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微型光伏并网逆变器(包含原理图、PCB与DSP源代码)
微型光伏并网逆变器.rar
内容介绍
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/624f44e26caf596192c96e2d/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f44e26caf596192c96e2d/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">&#61667;<span class="ff2 ls1 ws1"> 2010 Microchip Technology Inc.<span class="_ _0"> </span><span class="ls2 ws2">DS01338A-page 1</span></span></div><div class="t m0 x1 h3 y2 ff3 fs1 fc0 sc0 ls3 ws0">INTRODUCTION</div><div class="t m0 x1 h4 y3 ff2 fs2 fc0 sc0 ls4 ws3">As the worl<span class="_ _1"></span>d is more and mo<span class="_ _1"></span>re concerned<span class="_ _1"></span> with fossi<span class="_ _1"></span>l</div><div class="t m0 x1 h4 y4 ff2 fs2 fc0 sc0 ls5 ws4">fuel ex<span class="_ _1"></span>haust<span class="_ _1"></span>ion an<span class="_ _1"></span>d env<span class="_ _1"></span>ironme<span class="_ _1"></span>nta<span class="_ _1"></span>l probl<span class="_ _1"></span>ems <span class="_ _1"></span>cause<span class="_ _1"></span>d</div><div class="t m0 x1 h4 y5 ff2 fs2 fc0 sc0 ls6 ws5">by c<span class="_ _1"></span>onvention<span class="_ _1"></span>al p<span class="_ _1"></span>ower<span class="_ _1"></span> gen<span class="_ _1"></span>eration, <span class="_ _1"></span>renew<span class="_ _1"></span>able</div><div class="t m0 x1 h4 y6 ff2 fs2 fc0 sc0 ls7 ws6">resourc<span class="_ _1"></span>es are b<span class="_ _1"></span>ecom<span class="_ _1"></span>ing a f<span class="_ _1"></span>ocal poin<span class="_ _1"></span>t of<span class="_ _1"></span> the enviro<span class="_ _1"></span>n-</div><div class="t m0 x1 h4 y7 ff2 fs2 fc0 sc0 ls5 ws7">ment<span class="_ _1"></span>al mo<span class="_ _1"></span>veme<span class="_ _1"></span>nt, bot<span class="_ _1"></span>h poli<span class="_ _1"></span>tical<span class="_ _1"></span>ly an<span class="_ _1"></span>d eco<span class="_ _1"></span>nomical<span class="_ _1"></span>ly<span class="_ _2"></span>.</div><div class="t m0 x1 h4 y8 ff2 fs2 fc0 sc0 ls8 ws8">Such renew<span class="_ _1"></span>able<span class="_ _1"></span> resources in<span class="_ _1"></span>clude<span class="_ _1"></span>s photo<span class="_ _1"></span>volt<span class="_ _1"></span>aic (PV)</div><div class="t m0 x1 h4 y9 ff2 fs2 fc0 sc0 ls9 ws9">and wi<span class="_ _1"></span>nd gen<span class="_ _1"></span>eration<span class="_ _1"></span> system<span class="_ _1"></span>s. </div><div class="t m0 x1 h4 ya ff2 fs2 fc0 sc0 lsa wsa">Using<span class="_ _1"></span> renewabl<span class="_ _1"></span>e resou<span class="_ _1"></span>rces on<span class="_ _1"></span> a large s<span class="_ _1"></span>cale is a<span class="_ _1"></span> cost</div><div class="t m0 x1 h4 yb ff2 fs2 fc0 sc0 lsb wsb">probl<span class="_ _1"></span>em a<span class="_ _1"></span>nd i<span class="_ _1"></span>n mo<span class="_ _1"></span>st c<span class="_ _1"></span>ases,<span class="_ _1"></span> more <span class="_ _1"></span>resea<span class="_ _1"></span>rch<span class="_ _1"></span> is ne<span class="_ _1"></span>eded</div><div class="t m0 x1 h4 yc ff2 fs2 fc0 sc0 ls9 wsc">to make<span class="_ _1"></span> their us<span class="_ _1"></span>e cost<span class="_ _1"></span>-eff<span class="_ _1"></span>ectiv<span class="_ _1"></span>e. PV syst<span