太阳能光伏发电最大功率点间接跟踪算法研究_陈进美

28 1 2 0 10 M1 nullnull nullnull Snull Water Resources and Power Vol.28 No.1 Jan.2 0 1 0 cI| 1000-77092010 01-0148-04  ;™Kv qW6 E 陈进美1 null 陈 null 峦1, 2 1.v , Z 830008; 2.0 S/v1, 610054 K1 针对太阳能光伏发电最大功率传统跟踪算法的跟踪对象为光伏阵列的输出功率,通过改变跟踪对象, 提出了MPPT参数null跟踪与双电压跟踪法,分析了间接跟踪算法的原理特点和实现方案b在分析太阳能电 池等效电路模型的基础上,建立了太阳能电池阵列的数学模型,通过M PPT 仿真实验验证了此二种间接跟踪 算法可行有效,供借鉴b 1oM 光伏发电; 最大功率跟踪; 跟踪对象; 间接跟踪算法; 仿真 ms | TM 615DS ’ A l 2009-08-26, 2009-09-15 [ “v21 W[ “ XJU2008JGY21 T€e 1987-, 3, V 3,Z_ “d ,E-mailchenjinmei053 yahoo.com. cn null null  TB– s ,[  | ‚a‚a b ™a uK  ]71Š, ;š eE sT†1a*ž HWa  f ƒM•Y v;9 E —q  .  1 p , O“ dY‹ yŒ   e1 p,M‹ —qgbkN,Œ.dMPPT E ‚,YVM6,4 MPPT• ”null 6E 6E,s  E , iYV_‡ L  E[3]b 1null;™r ˜ ;™ ;™r‹,’;™ “†  H,  T/  3 ,r ˜ m1 Ubm,;™ rB Iphš Bž_ 5i ; Rs1 E; Rsh • s Eb m1 null  ;™r ˜ Fig.1 null Equivalent circuit model of solar cells m1 V p;™ {ŸZ[4] I Iph- I0 e q V IRs AkT - 1 - V IRsR sh 1 T, I { ; Iph;v 3 ; I0 Q „ ; q0€ ; V { ; A;™8 qP-N“ ”A 1.11 ; kj  ”; T, K; RsaRshrE, |Rsh 2 000 nullb  ;™” † ” ” ˜ I Isc 1- C1 e VC2Voc - 1 - 1 2  C1 1- Im / Isc e Vm C2 Voc C2 Vm / Voc - 1 ln1- Im/ Isc - 1 T, Isc  ; Voc 7 ; ImaVmsY Kv q ab 2null• ”null6E 9 E V,’  “dTK v q dP dV IdV dV I V dI dV 0 3 Rsh  kv, T1 V I Iph- I0 e qV IRs AkT - 1 4 yRs  ,, I / V |1 – ” V ln IV- qVAkT ln qI0AkT null 5 Hq/Kv qMPPnull V1 U[ 8]bV V A,’ vS M H, nullMS“l, V9  f ƒ/nullb  wL›,6null V pKv  qbŒNE V  p‚ž ’Kv q ,N|• ”null6E E9 E ›† VžrT XKv q,‹ E  m2 Ubm, c q/ A kT , nullg “ S; k] b1Dnull}“ ”bW E  { qP,null 9 eLb V1null f ƒ/MPPnull Tab.1 null nullof MPP Department under different cases v“ ”PNnull v“ ”PNnull 0. 3 30 - 17.0 0. 6 55 - 14. 7 0. 3 40 - 16.1 0. 9 30 - 16. 2 0. 3 55 - 14.9 0. 9 40 - 15. 7 0. 6 30 - 16.4 0. 9 55 - 14. 5 0. 6 40 - 15.8 3null 6E .dKv q6“| HB m2null• ”null6E E  Fig.2 null Process of parameter null tracing algorithmic B, ž TdB /,7 6 E „  { ,  E;™ {Ÿ wL, m3 U[9]b m3null 6E Uim Fig.3 null Schemat ic diagram of dual voltage-tracking B| qk,œ  v   {Ÿ V 2 k V1 I1 kI2 6 ž  {  { B k, v {‚hl, l‚ 9v,B„„/Kv q,V7 V p ’ Kv qb E  m4 Ub  6E B“zW6Kv q E,‚  “d *_ b null149null28 1 null null null null null null null   ;™Kv qW6 E m4 null 6E E  Fig.4 null Process of dual voltage tracking method 4null;™”  ˜ ;™ {Ÿ ;v ,, /r,. 16“d  9[ J] .   S, 2009,272 215-218. [3] null Mao Lin Chiang, Chih Chiang Hua, Jong Rong Lin. Direct Power Control for Distributed PV Power Sys- tem[ A]. Power Conversion Conference[ C]. Osaka, Japan,2002 311-315. [4] nullZ, d ,1.MATLAB/ Simulink ;™y _‡[ J] . ]›v/ Œ , 2006,21 4 74-77. m5null;™”  ˜ Fig.5 null PV array model null null null null nullm6null null6 f ƒnull null null null null null null null nullm7null 6E { q { Fig.6 null Tracking situation of paramet er nullnull Fig. 7null Out put power and current of dual voltage tracking method 下转第56页 null150null nullnull nullnull Snullnull null null null null null null null null null null null null null null null null 2010 M 4null a.l  bW  V L ‚ ” d9s  F,V qsƒ p  p S›9 , Vh  , ˜† L ƒb b.[ Cv ,9 TV ZE† V L, , Vkb • ID [ 1] nullf, .,R . V L ‚ ‹ [ J] .   S, 2008,262 85-87. [2] nully ,f,C.   F V L s[J].r,2008,30101 444-1 448. [3] null, , lk.  Fs[ J] . Š,2008, 3012 112-113. [4] nullk‹,  .   