Dual Axis Solar Tracker

Dual Axis Solar Tracking System Basics: Everything You Need to Know

Indeed, solar energy is one of the fastest-growing sources of renewable power around the world. Improved technology has made solar energy systems more efficient in any way possible-including with the feature of tracking. A good example of the advance technology in this area is a dual axis solar tracker. If you are looking for improving your solar installation, it may prove to be an eye-opener to learn how this system works and why it’s valuable. It will discuss the basic principles of dual axis solar tracking systems, how they work and how they can optimize energy production using a practically based approach derived from real-world case studies.

Problem: Problems with Solar Efficiency

The problem with traditional solar panels is they are incapable of tracking the path of the sun. Fixed solar panels are tilted at a fixed angle to collect the maximum amount of sunlight. They are generally slanted towards the sun with an aim to maximize production for its most intense hours of the day. However, the sun moves during the day, and it also changes positions during the season, hence energy wastes in fixed systems. That inefficiency adds up to less power produced and, over time, a less efficient return on investment.

Another concern is that in massive solar farms or an industrial setup, which is crucial to generate the highest output to save on energy, even a slight increase in panel efficiency would mean major savings. When your system is tracking the sun and adjusting to its direction, more electricity is produced, thus resolving inefficiency.

The Price of Ignoring Advanced Technology

Savings of not using the latest technologies such as dual axis solar trackers can be enormous. Renewable energy is in high demand, and an enterprise or homeowner based on fixed solar panels loses up to 40% more power than would be generated by the right tracking system. If you’re putting up solar at a commercial or industrial scale-or just at a larger residential scale-you’re wasting money and efficiency if you don’t go with dual axis solar trackers.

Here’s the point: a solar farm in Arizona was underperforming simply because of fixed-panel solar arrays. Although the region has vast potential in solar energy, the farm wasn’t producing the maximum energy it could, mostly during off-peak hours. After replacing their tracking system with a dual axis solar tracker, they were able to increase power production by 35%. Case in point: dual axis solar trackers have always proven to increase efficiency. It saves businesses on electricity, which means faster payback of their investments.

Dual Axis Solar Tracker​

Dual Axis Solar Tracker

All these problems are solved by the dual axis solar trackers as they can move the solar panels on two perpendicular axes or directions: along the horizontal and along the vertical. One will move from east to west, while the other will move from north to south. This will make the solar panels track the sun during the day, going through the changes in tilt and orientation to reflect the maximum amount of available sunlight at any one time.

Let’s now break down the mechanics involved in this system.

How Does a Dual Axis Solar Tracker Work?

A dual axis solar tracker system basically consists of the following major parts:

ASolar Panels: These are similar to standard photovoltaic panels that capture sunlight and convert it into electricity.
B.  Mounting System: This is the supporting structure of the dual axis tracker that supports the panels with a lifting and tilting ability.

c. Tracking Mechanism: Consists of sensors and motors that are responsible for tracking the position of the solar panels in two axes. These sensors trace the actual positions of the sun at any given time and send signals to the motors, which adjust the orientation of the panel relative to the path.
D. Control System: The “brain” is the control system that processes the information received from the sensors and adjusts it in a way that will affect the motors.
The horizontal axis is adjusted to the east-west direction of the sun throughout the day while the vertical axis on account of the change of the elevation of the sun in the sky during the course of the day as well as with changing seasons. In this way, dual axis trackers are able to put the solar panels on the correct angle to get the maximum amount of sunlight.

Primary Advantages of Dual Axis Solar Tracker

Maximizes Energy Capture: The first advantage of a dual-axis solar tracker is its ability to maximize energy capture. This is because the system adjusts constantly toward the sun’s position, hence collecting far more sunlight than a system of fixed panels does. Researchers have noted through a case study at a solar farm in Texas that system energy output increased by 37 percent when they implemented the use of dual-axis tracking compared to a fixed panel system.

Better Return on Investment Return on investment for dual axis trackers will likely be a few years sooner than for single-axis systems because they boost energy yields. A commercial installation in California calculated that while a dual axis system was 20% more expensive to deploy, the superior energy capture paid back in under 4 years compared to 7 years for a fixed-panel system.

