TWI338997B - A coordinate control apparatus in parallel three-phase boost ac/dc converters - Google Patents

Description

2〇11年1月^日修正替換頁 、發明說明： ·~ - 【發明所屬之技術領域】 電力電子技術領域 本發明係關於並聯交直流轉換器之環流控制 【先前技術】 現有技術最常使用以避免並聯轉換器產生環流的方法，便 是採用線頻60Hz(或50Hz)隔離變壓器的方式，但其缺點則為 體積大重量重又佔空間，而最新研究的現況則可^“ieee TRANSACTION ON POWER ELECTRONICS, VOL· 17 NO 5 PP. 60+9415, SEPT· 2002”之論文暸解一般，該論文作者係國際’ 非常著名的學者Dushan Boroyevich與Fred C. Lee等人，皆為2〇11月1日 Revision replacement page, invention description: ·~ - [Technical field of invention] Power electronics TECHNICAL FIELD This invention relates to the loop control of a parallel AC-DC converter [Prior Art] The most commonly used prior art In order to avoid the parallel converter to generate a circulating current, the method of isolating the transformer with a line frequency of 60 Hz (or 50 Hz) is adopted, but the disadvantage is that the volume is large, the weight is heavy, and the space is occupied, and the current research status can be "ieee TRANSACTION ON" The papers of POWER ELECTRONICS, VOL· 17 NO 5 PP. 60+9415, SEPT· 2002” are generally known. The authors of the paper are international 'very famous scholars Dushan Boroyevich and Fred C. Lee, etc.

Virginia Tech電力電子研究中心的教授，雖然提出一改進二^ 法’但亦僅針對零序環流加以控制而已，雖然可有此 沾 效果，但由該文實驗波形，仍可明顯看出其g流波形^真情形 相當嚴重。其主要原因是三相轉換器系統本身即已相當複雜， 因此並聯多個系統其複雜度更高，非有深入研究則不易透徹了 解有關環流之相關複雜現象。因此本創作主要目的即在依據 ^所ίί之紐麟紐學鮮純彡村機擬，透徹了 方法。由本齡可了解顧不僅含有零序亦 ^欠佳’也充分說明了為何前述論文内容中實驗結果 【發明内容】 置，置2並聯it壓型交直流轉換器之協調控制裝 t if似士/Λ由多個並聯之三相交直流轉換器所組 成輸入側為:s:二相電源(2)，輸出The professor of the Virginia Tech Power Electronics Research Center, although proposing an improved two-method 'but only controls the zero-sequence circulation, although it can have this effect, the g-flow can still be clearly seen from the experimental waveform of this article. The waveform ^ true situation is quite serious. The main reason is that the three-phase converter system itself is quite complicated, so paralleling multiple systems is more complicated, and it is not easy to thoroughly understand the complicated phenomena related to the circulation without in-depth research. Therefore, the main purpose of this creation is to make a thorough understanding of the method based on the nucleus of New Zealand. It can be understood from the age that the Gu not only contains the zero sequence but also the poor quality. It also fully explains why the experimental results in the above papers [invention] set, set the parallel control of the parallel type AC-DC converter.输入 The input side composed of multiple parallel three-phase AC/DC converters is: s: two-phase power supply (2), output

