The Solar PV System Design Comprehensive Course //P1

Explain how solar cells assemble into panels of different sizes and outputs, and how efficiency under standard test conditions is determined by power per square meter.

Explain how 5-inch and 6-inch solar cells achieve 1000 watts per square meter at standard conditions, convert sizes to per-square-meter counts, and derive 15.6 watts and 24 watts per cell.

Review solar cell datasheets by examining type, size, and tables; compute efficiency from power output and cell area using a 1000 W/m² reference, and verify data with manufacturers before purchase.

Learn how connecting solar cells in series raises voltage regardless of cell size, compare six-inch and five-inch cells, and see how smaller cells can yield higher voltage.

Compare two Suntech solar panels with similar power output but different voltages, showing higher voltage uses smaller cells and a smaller panel, while higher current uses larger cells.

Cutting solar cells halves the current while keeping the voltage unchanged. Connecting pieces in series doubles voltage with the same current; connecting them in parallel increases current while maintaining voltage.

Compare Trina Solar's 60-cell panel with species solar panel's 120-cell design, highlighting series and parallel wiring, voltage and current differences, and a roughly 2.5 percent efficiency gain.

Explore how solar cell busbars differ by manufacturer and how increasing busbars to four or six reduces resistance, lowers current loss, and boosts panel efficiency and output.

Connect solar cells in series to raise panel voltage and size the panel using data tables: 60 cells, total power, voltage and current sums, plus 10 percent space.

compare panel efficiency to cell efficiency, noting it is about 10 percent lower due to non-power-producing space around the surface and frame, with cell efficiency at 18.2 percent.

Open the attached section notes, perform the calculations yourself to memorize concepts, read slowly to understand, and discuss doubts in the course discussion before tackling the final challenge.

Explore the solar panel datasheet overview, covering electrical characteristics, mechanical specifications, and temperature ratings, with stc and noct test conditions, cell temperature, irradiance, and air mass.

Examine mono vs poly silicon solar panels, noting mono panels are more efficient and pricier, provide power at STC and better temperature ratings, though mono panels weigh five kilograms more.

Explore how panel max power output, efficiency, and watts per square meter vary under STC and NOCT across multiple panel sizes, using example calculations.

Discover how high ambient temperatures raise cell temperature and reduce the solar panel's maximum power voltage, lowering output; learn how mounting distance and air circulation influence cell temperature in summer.

Explain how temperature and irradiance affect a solar panel's voltage and current, and compute minimum voltage in three steps using temperature coefficients of power and open-circuit voltage and STC values.

Compare mono and poly solar panels’ high temperature performance and learn to calculate minimum panel voltage from the temperature coefficient of max power and STC, revealing temperature-related power loss.

Compute panel maximum voltage by applying the open-circuit voltage temperature coefficient to the stc voltage. Use the temperature differences from 5° C and -5° C to estimate the voltage rise.

Apply NEC temperature correction factors for ambient temperatures below STC 25 to the panel's open-circuit voltage, using the table's multiplier to set the panel maximum voltage.

Compute the min and max number of solar panels in series for grid-connected PV systems by matching panel voltages to the inverter's 500–600 V window and 1000 V limit.

Explore configuring a pv array by wiring solar panels in series, parallel, or mixed layouts to reach 24 or 48 volt systems while maintaining polarity and warranty.

Learn how solar panel maximum current is determined from short-circuit current and irradiance under STC, with real irradiance up to 1251 W/m² and fuse sizing using 1.25 to 1.56 multipliers.

This lecture introduces the section notes PDF and the final challenge, urges you to read the notes thoroughly and perform the calculations yourself, with support available in course discussions.

Explore geographic coordinates by defining latitude and longitude, including the equator as 0 degree latitude and Greenwich as 0 longitude, to locate points and identify hemispheres (south, north, east, west).

Explore how latitude and longitude divide the earth into north, south, east, and west using the equator and prime meridian as references, with positive and negative signs for positions.

Explore how hemispheres and latitudes define global coordinates, including north/south latitudes, east/west longitudes, and key markers like the tropics, Arctic and Antarctic circles, for precise location determination.

Learn to read and write geographic coordinates by converting between decimal degrees and degrees minutes seconds, using manual steps and online tools, with practice problems and peer discussion.

Learn how to determine a location's time zone using longitude, convert degrees to hours by dividing by 15, and assess ahead or behind Greenwich time based on east or west.