Seasonal Variations: The dual axis tracker performs best when the sun angle changes with seasons. In the northern climes, the sun is much lower during winter and dual axis tracking can also change the panel tilt to catch more sunlight thus increasing the energy at the most needed time.

Suitable to Large Installations: The tracking type of system is best used in huge commercial and utility-scale solar installations where more energy production is the priority. More efficiency allows these setups to produce more electricity per square meter, and in the long run, they cost-effectively pay themselves

Case Study: Increasing Energy Production of a Giant Solar Farm
To understand the practical impact of dual axis solar trackers, let’s analyze a case study from a large solar farm in Australia. When originally installed with fixed-tilt solar panels, the system was underperforming, particularly during early morning hours and late afternoons.

The management of the farm resolved to upgrade a segment of the system to incorporate dual axis trackers. In just one year, the energy production of the dual axis tracker part of the system was compared to the fixed-tilt part. The results yielded an improvement of 32% in energy production for the part of the dual axis tracker. Increasing energy production would not only offset the additional installation cost but also save tremendous sums of money on electricity bills for the local grid.

More importantly, during the winter months when the sun was much lower in the sky, the dual axis trackers adapted and kept a much higher level of efficiency than fixed panels did not and could not achieve.

Key Factors Before Installing a Dual Axis Solar Tracker

While the advantages of dual axis solar trackers are obvious, several factors come into play before choosing to install one.

Initial Costs: The discussion on the above lines shows that a dual axis system is costlier than the fix-based system initially, considering the additional mechanical parts and control systems. But over a period of time, the whole cost will reduce considering the higher energy produced.

Maintenance Requirements: Two-axis trackers have moving parts, so they require more maintenance compared to a fixed panel system. The motors and control systems need to be checked periodically to ensure that they operate hassle-free. However, most modern systems are built to last and come with 20-25 year warranties.

Space Requirements: Dual axis trackers require much more space than the fixed-panel system. Panels need to have some free space to tilt and rotate without each other’s obstruction. Therefore, they do not fit small residential rooftops much but are more suitable for large open spaces like solar farms or commercial installations.

Location and Climate: Dual axis solar trackers are site-specific. That is, their applicability is site-specific. The potential for added benefits in using dual axis tracking systems lies only where the region has high solar insolation with clear skies, such as in desert locations. However cloudy or low-sun regions hardly justify the added complexity in light of the added cost.

Factual Data from Industry Studies
Industry studies’ data has added further validation to the effectiveness of dual axis solar trackers. According to the National Renewable Energy Laboratory, an experiment has been established that dual axis trackers can increase annual energy output by as much as 45% compared with fixed panels in regions of recorded high sun exposure. According to a published study by the Fraunhofer Institute for Solar Energy Systems, double axis trackers enhance annual yield up to 38% in Mediterranean regions

Future of Dual Axis Solar Trackers

With rapid development in the field of solar technology, dual axis solar trackers seem yet more efficient and cheaper. Advances in sensor technology, machine learning algorithms for optimizing tracking angles, and more robust materials are all taken together toward the future of a solar tracking system.

More importantly, dual axis trackers that employ AI-based systems appear to be the most potential contender. The future machines would utilize real-time weather data along with predictive modeling to adjust panels even more accurately than the best ones in the past, increasing efficiency even further. This would translate into quicker ROI and hence greater attractiveness for large scale and industrial consumers of energy to invest in solar energy.

Conclusion: Invest in a Dual Axis Solar Tracker?

A dual axis solar tracker is worth the investment if your aim is to maximize the efficiency of your solar energy system, especially large-scale and commercial purposes. In this case, the inefficiency problem, which is usually associated with fixed panels, gets solved since your solar array has the capability to track the sun’s path throughout the day in its attempt to catch all possible sunlight.