class="_ _1"></span>ems, als<span class="_ _1"></span>o</div><div class="t m0 x1 h4 yd ff2 fs2 fc0 sc0 lsc wsd">termed s<span class="_ _1"></span>olar mi<span class="_ _1"></span>croinvert<span class="_ _1"></span>ers, hav<span class="_ _1"></span>e gained<span class="_ _1"></span> greater v<span class="_ _1"></span>isi-</div><div class="t m0 x1 h4 ye ff2 fs2 fc0 sc0 lsd wse">bility du<span class="_ _1"></span>ring the p<span class="_ _1"></span>ast<span class="_ _1"></span> severa<span class="_ _1"></span>l years as<span class="_ _1"></span> a conve<span class="_ _1"></span>nient an<span class="_ _1"></span>d</div><div class="t m0 x1 h4 yf ff2 fs2 fc0 sc0 lse wsf">promis<span class="_ _1"></span>ing ren<span class="_ _1"></span>ewable <span class="_ _1"></span>energy<span class="_ _1"></span> source.<span class="_ _1"></span> These<span class="_ _1"></span> energ<span class="_ _1"></span>y</div><div class="t m0 x1 h4 y10 ff2 fs2 fc0 sc0 lsf ws10">syste<span class="_ _3"></span>ms hav<span class="_ _3"></span>e se<span class="_ _3"></span>veral a<span class="_ _3"></span>dvanta<span class="_ _3"></span>ges co<span class="_ _3"></span>mpared<span class="_ _3"></span> to ot<span class="_ _3"></span>her</div><div class="t m0 x1 h4 y11 ff2 fs2 fc0 sc0 ls10 ws11">form<span class="_ _3"></span>s of re<span class="_ _3"></span>newabl<span class="_ _3"></span>e pow<span class="_ _3"></span>er<span class="_ _1"></span>, such as w<span class="_ _3"></span>ind en<span class="_ _3"></span>ergy<span class="_ _1"></span>. </div><div class="t m0 x1 h4 y12 ff2 fs2 fc0 sc0 lse ws12">The main draw<span class="_ _1"></span>backs<span class="_ _1"></span> of PV energy are the hig<span class="_ _1"></span>h cost of</div><div class="t m0 x1 h4 y13 ff2 fs2 fc0 sc0 ls7 ws13">manufac<span class="_ _1"></span>turing<span class="_ _1"></span> sili<span class="_ _1"></span>con s<span class="_ _1"></span>olar p<span class="_ _1"></span>anels<span class="_ _1"></span> and th<span class="_ _1"></span>e low</div><div class="t m0 x1 h4 y14 ff2 fs2 fc0 sc0 lse ws14">convers<span class="_ _1"></span>ion ef<span class="_ _1"></span>ficie<span class="_ _1"></span>ncy<span class="_ _2"></span>. With the n<span class="_ _1"></span>ewer techn<span class="_ _1"></span>iques<span class="_ _1"></span> of</div><div class="t m0 x1 h4 y15 ff2 fs2 fc0 sc0 lsa ws15">manufac<span class="_ _1"></span>turing<span class="_ _1"></span> crys<span class="_ _1"></span>tal<span class="_ _1"></span>line p<span class="_ _1"></span>an<span class="_ _1"></span>els a<span class="_ _1"></span>nd ef<span class="_ _1"></span>fic<span class="_ _1"></span>ient po<span class="_ _1"></span>wer</div><div class="t m0 x1 h4 y16 ff2 fs2 fc0 sc0 lsc ws16">convert<span class="_ _1"></span>er design<span class="_ _1"></span>, it is<span class="_ _1"></span> poss<span class="_ _1"></span>ible to m<span class="_ _1"></span>ake a <span class="_ _1"></span>PV project</div><div class="t m0 x1 h4 y17 ff2 fs2 fc0 sc0 ls11 ws0">cost-e<span class="_ _3"></span>ffective<span class="_ _3"></span>.