1 00:00:04,350 --> 00:00:11,950 Hi everyone welcome back to the solar energy course let's start today. 2 00:00:12,030 --> 00:00:26,220 Is forming and a by everyone so our pelts photo voltaic pairs can be wired or connected to gather in 3 00:00:26,230 --> 00:00:34,750 user series or about combination or pause to increase the voltage or the current capacity of the solar 4 00:00:34,750 --> 00:00:35,620 array. 5 00:00:35,990 --> 00:00:44,650 If there array Bell are connected to this are in serious combination zinn's a voltage increase and is 6 00:00:44,650 --> 00:00:46,920 connected to Giza in. 7 00:00:47,020 --> 00:00:57,400 Zen is a current increases Zay electric power in what generated boy these different photovoltaic combination. 8 00:00:57,520 --> 00:01:04,400 Will it still be the product of the voltage and the current be equal. 9 00:01:04,410 --> 00:01:09,980 The Times all but is a solar panel are connected together. 10 00:01:11,360 --> 00:01:22,710 The upper right hand corner will always be the maximum power point and short if they connected in parallel. 11 00:01:22,840 --> 00:01:31,650 The this point will be the maximum power point and if z connecting a series this will be the maximum 12 00:01:31,650 --> 00:01:32,460 power point. 13 00:01:37,560 --> 00:01:43,700 There are three types of power connection first period. 14 00:01:43,880 --> 00:01:48,050 Second Series serve the virus's connection. 15 00:01:48,580 --> 00:01:50,980 Let us start with very connection 16 00:01:53,940 --> 00:01:57,190 how to set up your system in power. 17 00:01:57,270 --> 00:02:05,490 That better connection is accomplished by joining Sam Foster off to balance together as well as the 18 00:02:05,490 --> 00:02:08,150 negative of each parent together. 19 00:02:08,340 --> 00:02:09,640 As shown in this figure. 20 00:02:09,920 --> 00:02:15,930 Suppose that of the first fellow connected to Z both of us the second panel and the negative of the 21 00:02:15,930 --> 00:02:21,050 second panel connected to Z negative of the first bundle. 22 00:02:21,070 --> 00:02:30,700 The main advantage of this connection is it helps control the voltage while generating assist them in 23 00:02:30,790 --> 00:02:33,840 this advantage of this connection. 24 00:02:33,910 --> 00:02:40,650 It can only be used with the same voltage when it can cause high current. 25 00:02:40,990 --> 00:02:51,690 If zero are too many connections this connection has many problems the main problem of this connection 26 00:02:51,720 --> 00:02:59,140 is high and bridge is difficult to travel long distance without using get very sick wire. 27 00:02:59,550 --> 00:03:09,250 So to reach you will increase as a voltage and both will decrease the solution of this problem is by 28 00:03:09,640 --> 00:03:19,920 connecting a series diode to each set to avoid reverse current if the voltage decrease in series the 29 00:03:19,920 --> 00:03:32,140 dial Reid that a very it is a faulty shape mean the light allows a tunnel to go in one direction and 30 00:03:32,140 --> 00:03:36,700 the other she delivers the current to the desire delude 31 00:03:39,670 --> 00:03:40,890 what an observer. 32 00:03:40,890 --> 00:03:49,140 This advantage of this solution is that the constant losses of the voltage as a value chain reduce the 33 00:03:49,200 --> 00:03:59,250 output voltage because all z then and zero is a better solution is the use of germanium diet instead 34 00:03:59,280 --> 00:04:03,800 of silicone diet to reduce the losses of the voltage 35 00:04:07,550 --> 00:04:14,370 another solution is to use the magnetic field sensitive to detect the reverse of Carol and activates 36 00:04:14,410 --> 00:04:24,600 the power separation switch this is started with the better way why did those identical operating solar 37 00:04:24,600 --> 00:04:29,390 burner in Basra when you can next solar battle in Perth. 