1三相交直流轉換器搭配壹交直流控制器 4 、罝具有六開關之轉換模組(51，52,53)、壹輸入側三 相電感(41，42’43)、壹輸出侧穩壓電容(81 82 83)、壹流感測 ; ^4iLSii (12,13)則輸出六個半導體功率開關控制訊號來控制三相交 ίΐΐί模組(51，52,53)，以達到單一三相交直流轉換器輸入 侧電流單位_，輸_電壓無驗。另外輸人侧之三相電流 (4’ 〇可由電流感測器(61，62,63)量測之；輸出側電壓(〆） 可由電壓感測器(71，72,73)量測獲得。並聯三相升壓型交直流 =器之正序絲電騎令以第η台的正序直轴電流命令為 參考基準，其餘(Π4)台皆共用同一電流命令，各並聯交直流控 制器(11，12，13)的内部功能方塊則包含壹習用單獨運轉Ac/c^ 電壓控制器(121)、壹習用脈寬調變模組(122)及壹電流協調控 制器(123)。其巾㈣單獨運轉AC/DC控制器係將電壓命令(f) 與輸出電壓(匕)量側值兩個輸入訊號經計算後得到所需之丄 序直軸(匕咖）電流命令，並輸出至電流協調控制器(123)。而誃 電流協調控制器.(123)的輸出端則為三相交直流轉換器的珏^ Μ目控制訊號(<，v;，<)，此控制訊號則輸出至習用脈寬；; 模組(122)，以供三相交直流轉換器之閘極控制訊號。" 為解決環流的問題，首先參考如後面所示之第一圖盘 圖，定義並聯系統中第j台三相交直流轉換器第让相;忠: (V C々·由η個C咖的環流成份所構成 =C々.i + c々2 +. ‘ ‘+。如 Ο) =Σ^>» ~ ^km n ke{a, b, c}, 2, ···, n} 1338997 2〇11年1月ί)日修正替換頁 其中k是第j台三相交直流轉換器第k相的線電流 %為獲得環流的模型，吾人採用狀態空間平均的技術，首先 假設開關元件j理想，並將輸人侧電㈣等效串魏阻考慮進 去’使用克®荷夫電壓定律於並聯三相交直流轉換器的a相 上’可獲得如下方程式：1 three-phase AC-DC converter with 壹 AC/DC controller 4, 转换 six-switch conversion module (51, 52, 53), 壹 input side three-phase inductor (41, 42'43), 壹 output side regulator capacitor (81 82 83), 壹 flu test; ^4iLSii (12, 13) outputs six semiconductor power switch control signals to control the three-phase 模组 模组 module (51, 52, 53) to achieve a single three-phase AC-DC converter Input side current unit _, input _ voltage is not tested. In addition, the three-phase current on the input side (4' 量 can be measured by the current sensor (61, 62, 63); the output side voltage (〆) can be measured by the voltage sensor (71, 72, 73). The parallel sequence of the three-phase step-up AC/DC converter is based on the positive sequence direct current command of the nth stage, and the remaining (Π4) units share the same current command, and each parallel AC/DC controller ( The internal function blocks of 11, 12, 13) include the self-operated Ac/c^ voltage controller (121), the conventional pulse width modulation module (122), and the 壹 current coordination controller (123). (4) The AC/DC controller is operated separately. The two input signals of the voltage command (f) and the output voltage (匕) value are calculated to obtain the desired direct-axis (匕) current command, and output to the current. The controller (123) is coordinated, and the output of the current coordination controller (123) is a control signal (<, v;, <) of the three-phase AC-DC converter, and the control signal is output. To the conventional pulse width;; module (122) for the gate control signal of the three-phase AC-DC converter. " To solve the circulation problem, first refer to the following The first map shown, defines the jth phase of the three-phase AC-DC converter in the parallel system; Zhong: (VC々· consists of the circulating components of n C coffee = C々.i + c々2 +. ' '+.如Ο) =Σ^>» ~ ^km n ke{a, b, c}, 2, ···, n} 1338997 2〇11年月ί) k is the model of the k-th phase of the kth phase of the jth three-phase AC-DC converter. To obtain the circulation model, we use the state space averaging technique. First, we assume that the switching element j is ideal and the input side is electrically (four) equivalent. Considering the use of 'Kröller's voltage law on the a-phase of a parallel three-phase AC-DC converter', the following equation can be obtained:

+ ^1) * ial = ee - dnv〇 - vN〇 (pL2+Rs2)*ia2=ea~dnvo-vNO (2) ipLn+Rsn)^ian^ea-duv0+ ^1) * ial = ee - dnv〇 - vN〇 (pL2+Rs2)*ia2=ea~dnvo-vNO (2) ipLn+Rsn)^ian^ea-duv0