</div><div class="t m0 x1 h4 y18 ff2 fs2 fc0 sc0 ls7 ws17">The co<span class="_ _1"></span>nver<span class="_ _1"></span>sion of<span class="_ _1"></span> the o<span class="_ _1"></span>utput <span class="_ _1"></span>volt<span class="_ _1"></span>age <span class="_ _1"></span>from a<span class="_ _1"></span> sola<span class="_ _1"></span>r p<span class="_ _1"></span>anel</div><div class="t m0 x1 h4 y19 ff2 fs2 fc0 sc0 ls8 ws18">into usa<span class="_ _1"></span>ble DC o<span class="_ _1"></span>r AC volt<span class="_ _1"></span>age m<span class="_ _1"></span>ust be d<span class="_ _1"></span>one at it<span class="_ _1"></span>s</div><div class="t m0 x1 h4 y1a ff2 fs2 fc0 sc0 ls12 ws19">Maximum Po<span class="_ _1"></span>wer Point<span class="_ _1"></span>, or MPP<span class="_ _4"></span>. MPP i<span class="_ _1"></span>s the PV o<span class="_ _1"></span>utput</div><div class="t m0 x1 h4 y1b ff2 fs2 fc0 sc0 ls13 ws1a">volt<span class="_ _1"></span>age at w<span class="_ _1"></span>hich<span class="_ _1"></span> the PV mod<span class="_ _1"></span>ule de<span class="_ _1"></span>livers<span class="_ _1"></span> maxi<span class="_ _1"></span>mum</div><div class="t m0 x1 h4 y1c ff2 fs2 fc0 sc0 ls14 ws1b">energy t<span class="_ _1"></span>o load<span class="_ _1"></span>.</div><div class="t m0 x2 h3 y1d ff3 fs1 fc0 sc0 ls15 ws1c">SP<span class="_ _1"></span>ECIFICATIONS, DEMA<span class="_ _3"></span>NDS, AND </div><div class="t m0 x2 h3 y1e ff3 fs1 fc0 sc0 ls16 ws1d">ST<span class="_ _5"></span>ANDARDS OF A SOLAR-</div><div class="t m0 x2 h3 y1f ff3 fs1 fc0 sc0 ls17 ws1e">POWE<span class="_ _1"></span>RED SY<span class="_ _1"></span>STEM</div><div class="t m0 x2 h4 y20 ff2 fs2 fc0 sc0 ls18 ws1f">Inte<span class="_ _3"></span>rfac<span class="_ _3"></span>ing a s<span class="_ _3"></span>olar<span class="_ _3"></span> microi<span class="_ _3"></span>nvert<span class="_ _3"></span>er mo<span class="_ _3"></span>dule w<span class="_ _3"></span>ith t<span class="_ _3"></span>he powe<span class="_ _3"></span>r</div><div class="t m0 x2 h4 y21 ff2 fs2 fc0 sc0 ls6 ws20">grid i<span class="_ _1"></span>nvolves<span class="_ _1"></span> two majo<span class="_ _1"></span>r task<span class="_ _5"></span>s. One is to ensu<span class="_ _1"></span>re that the</div><div class="t m0 x2 h4 y22 ff2 fs2 fc0 sc0 ls19 ws21">solar mi<span class="_ _5"></span>croinverter mod<span class="_ _5"></span>ule is operate<span class="_ _1"></span>d at the<span class="_ _1"></span> Maximum</div><div class="t m0 x2 h4 y23 ff2 fs2 fc0 sc0 lsc ws22">Power P<span class="_ _5"></span>oint (MPP). The <span class="_ _5"></span>second is to<span class="_ _1"></span> inject<span class="_ _5"></span> a sinuso<span class="_ _1"></span>idal</div><div class="t m0 x2 h4 y24 ff2 fs2 fc0 sc0 ls1a ws23">current into<span class="_ _5"></span> <span class="_ _3"></span>the grid. Sinc<span class="_ _1"></span>e the inverte<span class="_ _5"></span>r <span class="_ _3"></span>is conne<span class="_ _5"></span>c<span class="_ _3"></span>ted to</div><div class="t m0 x2 h4 y25 ff2 fs2 fc0 sc0 ls1b ws24">the grid, th<span class="_ _5"></span>e standard<span class="_ _1"></span>s given by<span class="_ _5"></span> the utility com<span class="_ _5"></span>panies</div><div class="t m0 x2 h4 y26 ff2 fs2 fc0 sc0 ls1c ws25">must b<span class="_ _1"></span>e obeyed<span class="_ _5"></span>. The EN61000-3<span class="_ _1"></span>-2, IEEE154<span class="_ _5"></span>7 stan-</div><div class="t m0 x2 h4 y27 ff2 fs2 fc0 sc0 ls1c ws26">dards, an<span class="_ _5"></span>d the U.S. National<span