A nominal 5 kW mono-crystalline silicon photovoltaic array is to be grid connected via an isolated...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A nominal 5 kW mono-crystalline silicon photovoltaic array is to be grid connected via an isolated inverter located 10 m from the array. The array is composed of 60 modules where each photovoltaic module has a rating at STC of: Power = 85 W Voc = 22 V Isc = 5 A Vmp = 18 V Imp = 4.72 A • 1 (maximum overcurrent protection) = 14 A ● • The normal range of operating conditions at the site will mean a range of open circuit voltages (Voc) from 18.76 V to 23.74 V is expected and a range of Vmp voltages between 15.35 V and 19.44 V is expected. The inverter is rated at 4.8 kW continuous at 50 °C with the voltage and current ratings shown below: • Vmax = 285 V with a maximum power point tracking range of 130 V to 255 V The array has some shading that occurs in winter on the right-hand side column of modules of the array late in the afternoon as shown on the figure 1 (below). A central array junction box is available as shown in the diagram and a main photovoltaic cable is used to connect this main junction box to the inverter. (i) (ii) O O O O O limit= 29 A (current limited), Imax connected array = 40 A. O O O O How many strings and how many modules per string would you select and why? Sketch the wiring configuration for one string of the array, using figure 1 as a template. The wiring should be arranged to minimize losses of cable to junction box and take into account shading of the array. O O O O O O O O O O O O O O O O O O O O 0 Pv array junction box O O O O O O O O O O O Double pole break switch O O O O O O O O O O O O O O O O O O O O O O O Double pole break switch O O O O O O O O O O O O O O Py array cable Figure 1: PV array grid system O O O O O O O O Inverter O O O O O O O O O OOO O O O O O O O O O O O O Shaded PV A nominal 5 kW mono-crystalline silicon photovoltaic array is to be grid connected via an isolated inverter located 10 m from the array. The array is composed of 60 modules where each photovoltaic module has a rating at STC of: Power = 85 W Voc = 22 V Isc = 5 A Vmp = 18 V Imp = 4.72 A • 1 (maximum overcurrent protection) = 14 A ● • The normal range of operating conditions at the site will mean a range of open circuit voltages (Voc) from 18.76 V to 23.74 V is expected and a range of Vmp voltages between 15.35 V and 19.44 V is expected. The inverter is rated at 4.8 kW continuous at 50 °C with the voltage and current ratings shown below: • Vmax = 285 V with a maximum power point tracking range of 130 V to 255 V The array has some shading that occurs in winter on the right-hand side column of modules of the array late in the afternoon as shown on the figure 1 (below). A central array junction box is available as shown in the diagram and a main photovoltaic cable is used to connect this main junction box to the inverter. (i) (ii) O O O O O limit= 29 A (current limited), Imax connected array = 40 A. O O O O How many strings and how many modules per string would you select and why? Sketch the wiring configuration for one string of the array, using figure 1 as a template. The wiring should be arranged to minimize losses of cable to junction box and take into account shading of the array. O O O O O O O O O O O O O O O O O O O O 0 Pv array junction box O O O O O O O O O O O Double pole break switch O O O O O O O O O O O O O O O O O O O O O O O Double pole break switch O O O O O O O O O O O O O O Py array cable Figure 1: PV array grid system O O O O O O O O Inverter O O O O O O O O O OOO O O O O O O O O O O O O Shaded PV
Expert Answer:
Answer rating: 100% (QA)
To determine the number of strings and modules per string for the photovoltaic PV array we need to consider the voltage and current ratings of the inv... View the full answer
Related Book For
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
Posted Date:
Students also viewed these accounting questions
-
An AC source operating at 60 Hz with a maximum voltage of 170 V is connected in series with a resistor (R = 1.2 k) and an inductor (L = 2.8 H). (a) What is the maximum value of the current in the...
-
The local Driver's License Office has asked you to write a program that grades the written portion of the driver's license exam.The exam has 20 multiple choice questions. Here are the correct...
-
A cylindrical capacitor connected to a dc voltage source V touches the surface of water with its end (Fig. 3.56). The separation d between the capacitor electrodes is substantially less than their...
