[Tutorial] Polystring Connections & Power Optimizers in PV*SOL premium (SolarEdge, Tigo, Maxim.. ) скачать в хорошем качестве

[Tutorial] Polystring Connections & Power Optimizers in PV*SOL premium (SolarEdge, Tigo, Maxim.. )

Free Trial Version: http://www.valentin-software.com/serv... This tutorial shows you how to connect multiple module areas with non-uniform orientation to one MPP tracker. Note that also the number of modules per module area is different We will start with a prepared 3D project, where the building and the module areas are already defined. First, we configure the system only with polystring connections, where we connect both module areas on the roof (right side) to one MPP tracker and the mounted modules on the left to another MPP tracker. Then we configure the system with power optimizers, connecting all modules in one string For each configuration we look at the results and see how the I-V characteristics look like. Let’s open the prepared project in PV*SOL premium 2018 Then we go to the 3D page and open the 3D environment We have already defined a building with dormers and a small garage There are four module areas: Two mounted systems on the garage roof one on the roof of the main building and one on the dormer Now, let’s configure the module areas We go to ‘Module Configuration’ and select ‘Configure all unconfigured modules’ Here, we select all module areas by holding "Ctrl" Then we click on ‘Configure module areas together’ Now, we enable the ‘Polystring Configuration’ and select the inverter model we want. In this example we take the SMA 5.0-1AV-40 It has two MPP trackers where we want to connect our module areas to We add a row to both MPP trackers Then we type in the number of modules of the module areas From the list here we select the right module area. We repeat this for the other module areas. Now we have configured all the modules in our system. Let’s check it. The current is too high and the voltage could be higher So, let’s connect the strings in series. Now, current and voltage are good for this MPP tracker For MPP tracker 1, the voltage is slightly too high, but that’s ok for now. Also, the sizing factor is very high. Usually we would have to take a bigger inverter, but we’ll leave it for now. By clicking ‘OK’ we close the configuration. Now we have a polystring system with 4 module areas on 2 MPP trackers Now, let’s go back to PV*SOL and simulate the system. Quick check of the module areas OK, let’s see the circuit diagram 4 module areas, connected to 2 MPP trackers Before we simulate we check if the recording of i-v characteristics is enabled. Now we start the simulation Let’s have a look at the results Yield reduction due to shading is 8% PV energy is 6263 kWh/a The energy balance gives more information on the system losses We have high losses due to partial shading and configuration mismatch Let’s see how the i-v characteristics look like. First, we select both MPP trackers. Then we select the date we want to analyse Checking ‘P-V’ also shows the power-voltage curves Here we see the i-v and p-v characteristics of our polystring system. You can see the typical ‘bumps’of polystring connections On the left you also see the diffuse and direct shading ratios for each module. See how varying shading conditions affect the i-v characteristics Now, let’s add power optimizers to the system. We go to ‘Module configuration’ again and select the configuration The ‘Edit’ button is just above Here we can check the ‘Power Optimizer’ option The inverter is undersized, so we have to choose a bigger one. Then, we choose SolarEdge as inverter manufacturer and select the right model. This inverter has only one MPP tracker So we add two more rows to it and set module numbers and areas accordingly We want to connect all to one string, so we choose ‘String 1’ Now we can click ‘OK’ and leave the 3D environment. All modules in one string! Let’s simulate this The PV energy is slightly higher. The shading losses are still there but the mismatch losses are 0% But we now have power optimizer losses Let’s see the i-v characteristics There is only 1 MPP tracker, so we add the unshaded curves as well The curves show the typical hyperbolic character If plotted as power-voltage curve, the constant power output becomes apparent. Thanks a lot for your attention.