•VNO ς中A和及#為第j台三相交直流轉換器輸入側之每相電感及 其等效串聯f阻D並職統第n台三相交直流轉換器—相的線電流’ \·是第j台三相交直流轉換器第q個開關之責任週期函數，y€{1，2, ...，”}分別表示並聯祕第___台至第n’分€{1，2，…，6}分別表示三相六開關交汪、1)、(；相與下半臂&、1)、〇相之開關， 〇為輸出侧直流負載接地點與輸入侧三相 0)’吾人可獲得並聯系統中對應於a相的 矩陣所示 a 口三相交直流轉換器 直流轉換器之上半臂 P是微分運算子，^ 電源中性點的電位差 從數學式⑴和(2 環流方程式，如下的 - r C〇i Co2 —1 n ~(«-1) 1 了 ζ . i令.. « « < 丄 1 2, Γ ... -ιζ"-ζ" (Μ 「(《-D+zl.…+Z1] z· ^ ^ 1 y—w + — Zl Z2 Zn n • I · • « · zi+d+...+(«-i) U”v。— Zl Z2 Z u * n (e«~VN〇) (3) 其中4定義為bP + 心，同理吾人可獲得b相與c相的環流方 7 1338997 1A 11 20 曰修正替換頁 式 程 cin. 1 =— n cci Cc2 -Cc„ 1 =― n L· \>^ Z1 1 - z— --Z2 --Z1 1:-(: z'l j Nf :· 1 lzl• VNO ς中 A and # are the inductance of each phase of the input side of the jth three-phase AC-DC converter and its equivalent series f resistance D and the nth three-phase AC-DC converter of the phase-phase line current ' \· It is the duty cycle function of the qth switch of the jth three-phase AC-DC converter, y€{1,2, ...,"} respectively indicates the parallel secret ___ to the n' points €{1,2 ,...,6} respectively indicate the three-phase six-switch switch, 1), (; phase and lower arm &, 1), the phase switch, 〇 the output side DC load ground point and the input side three phase 0) 'We can obtain the matrix corresponding to phase a in the parallel system. The a-port three-phase AC-DC converter DC converter is the differential operator. The potential difference of the neutral point of the power supply is from the mathematical equations (1) and (2) The equation, as follows - r C〇i Co2 —1 n ~(«-1) 1 ζ . i令.. « « < 丄1 2, Γ ... -ιζ"-ζ" (Μ "(" -D+zl....+Z1] z· ^ ^ 1 y—w + — Zl Z2 Zn n • I · • « · zi+d+...+(«-i) U”v.— Zl Z2 Z u * n (e«~VN〇) (3) where 4 is defined as bP + heart, and the same person can obtain b phase and c Phase circulation side 7 1338997 1A 11 20 曰Revised replacement page formula cin. 1 =- n cci Cc2 -Cc„ 1 =― n L· \>^ Z1 1 - z— --Z2 --Z1 1:- (: z'l j Nf :· 1 lzl

nT Γίίί(»- z ^v 7 (fi. vo ^ V。 22 + n 7 nnT Γ ί ί n (»- z ^ v 7 (fi. vo ^ V. 22 + n 7 n

Tflz” …如lz" sT …-1Z2 ve + c Z1 dz.— …-1Z1 -13 (n Z2… -11Z2 I (w 7z!:-lzlTflz" ...such as lz" sT ...-1Z2 ve + c Z1 dz.— ...-1Z1 -13 (n Z2... -11Z2 I (w 7z!:-lzl

-1K-1) I - (M dzi-1K-1) I - (M dzi

-1F”-1IZ” ；-!) ++n • /IV (e"w) (4) z -1IZ" TIZ;".. (ed〇) (5) 由方程式(3)至(5)，吾人可獲得並聯系統第η台三相交真 流轉換器的環流模型如下： •Cm 'dn 心…α; 1/Z, 1 1/Z2 Cb„ JL -- n ^21 ··· d2n _Cc”_ Λ丨 -{n-\)!Zn νΛ ⑹ + -K-VW eb~vNO ec-vjr+ + + ^ zi Z2 Z· 為獲得適用的協調控制，吾人視環流為各頻譜的組成並考 慮穩態的情況，將(6)式轉換成正序、負序、零序的成分，其 轉換矩陣如下： 、 • 一-1F"-1IZ" ;-!) ++n • /IV (e"w) (4) z -1IZ"TIZ;".. (ed〇) (5) From equations (3) to (5) The circulation model of the n-th three-phase AC flow converter of the parallel system can be obtained as follows: • Cm 'dn heart...α; 1/Z, 1 1/Z2 Cb„ JL -- n ^21 ··· d2n _Cc” _ Λ丨-{n-\)!Zn νΛ (6) + -K-VW eb~vNO ec-vjr+ + + zi Z2 Z· In order to obtain the applicable coordinated control, we regard the circulation as the composition of each spectrum and consider the steady state. In the case of (6), the transformation matrix is converted into a positive sequence, a negative sequence, and a zero sequence. The transformation matrix is as follows:

