb, Vc) web 0.767 / b times the value. 引出端,a〃的相位分别相差37°,引出端b,V,b〃的相位分别相差37°,引出端c,V,c〃的相位分别相差37°)以A相为例, 原边延长绕组(Aa)的匝数Nn与降压比满足关系: Terminations, respectively a〃 phase difference 37 °, the lead B terminal, phase V, respectively, differ b〃 37 °, the lead end of the C, V, respectively, the phase difference c〃 37 °) to the A phase as an example, primary side winding the extension (Aa) of the step-down ratio Nn turns satisfy the relationship:

Figure CN105515405AD00041

设原边短绕组ala'b〃、b〃a2匝比总和为1,则原边延长绕组(Aa)与原边三个短绕组(ala7b〃、b〃a2) 总和匝数之比) Provided the primary winding ala'b〃 short, b〃a2 turns ratio of the sum of 1, the extension of the primary winding (Aa) and three short primary winding (ala7b〃, b〃a2) ratio of the sum of the number of turns)

Figure CN105515405AD00042

原边三个短绕组(ala\aM/、b〃a2)与原边延长绕组(Aa)的匝数之比为 Short three primary windings (ala \ aM /, b〃a2) ratio of the number of turns of the winding (Aa) and the extension of primary

Figure CN105515405AD00043

副边2个短绕组(clc, cb2)与原边延长绕组(Aa)的匝数之比为 Two short secondary winding (clc, cb2) and the primary winding of the extension (Aa) is the ratio of the number of turns

Figure CN105515405AD00044

B、C相绕组的匝数之比与A相一致。 B, C phase winding A and the ratio of the number of turns is consistent.

[0009] 所述三组整流桥电路并联输出,输出电压为任意时刻三组输入交流电压线电压最大值,输出电压范围28V-280V。 [0009] The three sets of parallel output of the rectifier bridge circuit, the output voltage is input at any time three ac voltage lines maximum voltage, the output voltage range of 28V-280V. 整流桥中二极管按照相应的线电压矢量切换次序导通,其中主桥二极管每一周期各导通80°,辅桥二极管每周期各导通20°。 Bridge rectifier diode conduction voltage vector according to a respective line switching sequence, wherein each of the main bridge diode conducting period of each 80 °, each of the auxiliary bridge diode week turned 20 °.

[0010] 有益效果:与现有的18脉冲自耦变压器的整流变换器相比,本发明提供的宽范围降压式18脉冲自耦变压整流器在原有的18脉冲自耦变压器的基础上每相增加一组延长绕组实现对输入电压的降压调节,解决原有自耦变压整流器输出电压偏高且难以调节的问题。 [0010] The beneficial effects: Compared with a conventional 18-pulse rectifier transformer autotransformer wide range of step-down autotransformer 18-pulse rectifier of the present invention provides each of the original 18 based on the pulse autotransformer phase increases to achieve a set of extended windings of the step-down the input voltage regulator, to resolve the original high autotransformer output voltage of the rectifier and the problem of adjusting. 本发明提供的宽范围降压式18脉冲自耦变压整流器输入电流为18阶梯波,谐波含量小。 Wide pulse autotransformer buck converter 18 of the present invention to provide an input current of 18 step wave, harmonic content is small. 本发明所述的降压式自耦变压整流器实现28V-280V宽范围电压输出,拓宽变压整流器应用范围。 Step-down autotransformer rectifier according to the present invention is to achieve a wide range of 28V-280V output voltage, transformer rectifier widening range of applications.

附图说明 BRIEF DESCRIPTION

[0011] 附图1为降压式18脉冲自耦变压整流器电路图; [0011] Figure 1 is a buck converter circuit diagram of a 18-pulse autotransformer;

[0012] 附图2为自耦变压器绕组绕制图; [0012] Figure 2 is a drawing about the autotransformer winding;

[0013]附图3为自耦变压器绕组结构图; [0013] Figure 3 is a structural view autotransformer winding;

[0014]附图4为自耦变压器输入电流波形图; [0014] Figure 4 is a waveform diagram showing an input current of the autotransformer;

[0015]附图5为系统A相输入电流与电压仿真波形; [0015] Figure 5 is a system A and a voltage input current simulation waveforms;

[0016]附图6为系统输出电压仿真波形; [0016] Figure 6 is a simulation waveform of the output voltage of the system;