F V Ls[ J]. žv1 – S, 2001, 292 80-83. [5] null o, y, [,. 8“ V L 9 ZE[ J] . , 2009,272 1-3,6. [6] null b,. V LŸs KE[ M] . € ,2005. [7] nulluSG,Sš.l  bW  V L P sZE[ J] .r , 1996,294 47-51. Reliability Analysis of Stability against Sliding forLongtan Dam LI Dandan1 null LI Tongchun1 null XIAO Feng2 1. College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China; 2. Mid-South Design and Research Institute, CHECC, Changsha 410014, China Abstract According to the effect of layer of weaknesses of gravity dam on the structural safety of dam, taking the Longtan dam for an example, selecting nine layers of weakness, reliability of stable against sliding of layers are analyzed and the system reliability of later is calculated by using the stress result, which is calculated by the nonlinear FEM. The results showed that the proposed method is reasonable and reliable and can be used for reference. Key words gravity dam; layer of weakness; stability against sliding; finite element method; reliability 上接第150页 [ 5] null Tse K K, Billy M T Ho, Henry Shu-Hung Chung, et al. A Comparative Study of Maximum-Power- Point Tracker for Photovoltaic Panel Using Switching- Frequency Modulation Scheme[ J]. Transactions on In- dustrial Electronics, 2004, 512 410-418. [ 6] null Federico Scapino, Filippo Spertino. Circuit Simula- tion of Photovoltaic Systems for Optimum Interface between PV Generator and Grid[ A ]. IEEE 2002 28th Annual Conference [ C] . Sevilla, 2002 1 125- 1 129. [ 7] null Veerachary M, Senjyu R, Uezato K. Neura-l network- based Maximum-Power- Point Tracking of Coupled-in- ductor Interleaved-boost-converter-supplied PV Sys- tem Using Fuzzy Controller[ J] . Transactions on In- dustrial Electronics, 2003, 50 4 749-758. [8] null Park Joung-Hu, Jun-Youn Ahn, Bo-Hyung Cho, et al. Dua-l Module-Based Maximum Power Point Tracking Control of PhotovoltaicSystems[J] . IEEE Transactions on Industrial Electronics, 2006,534 1 036-1 047. [9] null Shmilovitz D. Photovoltaic Maximum Power Point Tracking Employing Load Parameters[ A ]. IEEE ISIE 2005[C]. Dubrovnik, Croatia,20051 037-1 042. Study on MaximumPowerPoint Indirect Tracking Algorithm of SolarPhotovoltaicPower CHEN Jinmei1 null CHEN Luan1, 2 1. Collegeof Electrical Engineering, Xinjiang University, U rumqi 830008, China; 2. College of Automation Engineering, U niversity of Electronic Science and Technology of China, Chengdu 610054, China Abstract The tracking object of the traditional M PPT in solar power is photovoltaicarrays output power. By chan- ging thetracking object, this paper proposes thenull-MPPT and dual voltagetracking method, analyzes the principlecharac- teristics of the indirect tracing algorithm, and then designs the algorithms implementation. Based on the analysis of thee- quivalent circuit model of the solar battery, themathematical model of the solar battery array is established and the effec- tiveness of these two algorithms are verified by the MPPT simulation experiment. Key words photovoltaic power; MPPT; tracking object; indirect tracing algorithm; simulation null56null nullnull nullnull Snullnull null null null null null null null null null null null null null null null null 2010 M