ZnZn

CC

PnPn

CC

Nn . e 1 jlni3 e -jinn e^J2;r/3 eJ2n/3 • —* c bn c ⑺ 1338997 -—— 2011年1月^日修正替換頁 其中QL分別代表第η台三相交直流轉換器零序、 正序、負序環流相量，並由⑹式和⑺式可推得 -f 1 ^Z\ ^Z2 ^Zn _ 1/Z, _ 1/Z2 cpn Dpx DP2 ··· DPn _pNn ^ f t· DNl Dn1 ··· DNn ν〇 +， 3η 一 1 一 1 /7 — 1 (—+ — + ·.· +-) Z, Z2 z„ ⑻ a A* = A*+ A*+A* A^A*+A，/3+A，3Nn . e 1 jlni3 e -jinn e^J2;r/3 eJ2n/3 • —* c bn c (7) 1338997 --—— January 2011 ^ Correction replacement page where QL represents the nth three-phase AC/DC converter Zero-sequence, positive-sequence, negative-sequence circulation phasors, and can be derived from equations (6) and (7) -f 1 ^Z\ ^Z2 ^Zn _ 1/Z, _ 1/Z2 cpn Dpx DP2 ··· DPn _pNn ^ Ft· DNl Dn1 ··· DNn ν〇+, 3η一一一一 1 /7 — 1 (—+ — + ·.· +-) Z, Z2 z„ (8) a A* = A*+ A*+A* A^A*+A, /3+A, 3

Xz^(Ea + Eb+Ec-3VNO) Xp=Ea+EbeJ2,r,3+Ece-J2,rnXz^(Ea + Eb+Ec-3VNO) Xp=Ea+EbeJ2,r,3+Ece-J2,rn

Dm = Dn + + Dne> 2W3 XN = Ea + Ebe -jinDm = Dn + + Dne> 2W3 XN = Ea + Ebe -jin

EeJ 2W3 众=1，2, 3，···，《 其中良、良、乂是第k台三相交直流轉換器對應於零序、 正序、負序的責任週期相量。良、尾、尾、匕0是對應於A、 4、纥和νΛϋ的相量。當然，對應於其他些譜波成份而言，我J、 尾、戽應為零值。 考慮第(8)式，並收集所有並聯之三相交直流轉換器的零 序環流成份，可得如下數學表示式： - C21 1 5=-— 3/2 A、 (n -ΝΓΙ/ΝΓ …1/ΝΓ “ t2 …1/22 ζ-ΝΓ M ;z " k. l. 2011年1月^日修正替換頁 +Hil +-.+^1 Z2 z” Xz .*Ί /7-1 + — + 22 • ·. -f- _ z„ (9) 巧·零序環流成份’吾人令零序環流成份為零 ^21 =C22 = ^ =〇由(9)和⑽式’吾人侧_零序責細期相量解 (10) '4,1 _ 1 Z； ^22 r~~ 1 z2 • * V • 〇 ' L^. 1 Λ. Xz- Dzv〇. Z”v0 ' (11) (12) (13)EeJ 2W3 众=1,2, 3,···, "Where is good, good, and 乂 is the k-th phase three-phase AC-DC converter corresponding to the duty cycle phasor of zero sequence, positive sequence, and negative sequence. Good, tail, tail, and 匕0 are phasors corresponding to A, 4, 纥, and νΛϋ. Of course, corresponding to other spectral components, my J, tail, and 戽 should be zero. Considering equation (8) and collecting the zero-sequence loop components of all three-phase AC-DC converters connected in parallel, the following mathematical expression can be obtained: - C21 1 5=-- 3/2 A, (n -ΝΓΙ/ΝΓ ...1 /ΝΓ “ t2 ... 1/22 ζ-ΝΓ M ;z " kl January 2011 ^ Correction replacement page + Hil +-.+^1 Z2 z” Xz .*Ί /7-1 + — + 22 • ·. -f- _ z„ (9) Qiao·Zero-sequence loop component 'We make the zero-sequence loop component zero ^ 21 = C22 = ^ = 〇 by (9) and (10) formula 'My side _ zero order responsibility period Phasor solution (10) '4,1 _ 1 Z; ^22 r~~ 1 z2 • * V • 〇' L^. 1 Λ. Xz- Dzv〇. Z”v0 ' (11) (12) (13 )