Compared to this, the upfront cost for dual axis trackers is a bit higher, but the more energy produced and thus the shorter ROI payback for any business looking forward to long-term energy savings makes it a very attractive option. In your case, if you have good solar exposure in your location and you do have the space to install, great, dual axis trackers will significantly improve your system’s performance.

 

Not only will they make sense from the point of view of energy production itself but, in the long run, they will harmonize with the trend that the world is adopting more and more towards renewable resources and sustainability. Case studies in real life show far greater benefits over costs, thereby making dual axis solar trackers the smart solution toward maximizing solar power in the future.

What are the environmental benefits of dual axis solar trackers?

Dual axis solar trackers offer a number of environmental advantages that have helped them be very popular for sustainable energy solutions. The most important ones are as follows:

High Energy Efficiency: During seasonal variation at different times of the day, dual-axis trackers tilt the solar panels to face the sun, hence hugely increasing the energy production. Therefore, the same amount of sunshine produces more electricity, meaning alternative energy sources rely less and decrease carbon in the atmosphere.
Reduced Land Use: Since dual-axis trackers generate more power, fewer panels are required to generate the same amount of energy compared to fixed systems. This means that the physical footprint for solar installations can be smaller in size, which conserves natural habitats and other uses of land.

Lower Carbon Footprint: In fact, with higher efficiency that dual axis trackers demonstrate over single axis models, more fossil fuel-based energy systems can be replaced by solar power systems. That substitution will contribute to a certain form of decrease in carbon emissions that have been found to contribute the most to global climate changes.
Sustainable Resource Utilization: Solar energy is a replenishing resource and allows for the use of dual axis trackers that maximize capture. Therefore, it gives minimum use of nonrenewable resources-this includes coal, oil, and natural gas-for a sustainable future.

What are the economic benefits of using dual axis solar trackers

The dual axis solar trackers have multiple economic advantages that make them even more attractive as an investment for residential and commercial photovoltaic appliances. Among these major benefits are the following:

1. More Electricity: Dual axis solar trackers can produce up to 40% more electricity than what fixed solar panels will give due to their boost compared to fixed solar panels. This, therefore means larger savings on energy bills, and a relatively faster return on investments.

2. More Value for Money: More ROI: Higher energy output from dual-axis trackers gives more ROI than fixed systems. Higher upfront cost will yield higher ROI in the long term.

3. Shorter Payback Period: With the improved efficiency and generation of energy, payback period for the dual axis solar trackers is relatively short. The payback time is reduced, and incomes are generated as fast as possible.

4. Future-Proofing: With a dual axis tracker, sun angles are updated yearly ensuring that the solar installation stays quite efficient over the years. This adaptability means that the system will continue performing at an optimal level when it protects the investment against changing sun patterns in the future.

5. Optimized Land Use: Because dual axis trackers are more efficient, fewer panels are needed to produce the same amount of energy compared to fixed systems. This can lead to a smaller physical footprint for solar installations, which is particularly beneficial in areas where land is expensive or limited

6. Enhanced Property Value Installation of a dual-axis tracking system may enhance property value. As a matter of fact, most homebuyers are willing to pay more for homes with efficient and high-end solar energy systems, recognizing long-term savings and environmental advantages.

7. Job Development and Economic Benefits: Installation and maintenance of dual axis solar trackers generate jobs in renewable energy, thus having direct positive impacts on local economic growth and employee skill developments in the green technologies department.

Dual axis solar trackers are one of those solutions which should increase the financial gains from solar energy systems. These do not only increase the production and efficiency of energy but also give long-term financial benefits for the amount invested in them.

FAQ'S

Q. Are single-axis solar trackers better than dual-axis trackers?

In terms of efficiency and precision, dual-axis trackers are better than single-axis solar trackers. 

But, at the same time, they’re more expensive than the single axis ones.

Q. How does a dual axis solar tracker function?

A dual axis solar tracker works the same way as single-axis trackers; the only difference is that it rotates along both horizontal and vertical axes. 

Q. Is a dual axis solar tracking system costlier than the static panels?

Yes, a dual axis solar tracking system is costlier than static panels. In fact, it’s costlier than the single axis solar trackers too.

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