[0017] 上面附图中的主要符号说明:VA,VB,Vc--网侧三相输入电压,iA,iB,ic--三相输入电流,Nn--原边延长绕组(以A相为例:Aa)匝数,NP1,Np2--原边短绕组(以A相为例: a W或b〃 a2、Y b〃)匝数,Ns--副边短绕组(以A相为例:c 1 c,cb2)匝数,Va,Va',Va〃一一引出端电压,,t/,(/,a〃,b〃,c〃--电压引出端,U。--输出电压,Id--输出电流有效值 [0017] DESCRIPTION OF REFERENCE SYMBOLS above drawings: VA, VB, Vc-- grid side three-phase input voltage, iA, iB, ic-- three-phase input current, Nn-- extended primary winding (the A phase Example: Aa) turns, NP1, Np2-- short primary winding (the A phase as an example: a W or b〃 a2, Y b〃) turns, the secondary winding short Ns-- (relative to Example A : c 1 c, cb2) turns, Va, Va ', the terminal voltage of the lead Va〃 eleven ,, t /, (/, a〃, b〃, c〃-- voltage terminations, U .-- output voltage , Id-- rms output current

具体实施方式 detailed description

[0018] 下面对本发明技术方案进行详细说明,但是本发明的保护范围不局限于所述实施例。 [0018] Next, the technical solution of the present invention in detail, but the scope of the present invention is not limited to the embodiments.

[0019] 实施例:如图1所示为降压式18脉冲自耦变压整流器电路图,降压比b = 2,输出电压υ〇=14〇ν。 [0019] Example: a buck-type rectifier 18-pulse autotransformer circuit diagram shown in FIG. 1, step-down ratio b = 2, the output voltage υ〇 = 14〇ν. 所述系统中的降压式18脉冲自耦变压器(以A相为例)每相原边分别有1组延长绕组、3个短绕组(延长绕组Aa,短绕组&1&\&4〃、1/ &2),副边有2个短绕组((31(3,(^2),见图2。绕组具体连接方式:A相原边延长绕组(Aa)的首端(A)为A相电压输入端,连接输入电压源,末端(a)与B相副边短绕组(ala,ac2)顺序连接形成的中间抽头a连接,形成电压引出端(a) J的原边3个短绕组(ala7b〃、b〃a2)顺序连接形成2个电压引出端a',b〃,首端3个短绕组( &1&/、&/1/、1/ &2)顺序连接形成的首端(&1),末端(&2)分别连接时目副边2个短绕组(a la,ac2)顺序连接形成的首端(a 1),C相副边2个短绕组(b 1 b,ba2)顺序连接形成的末端(a2)的末端(&2)2相副边短绕组(clc,cb2)顺序连接形成电压引出端(c),副边短绕组(clc,cb2)顺序连接形成首端(cl)、尾端(b2)分别与C相原边短绕组(clV,(/ &〃,&〃(32)顺序连接形成的首端 The buck 18-pulse autotransformer system (in phase A as an example) with the primary side of each, respectively, 1 sets of elongated windings, three short winding (extended winding Aa, short winding & a & \ & 4 〃, 1 / & 2) , the secondary winding has two short ((31 (3, (^ 2), see Figure 2. DETAILED winding connection possibilities: a phase primary winding extension (Aa) first end (a) for the phase a voltage input terminal connected input voltage source, the intermediate terminal (a) and the B-phase secondary winding short (Ala, AC2) sequentially connected to form a tap connected to a voltage lead terminal (a) side J of the primary winding 3 short (ala7b〃, b〃 a2) sequentially connected to form two voltage leading end a ', b〃, the head-end 3 short windings (& 1 & / & / 1/1 / & 2) sequentially connected to form the first end (& 1), the end (& 2), respectively, connecting the secondary side of two short winding can mesh (a la, ac2) headend (a 1) connected sequentially formed, C-phase secondary side two short windings (b 1 b, ba2) sequentially connected end formation (a2) is end (& 2) 2 with secondary short winding (clc, cb2) sequentially connected to form a voltage pickup terminal (c), the secondary short winding (clc, cb2) sequentially connected to form a head end (cl), the trailing end (b2) respectively, short phase C primary winding (CLV, (/ & 〃, & 〃 (32) formed by sequentially connecting the headend (cl)及Β相原边短绕组(bib',1/,,(3%2)顺序相连形成的尾端卬2)相连接。B相和C相的连接方式与A相相似。 (Cl) and a primary-side short Β phase winding (bib ', 1 / ,, tail (3% 2) connected to form a sequence of Ang 2) connected .B phase C is connected to phase A similar manner.