Xz-Dzv0^Ea + Eb+Ec-3VN0~ hvXz-Dzv0^Ea + Eb+Ec-3VN0~ hv

Ai = ^Zi = · · * = DZn = Dz 值得注意的是(12)式·的物理意義，也就是零線路壓降，意 味著Ai = ^Zi = · · * = DZn = Dz It is worth noting that the physical meaning of (12) is the zero line voltage drop, which means

/Ζι=/Ζ2=... = /Ζη=〇 (14) 2, 3，，W ’是第k台三相交直流轉換器的零序 電机相量。若考慮所有鮮成份，吾人可得辦域的表示式 (15) η ^ + ht + ick = 〇, A： = 1, 2, · ㈣、^丨^ 三相交直流轉換器為達成零序環流，吾人 制Γ —二相交直轉換1讀電鮮序成份為零即 可。因此’零序環流的控制可藉由簡易之電流回授控制來達成。 =同的，吾人可令所有並聯之三相交直流轉換器的負序環 流為零，可求得如下之貞序責任軸相量乃 N\ D, N2 A, X、 ^n~Dn Zy_ (16)/Ζι=/Ζ2=... = /Ζη=〇 (14) 2, 3,, W ' is the zero sequence motor phasor of the kth three-phase AC/DC converter. If we consider all the fresh ingredients, we can get the expression of the domain (15) η ^ + ht + ick = 〇, A: = 1, 2, · (4), ^ 丨 ^ Three-phase AC-DC converter to achieve zero-sequence circulation, Our system - two-phase cross-conversion 1 read electric fresh-keeping component is zero. Therefore, the control of the zero-sequence loop can be achieved by simple current feedback control. = the same, we can make the negative sequence current of all parallel three-phase AC-DC converters to zero, can find the following order responsibility axis phasor is N \ D, N2 A, X, ^n~Dn Zy_ (16 )

Z (Π) - DNV0 = S0 + Ebe-細 + Ec严—δΝν 此結果即為Z (Π) - DNV0 = S0 + Ebe-fine + Ec strict - δΝν This result is

^i=A 们=*·，= (18)^i=A **=*·,= (18)

Ain = A ^ ^ t ^ 序環流就變得更加容^。、 目、直雜換ϋ要達成零負 正序f Ϊίί:序環、?的部分。依據之前的步驟，吾人可獲得 正序貝任週_，嘯财渐錢論之正序ϋ得 2011年1月W正替換頁Ain = A ^ ^ t ^ The sequence loop becomes more versatile. The order of the order, the part of the sequence, and the part of the sequence. According to the previous steps, we can get the positive sequence of Bei Ren Zhou _, the short-term order of Xiao Cai Qian Qian Qiang. January 2011 W positive replacement page

A· A>2 τ 1 xp 2,Ί Ζ2 A· _1_ 一· — V 0 人 Z xn (19) ^Pn = (Ea + Eheiln,^ + Ece~j2nl3)/vo ^P\ = ^P2 = ' * ·= (20) 如果(20)式為真，意味著ίαΐ、2 = ...乂 =〇A· A>2 τ 1 xp 2,Ί Ζ2 A· _1_一· — V 0 person Z xn (19) ^Pn = (Ea + Eheiln,^ + Ece~j2nl3)/vo ^P\ = ^P2 = ' * ·= (20) If (20) is true, it means ίαΐ, 2 = ...乂=〇

