A TWO AXIS SOLAR TRACKING SYSTEM TO TRACK SUN RAYS
Overview
The invention relates to a solar panel mounting system that automatically follows the sun’s position throughout the day and across seasons.
Problem
Conventional fixed-tilt structures and common single-axis trackers cannot keep solar panels aligned with the sun at all times. This reduces energy generation, especially during seasonal changes. Traditional dual-axis trackers improve performance but are often heavy, complex, and expensive to deploy at large solar plants.
Solution
The patented system introduces a simplified dual-axis solar tracking structure that adjusts panel orientation in two directions using a mechanically efficient linkage and actuator arrangement, providing higher energy capture while remaining practical for large-scale installations.
Key Features
- Two-direction tracking (daily east-west and seasonal north-south movement)
- Four-bar linkage mechanism converting linear motion into rotation
- Rail-beam and strut based movement instead of heavy gear systems
- Microcontroller-based automatic sun-tracking control
- Modular structure designed for ground-mounted solar farms
Benefits
- Increased energy generation compared with fixed or single-axis systems
- Lower mechanical complexity than conventional dual-axis trackers
- Reduced maintenance and installation cost
- Suitable for utility-scale solar projects
Claim-Based Protection
The patent protects the structural arrangement of beams, struts, joints, and actuators that enable controlled dual-axis movement of solar modules using a simplified mechanical linkage system.
The Problem the Invention Addresses
Solar panels generate the most electricity when they directly face the sun. However, the sun’s position constantly changes — it moves across the sky during the day and shifts north-south across seasons throughout the year. Most solar installations cannot continuously maintain the best angle toward the sun.
Today, the industry mainly uses three types of mounting approaches:
- Fixed-tilt structures
- Panels remain at one angle all year.
- Simple and low cost
- But they lose a large amount of potential energy because they are rarely aligned with the sun
- Single-axis trackers (commonly used in utility solar plants)
- Panels rotate only east-west during the day.
- Improves generation compared to fixed systems
- Still inefficient during mornings, evenings, and seasonal shifts (winter vs summer)
- Traditional dual-axis trackers
- Panels follow the sun in both daily and seasonal directions.
- Best energy output
- However, they are mechanically complex, heavy, expensive, and difficult to maintain at large scale
Because of this, solar developers face a major trade-off:
- Affordable systems → lower energy output
- High-performance systems → too costly and complicated
As solar tariffs decline worldwide, projects must produce more electricity per installed megawatt to remain financially viable. The industry needs a solution that delivers near dual-axis performance without the cost, weight, and maintenance burden of conventional dual-axis machines.
In simple terms:
There is no practical system today that combines high energy generation with low mechanical complexity and scalable cost. This gap directly impacts project profitability, land usage efficiency, and long-term operational reliability in large solar farms.
The invention is designed specifically to solve this performance-versus-cost conflict.
The Invention — The Solution to the Problem
The invention provides a mechanically simplified dual-axis solar tracking system that automatically keeps solar panels aligned with the sun throughout the day and across seasons, while remaining practical for large-scale solar installations.
Instead of using heavy rotating platforms, complex gearboxes, or large torque tubes like conventional dual-axis trackers, the system uses a smart structural arrangement that converts simple linear movement into controlled panel rotation.
How the Solution Works
The solar modules are mounted on a frame supported by ground-fixed pillars. Two independent movements are created:
- East-West (daily sun movement)
- A rail beam and actuator move linearly and rotate the module frame horizontally so the panels follow the sun from morning to evening.
- North-South (seasonal sun movement)
- A second rail beam connected through struts adjusts the tilt angle of the frame, allowing seasonal alignment as the sun shifts across the year.
These motions are achieved through a four-bar linkage mechanism, which transforms actuator motion into smooth angular movement. Spherical joints allow flexibility and maintain alignment even on uneven terrain.
A microcontroller-based control system automatically positions the panels using programmed solar path calculations. Multiple tracker rows can be synchronized, reducing control and drive complexity.
Key Characteristics of the Solution
- Dual-direction tracking using simple linear actuators
- Mechanical linkage replacing complex rotating machinery
- Balanced structural geometry for stability
- Modular construction suitable for large solar farms
- Automatic sun-tracking control
Result
The invention delivers the energy-capture advantages of dual-axis tracking while avoiding the cost, weight, and maintenance challenges that previously prevented widespread deployment at utility scale.
In practical terms, it bridges the gap between low-cost single-axis trackers and high-performance dual-axis systems by combining improved energy yield with scalable installation economics.
The Gap in Prior Art
Existing solar mounting technologies force project developers to choose between performance and practicality:
- Fixed-tilt systems
- Low cost and simple, but large energy losses because panels cannot follow the sun.
- Single-axis trackers (industry standard)
- Track the sun only during the day (east–west).
- They still lose substantial energy during mornings, evenings, and seasonal changes when the sun’s height varies.
- Conventional dual-axis trackers
- Provide the best energy output by following the sun in both directions.
- However, they rely on heavy rotating structures, gear mechanisms, and complex drive systems.
- As a result, they are:
- Expensive to manufacture and install
- Difficult to maintain
- Structurally heavy and less reliable for large solar farms
Because of these limitations, dual-axis tracking has not been widely adopted at utility scale despite its energy advantage.
The Missing Solution
The industry lacked a system that could:
- Deliver near dual-axis energy performance
- Maintain mechanical simplicity
- Be cost-effective for large solar plants
- Reduce maintenance and structural complexity
How the Invention Fills the Gap
The patented system introduces a structurally simplified dual-axis tracker using a linkage-based mechanism and linear actuation instead of complex rotating machinery. This enables dual-direction solar alignment while remaining practical and scalable for commercial deployment.
In short:
The gap was the absence of a commercially viable, large-scale dual-axis tracking solution combining high energy yield with manageable cost and mechanical simplicity — which this invention directly resolves.
Complete Specification
| Country | Current Status | Patent Application Number | Patent Applicant | Patent Number | Title | Google Patent Link |
| Canada | Granted | 3100975 | Varun Sachar | 40421 | A SOLAR TRACKING SYSTEM | Click to open |