38 00:04:29,430 --> 00:04:36,910 The total out of the voltage of solar array is the same as the voltage of the single bell or why is 39 00:04:36,910 --> 00:04:45,620 the total output current is a sum of the current pulsing zero each fellow Zellweger is the only invalid 40 00:04:45,870 --> 00:04:57,000 quiet Z is a banner connected are of the same type on the boundary if we had four panels of ratings 41 00:04:57,330 --> 00:05:06,900 one hundred and fifty two one and nineteen voltage and it and there means that total voltage would equal 42 00:05:06,930 --> 00:05:15,660 to nineteen voltage and has a daughter current with equal to number of Z solar billions times the current 43 00:05:15,660 --> 00:05:25,540 of each bell means four times eight will equal to thirty two and b Zen the total current opposite error 44 00:05:25,740 --> 00:05:30,370 array will equal to sixty two and beer. 45 00:05:30,370 --> 00:05:39,210 The total power would equal to the total voltage times the total current Will it work to 19 times 32 46 00:05:39,450 --> 00:05:41,980 will equal six or eight. 47 00:05:42,450 --> 00:05:49,440 While but a widening of the different grating solar panel in battle. 48 00:05:49,440 --> 00:05:55,840 Here is a parallel connection of solid opinion of different voltage rating and the same country. 49 00:05:57,860 --> 00:06:05,660 If we had three solar panel or freaking one hundred and fifty two watt and nineteen volts and it ambient 50 00:06:06,400 --> 00:06:14,520 and one solar panel what is one hundred and thirty six while 17 voltage and it ambient. 51 00:06:15,260 --> 00:06:22,820 We will find is that the total voltage of this error rate will equal to the lower voltage means with 52 00:06:22,850 --> 00:06:25,140 equal to 17 voltage. 53 00:06:25,210 --> 00:06:30,440 What is a thought that going to an equal to the number of Zeiss modules times. 54 00:06:30,440 --> 00:06:39,170 Is there anything current of each molding mean four times eight would equal to sixty two and MP talked 55 00:06:39,320 --> 00:06:44,020 about when it equal to is it to the voltage times the total current me 17. 56 00:06:44,050 --> 00:06:54,560 Both times 32 and there will equal to five hundred and forty four what as you can see things are getting 57 00:06:54,560 --> 00:07:01,730 worse since the total voltage of that array is that your mind buys a solar panel of the lowest politician 58 00:07:01,730 --> 00:07:02,400 rating. 59 00:07:02,440 --> 00:07:11,560 We received 11 per cent losses of installed solar power. 60 00:07:11,640 --> 00:07:13,460 Let's see the next exam. 61 00:07:13,620 --> 00:07:23,520 Let's see what happens when we break even more diversity and connect in Paris solar panel of different 62 00:07:23,520 --> 00:07:34,210 voltage and current readings let's say we had two solar panel of one hundred and fifty two was known 63 00:07:34,220 --> 00:07:43,500 to voltage and the eight m b and once all the building was 126 Walt and the 18 voltage and seven MP 64 00:07:44,460 --> 00:07:54,650 and one with eighty five watt and 17 voltage and the five and b you can realize that the total voltage 65 00:07:54,650 --> 00:08:02,240 would equal to the lowest voltage of those special means will equal to seventeen volts that the current 66 00:08:02,240 --> 00:08:10,820 will equal to some measure of all current mean five the last seven plus eight lost it will equal to 67 00:08:11,120 --> 00:08:18,480 twenty eight ambit now the total power will equal to the total voltage times the total current mean 68 00:08:18,490 --> 00:08:27,560 seventeen voltage times do any aid and there will equal to four hundred and seventy six what now zero 69 00:08:27,680 --> 00:08:32,600 is twenty two per cent of losses of any installed power 70 00:08:35,800 --> 00:08:43,840 now let's get to the serious foundation how to set up your system ensues. 71 00:08:43,850 --> 00:08:52,280 This is the mission is accomplished by joining the positive of one banner to the negative one mean. 72 00:08:52,800 --> 00:09:03,750 If we have three panels like this series the negative one is out as a positive one it's connected to 73 00:09:03,810 --> 00:09:07,980 the negative of the next one and the next one. 74 00:09:07,970 --> 00:09:17,790 The positive is connected to negative and the positive is going to out so serious is all serious condition. 75 00:09:17,800 --> 00:09:21,500 This array is called a serious condition. 