Τ 、/ζ 丨 1 'D^vjzA 1 『Άν 1/ζ2 42νσ/Ζ2 • [^Γ~]= 1 1/Ζ L. η _ Αν0/ζ”_ =[4UJ (21) i2’ 3，...，W，是第k台三相交直流轉換器的正序 ^ Γί從(21)式’吾人可得非無要解(⑽牆ial ^1〇1?么=‘=…=/&。從定義來看，正序直軸電流被指 ί為1電f (2i)式即表示⑽4(0=...'«。換句i 聯系統被控制在⑽=i』)=.·‘乂咖〇, 、ii序環流將不會出現。囉的，三相並聯祕另兩相電流可 ίΐ，_的情況’也就是說，所有三相交直流轉換器的正 斤d軸與q軸電流會相等。 =本創作發明之電流協調控制器，乃依據上述理論求得並聯 二相系統無環流條件下之零序解、負序解、正序解。並在該解 12 Ί338997Τ , /ζ 丨 1 'D^vjzA 1 『Άν 1/ζ2 42νσ/Ζ2 • [^Γ~]= 1 1/Ζ L. η _ Αν0/ζ”_ =[4UJ (21) i2' 3,. ..,W, is the positive sequence of the kth three-phase AC-DC converter ^ Γί from (21) type 'I can get nothing to do ((10) wall ial ^1〇1??='=...=/& By definition, the positive-sequence straight-axis current is referred to as 1 electric f (2i), which means (10) 4 (0=...'«. In other words, the system is controlled at (10)=i』)=.· '乂咖〇,, ii sequence circulation will not appear. 啰, three-phase parallel secret two-phase current can be ΐ, _ the situation ‘that is, all three-phase AC-DC converter jin d-axis and q-axis The current will be equal. = The current coordination controller of the present invention is based on the above theory to obtain the zero-sequence solution, the negative-sequence solution and the positive-sequence solution in the case of the parallel two-phase system without circulation. And in the solution 12 Ί 338997