-
Describe how you plan to allocate your budget to each promotional activity. Provide a brief rationale. First, when developing a marketing budget plan, you want to start with the total budget...
-
Show how the following compounds can be made using the malonic ester synthesis. (a) 3-phenylpropanoic acid (b) 2-methylpropanoic acid (c) 4-phenylbutanoic acid (d) Cyclopentanecarboxylic acid
-
If two random variables X and Y are defined over a region in the XY-plane that is not a rectangle (possibly infinite) with sides parallel to the coordinate axes, can X and Y be independent?
-
Explain the difference between the Address and Addresses classes.
-
The local Audubon Society has just put a new bird feeder in the park at a cost of $500. The feeder has a useful life of 5 years and an annual maintenance cost of $50. Our cat, Fred, was very...
-
What ethical considerations arise in global supply chain management, particularly regarding labor practices, human rights, and environmental stewardship, and how can responsible sourcing initiatives...
-
This step requires you to complete some exceptions testing for the Employee p-card expenditures for the year ended 12/31/2023. Required: a. How many unique employees exceeded their annual authorized...
-
Write a c++ program that will produce this array: 2 8 3 16 32 5 In the array, 2 is stored in the ith location. The program should declare and initialize the integer array to store these values. It...
-
A sample of liquefied natural gas, LNG, from Alaska has the following molar composition: \(93.5 \% \mathrm{CH}_{4}, 4.6 \% \mathrm{C}_{2} \mathrm{H}_{6}, 1.2 \% \mathrm{C}_{3} \mathrm{H}_{8}\), and...
-
Draw a graph to show the effect of the new technology in the market for loanable funds. Suppose that the business cycle in the United States is best described by RBC theory and that a new technology...
-
Draw a picture of EmployeeGraph. EmployeeGraph V(EmployeeGraph) E(EmployeeGraph) = (V, E) {Susan, Darlene, Mike, Fred, John, Sander, Lance, Jean, Brent, Fran} = = {(Susan, Darlene), (Fred, Brent),...
-
Show that for a generalized logit model, \(T_{j k}(x)=\sum_{i=1}^{n} y_{i j} x_{i k}\) is a sufficient statistic for parameter \(\beta_{j k}(1 \leq j \leq J\) and \(1 \leq k \leq p)\).
-
In the absorption of component A (molecular weight $=60$ ) from an airstream into an aqueous solution, the bulk compositions of the two adjacent streams at a point in the apparatus were analyzed to...
-
Consider the quadratic function y = -x+6x-5. What do we know about the graph of this quadratic equation, based on its formula? The vertex is (3,4) and it opens upward. The vertex is (-3,-32) and it...
-
Tarick Toys Company manufactures video game consoles and accounts for product costs using process costing. The following information is available regarding its June inventories. The following...
-
Derive an expression for the geometric shape factor F1??2 for a rectangular surface A1, 1 by 20 m placed parallel to and centered 5 m above a 20-m-square surface A2.GIVENRectangular surface A1 and...
-
Water in turbulent flow is to be heated in a single-pass tubular heat exchanger by steam condensing on the outside of the tubes. The flow rate of the water, its inlet and outlet temperatures, and the...
-
To reduce the home heating requirements, modern building codes in many parts of the country require the use of double-glazed or double-pane windows, i.e., windows with two panes of glass. Some of...
-
Find one solution for each of the difference equations below: (a) \(y(n)+2 y(n-1)+y(n-2)=0, y(0)=1\) and \(y(1)=0\) (b) \(y(n)+y(n-1)+2 y(n-2)=0, y(-1)=1\) and \(y(0)=1\).
-
We define the even and odd parts of a sequence \(x(n), \mathcal{E}\{x(n)\}\) and \(\mathcal{O}\{x(n)\}\) respectively, as \[\begin{aligned}\mathcal{E}\{x(n)\} & =\frac{x(n)+x(-n)}{2}...
-
Find the general solution for the difference equation in Example 1.9 when \(a=b\). Example 1.9. Solve the difference equation y(n) + ay(n 2) = b" sin(n)u(n) assuming that ab and y(n) = 0, for n < 0....
Study smarter with the SolutionInn App