76 00:09:21,520 --> 00:09:30,790 This is condition is connected with another sense connection in bad condition as you see bandwidth is 77 00:09:30,790 --> 00:09:32,730 a problem of serious condition. 78 00:09:33,630 --> 00:09:42,560 The problem of connecting solar panel is shielding which you make calls that shaded cell damage. 79 00:09:44,290 --> 00:09:52,570 In the case of Lucas shaving on their solar cell due to dust for example that presents of dust on a 80 00:09:52,570 --> 00:10:01,480 solar cell means that there is a shadow on that as lists read you active radiation. 81 00:10:01,570 --> 00:10:13,250 Although is observable fluke means fewer pairs of live electrons and games generate awareness of current 82 00:10:13,700 --> 00:10:18,640 of any cell is reduced by shaving at a verse simple dish. 83 00:10:18,750 --> 00:10:28,740 Okay is in the cell as is voltage may damage the cell the solution of Z shaving problem solving the 84 00:10:28,740 --> 00:10:37,260 problem of connecting the solar panel is to could make a diamond embedded with direction of solar cell 85 00:10:37,620 --> 00:10:46,530 to the solar cell or when Z current of any cell is reduced by shading an inverse voltage is created 86 00:10:46,980 --> 00:10:57,050 until this reverse voltage exceeds the light installation voltage so part of the total current both 87 00:10:57,060 --> 00:11:04,770 through partial light and the remaining current complete its false rumors is said. 88 00:11:04,980 --> 00:11:15,050 Now let's go to the wiring of solar panel of identical operating in series or when you connect solar 89 00:11:15,050 --> 00:11:23,420 panel in series the total output of current of the solar array is the same as the current pulsing throws 90 00:11:23,460 --> 00:11:24,080 signal. 91 00:11:24,260 --> 00:11:34,230 When you are connecting solar panels in Ceres the total output current of solar array is the same as 92 00:11:34,230 --> 00:11:42,120 the current pulsing signal a single panel or why is it true that our voltage is the sum mission of Z. 93 00:11:42,140 --> 00:11:45,460 Holder drops on each solar panel. 94 00:11:46,120 --> 00:11:48,030 Let's fix this an exam. 95 00:11:48,110 --> 00:11:57,810 If we had four pillars of one hundred and fifty two watt and 19 voltage and it MPEG it although the 96 00:11:57,820 --> 00:12:09,760 voltage will equal to four times 19 volts will equal to 76 volts I mean the voltage between this positive 97 00:12:09,790 --> 00:12:10,570 and is just negative. 98 00:12:10,960 --> 00:12:13,480 Well it was two 76 voltage. 99 00:12:14,230 --> 00:12:21,460 If we had one hundred and fifty two while Beryl was nineteen voltage and it and. 100 00:12:21,670 --> 00:12:23,460 The total voltage you would need. 101 00:12:23,460 --> 00:12:31,280 What does a number of the panel which is four times their breathing voltage of each panel which is nineteen 102 00:12:31,280 --> 00:12:31,980 volt. 103 00:12:32,120 --> 00:12:39,850 Now is that all the Volt should equal to four times nineteen Volt with equal to 76 means that voltage 104 00:12:39,850 --> 00:12:44,220 between this positive and this negative would equal to 76. 105 00:12:44,260 --> 00:12:54,780 Lord do not come up with equal to it M B or is the current of any modern thought that the bar will equal 106 00:12:54,780 --> 00:13:05,860 to the total voltage times the total current mean 76 volt dials eight and beer would equal to six or 107 00:13:06,230 --> 00:13:06,650 eight. 108 00:13:06,840 --> 00:13:14,420 What wave of solar panel of different greeting in C is lit. 109 00:13:14,720 --> 00:13:24,380 If we had three solar panel of one hundred and fifty two what nineteen voltage in it and beer and only 110 00:13:24,380 --> 00:13:33,050 one solar Ben with one hundred and seventy six wall and seventeen voltage and it and then we will find 111 00:13:33,050 --> 00:13:41,670 z z thought the voltage will equal to the last 19 the last nineteen plus nineteen will equal to seventy 112 00:13:41,670 --> 00:13:52,650 four more all the time will equal to the current of each module means it and b it knows it took the 113 00:13:52,660 --> 00:13:59,330 