t ^件一谷易實現之較佳解。為 T 直流轉換器並聯的情来，t二万f說明考慮兩台二相乂 擬圖Λ 電流_控制^前之輸人側線電流模 =相交Λϋ相交直流轉換器之線電與第二 /不等於· jn線電流U，（2皆有失真之現象，且 ‘。第四u為可nn目交直流轉換器過載的情 c c為對應第—台三相交直流轉換器穩態環流 乂 ％，G棋擬圖。此外，第一台三相 =22ίΐΐ擬圖如第五圖所示。接下來考慮並聯系2 雛彻後之結果。第六騎示為並聯系 圖中可知f電麵雛制11後之輸人鱗f流麵圖，由 台三相交直流轉換器與第二台三相交直流轉換 ^ίίϊ^ϊ乎重疊。第七圖和第人贿示為對應之第一台三 和序的電流成分，比較先前未加人本發明之 制器後確實大大的減少了環流的產生。接下二 二第九圖表示第—台三相交直流轉換 ίίϋ聯時，未加與已加本發明之電流協調控制器而量測得 &二古Ze2,，第十圖表示對應量測得之第一台三 流2Cai’2q,波形圖，第十一圖表示對應量 測得之第一 σ二相交直流轉換器零序環流3C^波形圖。 由以上模擬與實測結果可知，並聯系統力口入 後抑制了環流的產生，減少環流所造成的 同時提尚並聯系統之效能。 綜合以上所述，可知本創作發明具有下列優點： 1·本發明不僅可減少並聯系統之^^裒流產生而獲得均流效 ^，亦可降低並聯三相交直流轉換器輸入電流波形失 ^ ’減少環流所造成功率損失，同時提高並聯系統之效 能0 13 T558997 ----- 20】1年1月名曰修正替4頁 2.本發明之電流協調控制器，僅愛 4——·~-_ 流命令為基準做為聯繫之資巧 序、零序及其諧波所造成之環流成3達成減少正序、負 由上述二點顯示本創作確實能達到預期之目的及功效。 【實施方式】 並聯三相升壓型交直流轉換器之協 排與多個並聯之三相交直流轉換器組成Sdii: 入側三相辑輸出側直流^ 2運轉AC/DC電麗控制器產生一電流命令，此一電流命令 11台之正序直軸電流命令和電流感測器量得之三相電流 =-同輸入本發明之電流協調控制器，以獲得協雛之三相 二制訊號’此三相控制訊號輸入習用脈寬調變模組以驅動三相 父直流轉換器之六個開關閘極控制訊號。經由本發明之電流協 調控制器可以有效減少並聯系統之環流產生，減少環流所造成 的功率損失’同時提昇並聯系統之效能。 【圖式簡單說明】 圖·表示本並聯三相升壓型交直流轉換器之協調控制裝置 之系統方塊圖。 第二圖：表示第一圖中，第j部三相交直流轉換器功率電路架 構圖。 第二圖：表示第一台三相交直流轉換器與第二台三相交直流轉 換器並聯時，未加本發明電流協調控制器之穩態輸入 侧電流匕ΛΑ; UkL)模擬圖。 第四圖：表示第一台三相交直流轉換器與第二台三相交直流轉 換器並聯時，未加本發明電流協調控制器之第一台三 14 1338997 相交直流轉換器穩態環流c 第五圖：表示第-台三相交直流轉換器與第 時，未加本發明電流協調控;；=3巧 =直換器波形⑻零序環流(b)非零序“ 側電流^丨；i;2u模擬圖。 錢轉鋪料二自三被直流轉 時，加入本發明電流協調控制器之第一台三 第八圖換器穩態環流q仏，&模擬圖。 換器並聯相父直流轉換器與第二台三相交直流轉 :吳2聯時，加入本發明電流協調控制器之第一台主 2二直流轉換器波形⑻零序環流⑼非零序環流模 擬圖。 第九圖台二相交直流轉換器與第二台三相交直流轉 換器並聯時量測得之線電流心，&，I，L 未加本發明電流協調控_所制之波形圖。 mi)-加本發明電流協調控制器所量測之波形圖。 第十圖.第—台三被直_換與第二台三相交直流轉 並聯時量測得之環流2Cal，2心波形 $未加本發明電流協調控制器所量測之波形圖。 第十一圖 .2〇_入本發明電流協調控制器所量測之波形圖。 3.表不第f台三相交直流轉換器與第二台三相交直流 轉換器並聯時#測得之特職3C^波形 (a) 未加本發明電流協調控制器所量測之波形圖。 (b) 加入本發明電流協調控制器所量測之波形圖。： 15 1338997 2011年1月 4曰修正替換頁 【主要元件符號說明】 11,12,13交直流控制器 121 電壓控制器 122 脈寬調變模組 123 電流協調控制器 2 三相電源 3 直流負載 41，42,43輸入側三相電感(含線路阻抗) 51，52,53六開關之轉換模組 61，62,63電流感測器 71，72,73電壓感測器 81，82,83穩壓電容t ^ piece one valley easy to achieve the best solution. For the parallel connection of T DC converter, t 20,000 f indicates that two two-phase analog diagrams are considered. Current _ control ^ before the input side current mode = intersecting Λϋ phase-to-DC converter line and second / no Equal to jn line current U, (2 has distortion phenomenon, and '. The fourth u is the nn eye AC-DC converter overload cc is corresponding to the first-stage three-phase AC-DC converter steady-state circulation 乂%, G In addition, the first three-phase = 22 ΐΐ ΐΐ ΐΐ 如 如 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一After the input of the human scale f flow diagram, the three-phase AC-DC converter and the second three-phase AC-DC converter ^ ^ ^ ^ ^ ^ overlap. The seventh figure and the first person bribe as the corresponding first three and the order The current component is compared to the previously unapplied device of the present invention, which greatly reduces the generation of the circulation. The second and second ninth diagrams show the first three-phase AC-DC conversion, and the invention has not been added. The current coordination controller measures the & Ergu Ze2, and the tenth figure shows the first corresponding measurement. The three-stream 2Cai'2q, waveform diagram, and the eleventh figure show the corresponding σ two-phase AC-DC converter zero-sequence loop 3C^ waveform diagram. From the above simulation and actual measurement results, the parallel system force is suppressed after entering. The generation of the circulation reduces the efficiency of the parallel system and reduces the efficiency of the parallel system. As described above, it can be seen that the present invention has the following advantages: 1. The present invention can not only reduce the generation of the parallel system, but also achieve the uniform flow effect. ^, can also reduce the input current waveform of the parallel three-phase AC-DC converter loses the power loss caused by the reduction of the circulating current, and improve the performance of the parallel system. 0 13 T558997 ----- 20] January 1st name revised for 4 pages 2. The current coordination controller of the present invention only loves the 4——·~-_ flow command as the reference, and the circulation caused by the sequence, the zero sequence and the harmonics thereof is reduced to 3, which reduces the positive sequence and the negative cause. The above two points show that the creation can achieve the intended purpose and effect. [Embodiment] Parallel three-phase step-up AC-DC converter and a plurality of parallel three-phase AC-DC converters form Sdii: In-side three-phase series Output The side DC ^ 2 running AC / DC electric controller generates a current command, this current command 11 sets of positive sequence direct current command and the current sensor measured three-phase current = - same input current coordination control of the present invention The three-phase two-signal signal of the three-phase control signal input common pulse width modulation module to drive six switch gate control signals of the three-phase parent DC converter. The current coordinated control by the present invention The utility model can effectively reduce the circulation generation of the parallel system and reduce the power loss caused by the circulation flow, and simultaneously improve the performance of the parallel system. [Simplified description of the drawing] Fig. shows the coordinated control device of the parallel three-phase boost type AC-DC converter System block diagram. Second figure: shows the power circuit architecture of the jth three-phase AC/DC converter in the first figure. Second figure: When the first three-phase AC-DC converter is connected in parallel with the second three-phase AC-DC converter, the steady-state input side current 匕ΛΑ; UkL) simulation diagram of the current coordination controller of the present invention is not added. Figure 4: When the first three-phase AC-DC converter is connected in parallel with the second three-phase AC-DC converter, the first three 14 1338997 phase-to-earth converters with the current coordination controller of the present invention are not connected. Figure: shows the first three-phase AC-DC converter and the first time, without the current coordination control of the invention;; = 3 Q = converter waveform (8) zero-sequence loop (b) non-zero sequence "side current ^ 丨; i; 2u simulation diagram. When the money is transferred from the second to the third, the first three eighth-order converters of the current coordination controller of the present invention are added to the steady-state circulation q仏, & simulation diagram. The converter and the second three-phase AC-DC converter: Wu 2, when adding the first main 2 DC converter waveform of the current coordination controller of the invention (8) zero-sequence loop (9) non-zero-sequence loop simulation diagram. The line current core measured by the two-phase AC-DC converter in parallel with the second three-phase AC-DC converter, &, I, L is not added with the waveform diagram of the current coordination control of the present invention. mi)-plus invention The waveform diagram measured by the current coordination controller. The tenth figure. The third stage is directly _ exchanged with Two-phase three-phase AC-DC parallel-to-parallel measurement of the circulating current 2Cal, 2-core waveform $ without the waveform diagram measured by the current coordination controller of the present invention. Figure 11.2〇 into the current coordination controller of the present invention Waveform of measurement. 3. When the f-th phase three-phase AC-DC converter is connected in parallel with the second three-phase AC-DC converter, the measured special 3C^ waveform (a) is not added to the current coordination controller of the present invention. Waveform of measurement (b) Adding the waveform diagram measured by the current coordination controller of the present invention: 15 1338997 January 4, 2011 Correction replacement page [Key component symbol description] 11, 12, 13 AC/DC controller 121 voltage controller 122 pulse width modulation module 123 current coordination controller 2 three-phase power supply 3 DC load 41, 42, 43 input side three-phase inductance (including line impedance) 51, 52, 53 six-switch conversion module 61 , 62, 63 current sensor 71, 72, 73 voltage sensor 81, 82, 83 voltage stabilizing capacitor