Calculate the time difference between two locations by converting longitude to hours (divide degrees by 15), using same-side subtraction or opposite-side addition relative to the prime meridian and Greenwich time.

Explore how latitudes and the earth's 23.5-degree tilt cause seasonal changes across the north and south hemispheres, including solstices and equinoxes, and the sun's paths.

Explore the azimuth and zenith of the sun, and how solstices and equinoxes determine sun height and direction, including practical examples of sun angles by latitude.

Explore the sun path chart to master sun altitude, solar zenith, and seasonal changes: summer and winter solstices and equinoxes, using Shanghai's latitude and longitude as a reference.

Generate your sun path chart in six steps by entering latitude and longitude, converting from degrees minutes seconds, finding time zone, and choosing display and formatting options for solar data.

This section introduces the attached section notes and the final challenge, urging you to read the notes thoroughly, perform the calculations yourself, and complete the challenge before advancing.

Explore magnetic and true azimuth, calculate magnetic declination using coordinates and date with online tools, and convert between decimal and dms for accurate navigation.

Optimize solar panel output by aligning to true south in the northern hemisphere and true north in the southern hemisphere, accounting for magnetic declination and orientation errors that reduce power.

Set the default panel tilt from horizontal based on latitude and seasonal adjustments to optimize direct sunlight, with vertical tilt derived as 90 minus the horizontal tilt.

Explore tilt angle methods to maximize yearly solar energy across latitudes, with summer, winter, and four-season adjustments, using latitude-based formulas and a table of online tools.

Analyze how panel orientation and azimuth affect solar power, showing 1.1% loss per five degrees, 20% loss for east/west, and up to 40% loss for opposite direction, using PV Watts.

In the southern hemisphere, orient solar panels toward true north to maximize irradiance. Misalignment costs about 1.1% per five degrees, with east/west losing 20% and south 40% of output.

Understand how seasonal changes affect pv production in the north and south hemispheres, and why southward orientation boosts output in the north while northward orientation does so in the south.

Analyze fixed tilt settings to maximize solar irradiance and power production, comparing wintertime, summertime, and yearly tilts to study their effect on monthly solar radiation distribution.

Adjustable tilt settings influence solar irradiance and power production across winter and summer. Compare results side by side using weather data and system information for accurate seasonal analysis.

Explore geometry basics, including shapes and their properties, and learn to calculate area and perimeter for squares and rectangles, understand diagonals, and how right angles create triangles.

Explore triangles by angles and sides, and learn how the longest side faces the biggest angle and how right, acute, and obtuse types relate to solar pv design calculations.

Identify the hypotenuse, opposite, and adjacent in a right triangle, and solve for any missing side using the Pythagorean theorem or trigonometric functions.

Explore the three basic trigonometric ratios—sine, cosine, and tangent—and how to label a right triangle’s sides (opposite, adjacent, hypotenuse) to find missing sides or angles.

Explore how shadow direction is opposite the sun and how length depends on sun height (zenith) and azimuth, enabling shadow calculations by time of day and date.

Learn to calculate shadow length at the summer solstice using a right triangle, employing tangent and sine relations with opposite, adjacent, and hypotenuse, in degree mode.

Calculate and compare object shadow lengths at winter solstice using sun elevation, right-triangle relationships, and tangent methods, illustrating longer winter shadows, with zero shadow as reference for solar panel spacing.

Estimate vertical-object shadows on equinoxes using sun elevation and azimuth, applying tangent-based and hypotenuse methods within a right-triangle framework, and compare shadow lengths to summer and winter.

Calculate the longest shadow for a solar panel across tilt, location, and time to identify a no-shadow window during winter solstice, using sun elevation, tangent, and azimuth corrections.

Explore geographical coordinates for solar pv system design by mastering longitude and latitude in decimal degrees, degrees minutes seconds, and conversion between formats using online calculators.

Explore the PV lots calculator to estimate annual solar irradiance and PV power production for any location and orientation, and compare tilt angles for winter and summer performance.

Explore how to access daily and monthly sunrise and sunset data for any location and date, compute day length, and understand solstices and equinoxes for solar PV planning.

Enter location coordinates in decimal degrees or degrees minutes seconds to determine magnetic declination for solar panel orientation; the two-section tool shows west negative and east positive.

Learn to calculate sun position using azimuth and zenith with online tools, interpreting magnetic versus true azimuth, solar noon, and declination for solar pv design.