[0020] 降压式自耦变压器通过每相增加一组延长绕组实现对输入电压的降压调节,实现28V-280V宽范围电压输出。 [0020] The step-down autotransformer for each phase increases to achieve a set of extended windings of the step-down the input voltage is adjusted to achieve a wide range of 28V-280V voltage output. 自耦变压器每相增加的延长绕组与其每相原边3个短绕组之间具有一定的匝比关系。 Having a certain relation between the turns ratio of the autotransformer windings of each phase of each phase to increase the extension of the primary winding 3 short thereto. 以A相为例,设原边短绕组&1&/、&/1/、1/ /&2匝比总和为1,则原边延长绕组(Aa)与原边三个短绕组(ala7、& /1/、1/&2)总和匝数之比为0.716:1。 In phase A, for example, arranged side primary short winding & 1 & / & / 1/1 / / & 2 turns 1, the primary extension winding (Aa) with the primary three short windings (Ala7 than the sum of, & / 1 / 1 / & 2) than the sum of the number of turns of 0.716: 1. 原边延长绕组(Aa)的匝数Nn与降压比满足关系: Nn is the number of turns to extend down the primary winding (Aa) satisfies the relation:

Figure CN105515405AD00051

泽压式自耦变压器每相原边短绕组,副边短绕组与原边延长绕组之间有固定的匝比以实现自耦变压整流器的3 组三相交流电压输出且每组电压之间产生37°移相。 Ze pressure autotransformer short primary winding, secondary winding and the primary short extension has generated between the turns ratio of windings between the fixed three groups to achieve a three-phase AC voltage autotransformer and the rectifier output voltage of each phase of each group 37 ° phase shift. 原边三个短绕组(ala\aM/、b〃a2)与原边延长绕组(Aa)的匝数之比为0.29875:0.4025:0.29875:0.716。 Short three primary windings (ala \ aM /, b〃a2) extended with a primary winding (Aa) is a turns ratio of 0.29875: 0.4025: 0.29875: 0.716. 副边2个短绕组(clc, cb2)与原边延长绕组(Aa)的匝数之比为0.15896:0.15896:0.7163X相绕组的匝数之比与A相一致。 Two short secondary winding (clc, cb2) and the primary winding of the extension (Aa) is a turns ratio of 0.15896: 0.15896: 0.7163X phase winding A and the ratio of the number of turns is consistent. 根据上述连接方式与匝比关系,引出端a',1/,(/超前引出端a,b,c 37°,引出端&〃,1/,(/滞后超前引出端&,13,(3 37°。变压器引出端电压^,~,1')幅值与网侧输入电压(Va)幅值满足以下关系:Va = 0 · 5Va,Va' = Va〃 = 0 · 3835Va。 According to the above-described connection mode turns ratio relationship between leading ends a ', 1 /, (/ lead terminations a, b, c 37 °, the lead end & 〃, 1 /, (/ lag-lead terminations &, 13, (3 . 37 ° extraction voltage transformer ^, ~, 1 ') and the amplitude of the network side input voltage (Va) amplitude satisfy the following relation: Va = 0 · 5Va, Va' = Va〃 = 0 · 3835Va.

[0021] 降压式18脉冲自耦变压器形成一组主交流输入电压以3,%,¥。 [0021] 18-pulse autotransformer buck form a set of AC input voltage to 3,%, ¥. ),两组辅交流输入电压(Vy,Vv,V〃)和(V a〃,Vb〃,V。"),分别与相应的主整流桥和辅助整流桥相连接。降压式P型18脉冲自耦变压器为非对称型结构,所有的矢量电压经过整流桥并联输出,输出电压为任意时刻线电压最大值。整流桥中二极管按照相应的线电压矢量切换次序导通,其中主桥二极管每一周期各导通80°,辅桥二极管每周期各导通20°。降压式自耦变压整流器输出电压U〇=140V〇 ), Two auxiliary AC input voltage (Vy, Vv, V〃) and (V a〃, Vb〃, V. "), Each connected to a respective bridge main rectifier and auxiliary rectifier bridge. 18 P-type buck pulse autotransformer asymmetric structure, all vectors parallel output voltage through the rectifier bridge, the output voltage of the maximum line voltage at any time. rectifier bridge diodes in a corresponding line voltage vector turned switching sequence, wherein each of the main bridge diode a conduction period of each 80 °, each of the auxiliary bridge diode week turned 20 °. buck converter output voltage autotransformer U〇 = 140V〇