Claims (1)

13389971338997 申請專利範®: .一種應用於並聯相同容量三相升壓型交直流轉換器之協 調控制裝置，1協調控制裝置係由複數個三相交直流轉換 器並聯構成:每一三相交直流轉換器包含一交直流控制 器、一電流感測器與一電壓感測器，其特徵在於： 每台交直流控制器由-電壓控制器、—脈寬調變模組及一 電流協雛,所組成，而任選—台三相交直流轉換器之 換器之參考協調訊 ^ 爪，奐态之電壓控制器輸出訊號與 電流感測器訊，-同輸入電流協調控制器以得出每一三 相交直流轉換ϋ之控制訊號’作為 訊 調變訊號則施- 各三相交直流轉換器之環流而達到聯運轉 17Patent Application: A coordinated control device for parallel connection of three-phase boost AC/DC converters of the same capacity. The coordinated control device consists of a plurality of three-phase AC-DC converters connected in parallel: each three-phase AC-DC converter includes An AC-DC controller, a current sensor and a voltage sensor are characterized in that: each AC-DC controller is composed of a voltage controller, a pulse width modulation module and a current coordinator. And optional - the three-phase AC-DC converter converter reference coordination signal, the state of the voltage controller output signal and current sensor information, - the same input current coordination controller to obtain each three-phase AC and DC The control signal of the conversion ' is used as the signal of the signal change - the circulation of each three-phase AC-DC converter reaches the joint operation 17