class="_ _5"></span> Electrical Code<span class="ff4 ls0 ws0"> <span class="_ _6"> </span><span class="ff2 ls1d">(NEC)</span></span></div><div class="t m0 x2 h4 y28 ff2 fs2 fc0 sc0 ls4 ws27">690, ar<span class="_ _1"></span>e worth consi<span class="_ _5"></span>dering. These st<span class="_ _5"></span>andards deal wi<span class="_ _1"></span>th</div><div class="t m0 x2 h4 y29 ff2 fs2 fc0 sc0 lsd ws28">issues<span class="_ _5"></span> like power qua<span class="_ _5"></span>lity<span class="_ _2"></span>, detection of<span class="_ _5"></span> islanding</div><div class="t m0 x2 h4 y2a ff2 fs2 fc0 sc0 ls1b ws29">operatio<span class="_ _5"></span>n, grounding, <span class="_ _5"></span>and so on.</div><div class="t m0 x2 h4 y2b ff2 fs2 fc0 sc0 ls9 ws2a">These in<span class="_ _5"></span>verters must be<span class="_ _5"></span> able to detect an is<span class="_ _5"></span>landing sit-</div><div class="t m0 x2 h4 y2c ff2 fs2 fc0 sc0 ls14 ws2b">uation, an<span class="_ _5"></span>d take appropria<span class="_ _5"></span>te action in order to pre<span class="_ _5"></span>vent</div><div class="t m0 x2 h4 y2d ff2 fs2 fc0 sc0 ls6 ws2c">bodily<span class="_ _5"></span> <span class="_ _3"></span>harm and<span class="_ _5"></span> <span class="_ _3"></span>damag<span class="_ _1"></span>e to equi<span class="_ _1"></span>pment con<span class="_ _5"></span>n<span class="_ _3"></span>ected<span class="_ _1"></span> to</div><div class="t m0 x2 h4 y2e ff2 fs2 fc0 sc0 ls6 ws2d">the grid. Is<span class="_ _5"></span>landing is the co<span class="_ _5"></span>ntinued operation<span class="_ _5"></span> of the</div><div class="t m0 x2 h4 y2f ff2 fs2 fc0 sc0 ls1b ws2e">inverter <span class="_ _5"></span>w<span class="_ _3"></span>hen<span class="_ _5"></span> the grid has bee<span class="_ _5"></span>n removed intent<span class="_ _5"></span>ionally<span class="_ _2"></span>,</div><div class="t m0 x2 h4 y30 ff2 fs2 fc0 sc0 ls1b ws2f">by ac<span class="_ _5"></span>cident, or by <span class="_ _5"></span>damage. In<span class="_ _5"></span> other words,<span class="_ _5"></span> if the gri<span class="_ _1"></span>d</div><div class="t m0 x2 h4 y31 ff2 fs2 fc0 sc0 lse ws30">has been<span class="_ _5"></span> removed from the i<span class="_ _5"></span>nverter; the in<span class="_ _1"></span>verter</div><div class="t m0 x2 h4 y32 ff2 fs2 fc0 sc0 ls19 ws31">should <span class="_ _5"></span>then stop at<span class="_ _1"></span>tempts<span class="_ _5"></span> to supply <span class="_ _1"></span>power to<span class="_ _5"></span> the grid</div><div class="t m0 x2 h4 y33 ff2 fs2 fc0 sc0 ls14 ws1b">or ene<span class="_ _1"></span>rgize the<span class="_ _5"></span> grid. </div><div class="t m0 x2 h4 y34 ff2 fs2 fc0 sc0 ls6 ws32">The mos<span class="_ _1"></span>t commo<span class="_ _5"></span>n solar technol<span class="_ _5"></span>ogies today a<span class="_ _1"></span>re the</div><div class="t m0 x2 h4 y35 ff2 fs2 fc0 sc0 lsd ws33">monocry<span class="_ _5"></span>stallin<span class="_ _1"></span>e and mul<span class="_ _5"></span>ticrysta<span class="_ _1"></span>lline <span class="_ _1"></span>silicon<span class="_ _5"></span> modules. A</div><div class="t m0 x2 h4 y36 ff2 fs2 fc0 sc0 lsc ws34">PV cell c<span class="_ _1"></span>an be mod<span class="_ _5"></span>eled as shown i<span class="_ _5"></span>n Figure<span class="_ _7"> </span>1, and it<span class="_ _5"></span>s</div><div class="t m0 x2 h4 y37 ff2 fs2 fc0 sc0 ls8 ws35">electric<span class="_ _5"></span>al <span class="_ _3"></span>cha<span class="_ _1"></span>racteris<span class="_ _1"></span>tics are sh<span class="_ _5"></span>own in Figure<span class="_ _7"> </span>2. The</div><div class="t m0 x2 h4 y38 ff2 fs2 fc0 sc0 ls1e ws36">MPP v<span class="_ _3"></span>oltage ra<span class="_ _3"></span>nge f<span class="_ _3"></span>or th<span class="_ _3"></span>ese PV mo<span class="_ _3"></span>dule<span class="_ _3"></span>s is nor<span class="_ _3"></span>mally</div><div class="t m0 x2 h4 y39 ff2 fs2 fc0 sc0 ls14 ws37">defined i<span class="_ _5"></span>n the range from 27<span class="_ _5"></span>V to 45V<span class="_ _2"></span>, at a pow<span class="_ _1"></span>er</div><div class="t m0 x2 h4 y3a ff2 fs2 fc0 sc0 ls8 ws38">generati<span class="_ _5"></span>on of approximate<span class="_ _5"></span> 200W<span class="_ _5"></span>, and their op<span class="_ _5"></span>en-circuit</div><div class="t m0 x2 h4 y3b ff2 fs2 fc0 sc0 ls8 ws29">volt<span class="_ _5"></span>age is below <span class="_ _5"></span>45V<span class="_ _2"></span>. </div><div class="t m0 x1 h5 y3c ff3 fs3 fc0 sc0 ls1f ws39">FIGURE 1:<span class="_ _8"> </span>SIMPLIFIED MODEL OF A PV CELL</div><div class="c x1 y3d w2 h6"><div class="t m0 x3 h7 y3e ff4 fs2 fc0 sc0 ls19 ws3a">Autho<span class="_ _1"></span>r:<span class="_ _9"> </span>Mohamm<span class="_ _5"></span>ad Kamil</div><div class="t m0 x4 h7 y3f ff4 fs2 fc0 sc0 ls9 ws9">Microc<span class="_ _5"></span>hip T<span class="_ _2"></span>echnolo<span class="_ _5"></span>gy Inc.</div></div><div class="c x1 y40 w3 h8"><div class="t m0 x5 h9 y41 ff5 fs2 fc0 sc0 ls0 ws0">R</div><div class="t m0 x6 ha y42 ff5 fs4 fc0 sc0 ls0 ws0">s</div><div class="t m0 x7 h9 y43 ff5 fs2 fc0 sc0 ls0 ws0">R</div><div class="t m0 x8 ha y44 ff5 fs4 fc0 sc0 ls0 ws0">p</div><div class="t m0 x9 h9 y45 ff5 fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 xa ha y46 ff5 fs4 fc0 sc0 ls0 ws0">o</div><div class="t m0 xb h9 y47 ff5 fs2 fc0 sc0 ls0 ws0">V</div><div class="t m0 xc ha y48 ff5 fs4 fc0 sc0 ls0 ws0">o</div><div class="t m0 xd h9 y49 ff5 fs2 fc0 sc0 ls0 ws0">V</div><div class="t m0 xe ha y4a ff5 fs4 fc0 sc0 ls0 ws0">o</div><div class="t m0 xf h4 y49 ff2 fs2 fc0 sc0 ls8 ws3b"> ~ 0.5 V<span class="_ _2"></span>olts</div><div class="t m0 xd h9 y4b ff5 fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 x10 ha y4c ff5 fs4 fc0 sc0 ls0 ws0">o</div><div class="t m0 x11 h4 y4b ff2 fs2 fc0 sc0 ls20 ws3c"> ~ 1 to 3 Am<span class="_ _5"></span>ps</div></div><div class="t m0 x12 hb y4d ff3 fs5 fc0 sc0 ls15 ws0">AN1338</div><div class="t m0 x13 hc y4e ff6 fs6 fc0 sc0 lse ws3d">Grid-Conne<span class="_ _5"></span>cted Solar Micr<span class="_ _5"></span>oinverter Re<span class="_ _1"></span>fer<span class="_ _5"></span>ence Design </div><div class="t m0 x14 hc y4f ff6 fs6 fc0 sc0 ls21 ws3e">Using a dsPIC</div><div class="t m0 x15 hd y50 ff6 fs7 fc0 sc0 ls0 ws0">&#174;</div><div class="t m0 x16 hc y4f ff6 fs6 fc0 sc0 ls22 ws3f"> Digital Signal Contr<span class="_ _5"></span>oller</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div> </body> </html>
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