A TWO AXIS SOLAR TRACKING SYSTEM TO TRACK SUN RAYS
Abstract / Short Description (Simplified for Non-Experts)
This invention is a solar panel mounting system that automatically moves solar panels in two directions so they continuously face the sun throughout the day and across seasons.
The system uses a simple mechanical linkage with sliding beams and support struts to tilt the panels north-south and rotate them east-west using controlled linear motion from actuators. This avoids complex gears and heavy rotating structures used in conventional dual-axis trackers.
As a result, solar installations can capture more sunlight and generate more electricity while using a lighter, easier-to-maintain structure suitable for large solar farms.
Problem the Invention Addresses
Solar panels generate the most electricity when sunlight hits them directly. However, the sun’s position changes constantly:
- During the day — moves from East to West
- During the year — shifts North to South due to seasonal changes
Because of this movement, most solar installations cannot maintain the ideal angle all the time.
Limitations of Existing Solutions
1. Fixed-Tilt Systems
- Panels are installed at a single angle
- Easy and low cost, but large energy loss occurs for most of the day
- Significant reduction in annual power generation
2. Single-Axis Trackers (Common Industry Standard)
- Panels move only East-West (daily movement)
- Cannot adjust to seasonal sun position
- Performance drops during winter and seasonal transitions
- Plants do not reach maximum energy yield
3. Conventional Dual-Axis Trackers
- Can follow the sun in both directions
- Provide high energy output
- However:
- Mechanically complex
- Heavy structures
- Expensive gearboxes and drive systems
- High maintenance requirements
- Difficult to scale for large solar farms
Resulting Challenges for Solar Developers
- Lower electricity generation than possible
- Reduced return on investment
- Higher land usage per MW installed
- Increased cost of energy (LCoE)
- Mechanical failures and maintenance in complex trackers
In simple terms:
Solar plants must choose between affordable systems that waste sunlight or efficient systems that are too expensive and complicated to deploy at scale.
The Invention — Solution to the Problem
The patented invention provides a practical dual-axis solar tracking system that allows solar panels to follow the sun both daily (East-West) and seasonally (North-South) using a simple mechanical structure instead of complex rotating machinery.
Instead of rotating the entire panel structure with heavy motors and gearboxes, the system converts straight-line (linear) movement into controlled angular motion. This is achieved through a four-bar linkage mechanism made of beams, struts, and supporting pillars.
How the Solution Works
The system uses two coordinated motions:
1. East–West Movement (Daily Sun Path)
- A sliding upper beam moves in a straight line
- This motion is transferred through flexible brackets and bearings
- The solar panels rotate to follow the sun from morning to evening
2. North–South Tilt (Seasonal Sun Shift)
- A lower sliding beam moves between support pillars
- Connected struts convert the sliding motion into frame tilting
- Panels adjust angle for summer and winter sun positions
Both movements are powered by actuators and can be controlled automatically by a controller.
Key Concept Behind the Innovation
The invention replaces:
- Torque tubes
- Gearboxes
- Large rotating shafts
- Complex multi-motor systems
with a balanced linkage geometry that moves many panels using minimal force.
What Makes This a Practical Industry Solution
The system achieves dual-axis tracking while keeping the structure simple and scalable:
- Linear motion instead of heavy rotational drives
- Fewer moving parts
- Ability to move multiple panels with one actuator
- Easy installation and transport
- Stable under wind forces
- Suitable for large solar farms
Commercial Outcome
This invention solves the industry trade-off by delivering:
High energy capture (dual-axis performance) + low mechanical complexity (single-axis practicality)
As a result, solar plants can generate more electricity without adopting expensive or maintenance-heavy tracking systems, improving overall project economics and scalability.
The Gap in Existing Technologies
Prior solar tracking technologies fall into two separate categories, each with critical limitations:
1. Single-Axis Trackers
- Track the sun only from East to West (daily movement)
- Do not adjust for seasonal North-South sun position
- Result: noticeable loss of energy generation, especially during winter and seasonal transition periods
2. Conventional Dual-Axis Trackers
- Track both daily and seasonal movement
- Provide higher energy output
- However:
- Require complex rotating structures
- Use heavy torque tubes, gear drives, and multiple motors
- High manufacturing and installation cost
- Difficult maintenance
- Limited scalability for large solar farms
The Industry Gap
There has been no practical system combining:
- Dual-axis energy performance
- with
- Mechanical simplicity and cost efficiency suitable for utility-scale deployment
In other words, the market had to choose between:
- Affordable but lower-yield systems, or
- High-yield but commercially impractical systems
How the Invention Fills the Gap
The patented system introduces a four-bar linkage mechanism that converts linear actuator motion into panel rotation and tilt.
This enables dual-axis tracking without heavy rotating machinery or complex drive assemblies.
Result:
A commercially deployable solution delivering near dual-axis performance using a simpler, lighter, and lower-cost mechanical architecture.
Conclusion
The invention closes a long-standing industry gap by making dual-axis tracking economically and mechanically practical for large-scale solar installations — something prior art systems were unable to achieve.
Complete Specification
| Country | Current Status | Patent Application Number | Patent Applicant | Patent Number | Title | Google Patent Link |
| USA | Granted | 16/968, 694 | Varun Sachar | 11114975 | A SOLAR TRACKING SYSTEM | Click to open |