bar will equal to total voltage times the total current will equal to seventy four both times it and 114 00:13:59,360 --> 00:14:08,710 beer when it was to five hundred and ninety two what it means zero is s three per cent losses of the 115 00:14:08,710 --> 00:14:09,970 same installed power 116 00:14:13,460 --> 00:14:21,740 this times we have seen this come by a nation also the benefit of different voltage sheathing and different 117 00:14:21,740 --> 00:14:31,070 car three as you see we had two solar Benin of one hundred and fifty two watt and my Indian voltage 118 00:14:31,100 --> 00:14:40,210 and it and and one solar band and was one hundred and twenty six wild and the eighteen voltage and seven 119 00:14:40,230 --> 00:14:49,510 and beer and one other so that band with eighty five wild and seventeen voltage and five and big zap 120 00:14:49,510 --> 00:14:57,970 voltage of this every with equal to seventeen blast eighteen blast nineteen plus nineteen mean the total 121 00:14:57,970 --> 00:15:06,580 bullish will equal to seventy three Volt to the current of this solar array will equal to the lower 122 00:15:06,900 --> 00:15:16,790 of this error rate means will equal to five and bid it took the bar you mean that the voltage times 123 00:15:16,790 --> 00:15:26,470 at all to the current seventy three times five were equal to three hundred and sixty five wall or forty 124 00:15:26,470 --> 00:15:33,940 percent losses of Zen you stole the ball in this Examiner You can see that it's a total of three different 125 00:15:33,940 --> 00:15:44,320 types of solar been out of use is by types have its own voltage and current about 80 so it took a current. 126 00:15:44,320 --> 00:15:53,860 Here is the timeline by the battle of the law of this country and as a result the total wattage is reduced 127 00:15:53,980 --> 00:16:03,670 by 40 per cent compared to the previous exam whereas the losses of the other board is not significant 128 00:16:07,790 --> 00:16:13,550 the last type of coordination is seems and condition. 129 00:16:13,630 --> 00:16:18,390 The combination of series and better condition is also possible. 130 00:16:18,510 --> 00:16:26,300 Indeed this depend on the maximum possible total output voltage and the maximum possible total output 131 00:16:26,300 --> 00:16:35,670 car of the solar energy which are limited by the maximum input voltage and maximum impact of that charge 132 00:16:35,670 --> 00:16:36,280 cultural. 133 00:16:36,360 --> 00:16:44,450 For off grid system or a inverter for a greater point system as it would be shown in the next section 134 00:16:45,040 --> 00:16:45,930 calculation. 135 00:16:45,960 --> 00:16:48,660 Show you how many pairs and how to wire 136 00:16:51,840 --> 00:16:59,940 what you have to remember is that serious conviction increase the voltage or why is a better condition 137 00:17:00,020 --> 00:17:09,000 and carries the most serious and better condition result in more installed Watts which goes down. 138 00:17:10,150 --> 00:17:14,970 Should you decide to wire solar panel of different rate. 139 00:17:15,600 --> 00:17:26,940 Let's take this an exempt we had a solar panel one hundred eighty two watt and nineteen voltage and 140 00:17:26,990 --> 00:17:36,420 it m Biff set over the voltage of this array where it was to that oldest of each series means I am dim 141 00:17:36,420 --> 00:17:44,190 voltage lost 19 voltage means that all the voltage with equal to thirty eight volt buzzer to the current 142 00:17:44,190 --> 00:17:47,160 will be equal to each barrel. 143 00:17:47,190 --> 00:17:52,410 You mean the branch has it and bad current means the total current of this evergreen wood. 144 00:17:52,410 --> 00:17:59,280 It was too asserted to embezzle means the total power of this error rate will equal to zero. 145 00:17:59,310 --> 00:18:07,440 The voltage times that total current means thirty eight times thirty two and there will equal to twelve 146 00:18:07,440 --> 00:18:15,360 hundred sixteen watt or eight times one hundred fifty two watts. 147 00:18:15,360 --> 00:18:20,930 See you in the next lecture when we are going to discuss that better.