[0022] 为验证本发明的有效性,以附图1中降压式18脉冲自耦变压整流器电路图,降压比为2为例进行仿真试验。 [0022] To verify the effectiveness of the present invention, in the figures 1 to 18-pulse autotransformer buck rectifier circuit diagram showing, step-down ratio of 2 an example for simulation. 图2所示为降压式18脉冲自耦变压器绕组绕制图,说明各相绕组的具体连接方式及绕组电流流向。 Figure 2 is a buck-type 18-pulse autotransformer winding winding drawing, detailed description of each phase winding and a winding current flow connection. 图3所示为降压式18脉自耦变压器的绕组结构图,主交流输入电压(¥ 3,¥^¥。)与两组辅交流输入电压(¥^,¥^,¥。〇和(¥3〃,¥^',¥。〃)之间分别有生37°移相。电压幅值关系以A相为例,变压器引出端电压(V a,W,Va〃)幅值与网侧输入电压(VA)幅值满足以下关系上=0.5¥/^^=¥ 3〃=0.3835¥/1。图4所示为降压式18买自耦变压器输入电流理论波形图,图中可以看出输入电流为18阶梯波。在115V/400HZ输入,28V 20A纯阻性负载输出时,变压整流系统的输入电流波形如图5所示,输入电流为18阶梯波,主要谐波为17、19 次谐波,总谐波含量为8.37%,满足航空领域谐波标准的要求。附图6为直流输出电压波形, 电压输出值为140.43V,电压纹波值为0.2087V,电压纹波小,输出电压平稳,系统稳定。 FIG winding structure shown in FIG buck pulse autotransformer 18, AC input voltage (¥ 3, ¥ ^ ¥.) 3 and the two auxiliary AC input voltage (¥ ^, ¥ ^, ¥ .〇 and ( ¥ 3〃, respectively, between the animate ¥ ^ ', ¥ .〃) 37 ° phase shift. A phase voltage amplitude relationship to an example, the transformer terminal voltage lead (V a, W, Va〃) amplitude and network side input voltage (VA) satisfies the following relationship magnitude = 0.5 ¥ / ^^ = ¥ 3〃 = 0.3835 ¥ / 1. FIG. 4 Buy autotransformer theory input current waveform of FIG. 18 is a step-down, can be seen in FIG. 18 is a step input current wave at 115V / 400HZ input, when 28V 20A purely resistive load output, the input current waveform rectification transformer system shown in Figure 5, the input current is stepped wave 18, 17 of the main harmonic, 19 harmonics, total harmonic content of 8.37%, to meet the harmonic standards aviation requirements. Figure 6 is a DC output voltage waveform, the voltage output value is 140.43V, ripple voltage is 0.2087V, small voltage ripple , stable output voltage, the system is stable.

Claims (2)

  1. 1. 宽范围降压式18脉冲自禪变压器的绕组结构与连接方式,其特征在于:变压器每相6 个绕组,其中原边4个绕组,副边2个绕组,WA相为例,该自禪变压器的绕组结构及绕组具体连接方式为:原边4个绕组,其中一组延长绕组^3),3个短绕组(313\3/1/、1/32),副边2个短绕组(clc,cb2),原副边各绕组流过的电流不同,但绕组间有公共端,A相原边延长绕组(Aa)的首端(A)为A相电压输入端,连接输入电压源(Va),末端(a)与B相副边短绕组(ala, ac2)顺序连接形成的中间抽头a连接,共同形成电压引出端(a), A相的3组原边短绕组(曰1曰/、曰/b"、b"a2)顺序连接形成2个电压引出端曰/,b" ;3组原边短绕组(曰1曰/、曰/b"、b"a2) 顺序连接形成的首端(al)与B相副边2个短绕组(ala, ac2)顺序连接的首端(al)相连接;3组原边短绕组(曰1曰\曰、"、1/曰2)顺序连接的末端(曰2)连接(:相副边2个短绕组化化, 1. The winding configuration and connection wide pulse from Zen buck transformer 18, wherein: the transformer windings per phase 6, wherein the primary winding 4, two secondary windings, WA phase, for example, from the winding structure Zen transformer and the winding of the specific connection mode: primary four windings, one set of extended windings ^ 3), 3 short winding (313 \ 3/1/1/32), the secondary side 2 short windings (CLC, CB2), the current primary and secondary windings flows different, but inter-winding common terminal, the a-phase primary extended winding (Aa) first end (a) is the a phase voltage input terminal connected to an input voltage source ( Va), an intermediate terminal (a) connected in sequence to the B-phase secondary short winding (ala, ac2) taps formed a connection, together form a voltage pickup terminal (a),. 3 set of primary short winding of phase a (said one said /, said / b ", b" a2) sequentially connected to form two voltage pickup terminal reads /, b "; 3 set of primary short winding (said one said / said / b", b "a2) sequentially formed by connecting head end (Al) and the B-phase secondary side two short winding (Ala, AC2) serially connected headend (Al) is connected; 3 set of primary short winding (said one said \ say, "1 / said 2) terminal sequence of the connection (say 2) is connected (: phase secondary windings of the two short of, 6曰2)顺序连接形成的末端相连接(a2);A相副边2个短绕组(clc,cb2)顺序连接形成电压引出端(C); 副边短绕组klc,cb2)顺序连接形成首端(C)连接C相原边短绕组(ClC^ ,C^a",a"c2)顺序连接形成的首端(Cl);副边短绕组(clc,cb2)顺序连接形成尾端(b2)与B相原边3个短绕组化化/,b/ C",c"b2)顺序相连形成的尾端化2)相连接,B相和C相的连接方式与A相相似。 Terminal 6 reads 2) sequentially connected to form a connected (a2); A-phase secondary side two short windings (clc, cb2) sequentially connected to form a voltage pickup terminal (C); secondary short winding klc, cb2) sequentially connected to form a first end (C) connected to the C phase side primary short winding (ClC ^, C ^ a ", a" c2) sequentially connected to form the first end (CI); secondary short winding (clc, cb2) sequentially connected to form a trailing end (b2) and B-phase primary windings of the three short of /, b / C ", c" tail b2) connected to form a sequence of 2) is connected, B phase and C-phase with a similar connection.
  2. 2. 降压式18脉冲自禪变压器实现对输入电压宽范围(28V-280V)调节的方法及其绕组应比关系,其特征在于:在权利要求1的基础上,自禪变压器每相原副边绕组之间满足一定的应比关系,WA相为例,说明具体的应比关系:设原边3个短绕组(曰1曰/、曰/1/、1/曰2)应数比总和为1,原边延长绕组(Aa)的应数Nn与降压比满足关系:7^)/2.99.原边延长绕组(Aa)与原边;个短绕组(313\3、"、1/32)总和应数之比为(VW-1-71)/2.99:1, 原边S个短绕组(ala/、a/b"、b"a2)与原边延长绕组(Aa)的应数之比为0.29875:0.4025: 0.29875:(7^^-7^)/2.99,副边2个短绕组((31(3,诚2)与原边延长绕组(4曰)的应数之比为0.15896:0.15896:(7^^-7^)/2.99,自禪变压器输出主电压(¥3,化,¥。)幅值为网侧输入相电压(Va,Vb,Vc)幅值的1/b倍,辅助电压(Va',Vb',V。')和(Va",Vb",V。")的电压幅值为网侧输入相电压(Va,Vb,Vc)幅值的0.767/b倍, To achieve a wide input voltage range (28V-280V) and the method of adjusting the ratio of windings should be 18 2. Relationship pulse from the step-down transformer Chan, characterized in that: in the appended claim 1 based on each phase of the transformer primary and secondary windings from Zen should satisfy a certain relationship between the ratio of the windings, WA with an example, a specific relationship should be higher than: provided the primary winding 3 short (say 1 reads / reads / 1/1 / said 2) should be the sum of the ratio of the number of 1, with the number Nn should extend down the primary winding (Aa) satisfies the relation: ^ 7) / 2.99 extended primary winding (Aa) and the primary side; short winding (313 \ 3 ", 1/32. ) is the sum of the ratio of the number shall be (VW-1-71) /2.99:1, S short primary winding (ala /, a / b ", b" a2) and the primary winding of the extension (Aa) shall be the number of ratio of 0.29875: 0.4025: 0.29875: (^^ 7 --7 ^) / 2.99, the secondary winding short 2 ((31 (3, 2 Prudential) with the primary winding of the extension (4 reads) the ratio of the number should be 0.15896 : 0.15896: (^^ 7 --7 ^) / 2.99, the main transformer output voltage from Zen (. ¥ 3, of, ¥) to the network side input amplitude phase voltage (Va, Vb, Vc) magnitude of 1 / b times, the auxiliary voltage (Va ', Vb', V. ') and (Va ", Vb", V. ") for the network-side voltage magnitude input phase voltage (Va, Vb, Vc) amplitude 0.767 / b times, 出端曰,曰/,a"的相位分别相差37°,引出端b,b/, b"的相位分别相差37°,引出端c,c/,c"的相位分别相差37°,B、C相绕组的应数之比与A相一致。 The end of said, said /, a "phase respectively differ 37 °, leading ends b, b /, b" phases respectively differ 37 °, leading ends c, c /, c "phases respectively differ 37 °, B, C-phase winding a and the ratio of the number should be consistent.
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