Solar Servo Tracking Control With Wireless Multi-Module Torque Drive
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Solution Overview
Problem
Existing solar tracking devices face challenges in accurately detecting solar azimuth in changing weather conditions, have high costs due to individual CdS light sensors and insufficient driving torque for multiple solar module assemblies, and require manual maintenance, leading to inefficiencies in photovoltaic power generation.
Innovation Solution
A solar servo control tracking device with a single solar cell sensor unit for luminance detection, high torque driving units using AC single phase inductors, and remote monitoring and control capabilities via wireless communication, enabling efficient tracking and monitoring of multiple solar module assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single solar cell sensor unit is used to detect solar azimuth, then cost is reduced and tracking accuracy is improved, but the ability to detect solar azimuth in changing weather conditions deteriorates
Solution Approach 1:
The patent combines multiple detection methods (solar cell sensor for luminance detection and proximity sensor for position detection) into a single integrated control system. This merging allows the system to use the strengths of each sensor type - the solar cell sensor provides accurate luminance-based azimuth detection while the proximity sensor provides position feedback, together overcoming the limitations of using either sensor alone in changing weather conditions
Solution Approach 2:
The integrated control panel acts as an intermediary that processes signals from both the solar cell sensor unit and proximity sensor. It calculates the solar azimuth based on luminance detection and compares it with the position detected by the proximity sensor, using this intermediate processing to determine the most accurate azimuth information even when weather conditions change
2Force
If a high torque driving unit with AC single phase inductor is used, then driving torque for multiple solar module assemblies is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the traditional DC motor with an AC single phase inductor that converts electrical energy directly to mechanical torque through electromagnetic induction. This substitution eliminates the need for complex mechanical components like worm gears and reduces the need for additional power conversion equipment, thereby reducing overall system complexity while providing sufficient driving torque for multiple solar module assemblies
Solution Approach 2:
The AC single phase inductor serves multiple functions: it provides the driving torque for the solar module assemblies, acts as the primary power conversion device from AC to mechanical energy, and eliminates the need for separate DC motor and switching mode power supply components. This multi-functionality reduces both device complexity and cost
3Productivity
If remote monitoring and control capabilities are added, then maintenance cost is reduced and operational efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements a feedback system where the operating angle sensor unit continuously monitors the position of solar module assemblies and sends this information to the tracking device controller. The controller then sends control signals back to the AC single phase inductor to adjust the position, creating a closed-loop feedback system that enables remote monitoring and control while maintaining precise tracking operation
Solution Approach 2:
The wireless communication module and TCP/IP communication module act as intermediaries between the tracking device controller and the remote monitoring system. These communication interfaces translate control signals and sensor data into standardized communication protocols, enabling remote access without adding significant complexity to the core tracking mechanism
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution improves tracking accuracy and efficiency, allowing for optimized photovoltaic power generation by remotely controlling and monitoring multiple solar module assemblies, reducing costs and enhancing reliability.
Implementation Method 1
a single solar cell sensor unit detecting luminance of sunrays with respect to a solar azimuth
Implementation Method 2
a high torque driving unit having an AC single phase inductor to generate a driving torque
Data Source
AI summary
A solar servo control tracking device is disclosed. The device includes: an integrated control device having a solar cell sensor unit detecting luminance at a solar azimuth, and an integrated control panel transmitting a control signal at a maximal solar azimuth, calculated by comparing a solar azimuth from the luminance at a solar azimuth; and solar tracking devices, respectively having a tracking device controller receiving the control signal via a wireless link, a high torque driving unit with an AC single phase inductor to generate driving torque by the control signal from the tracking device controller, solar module assemblies driven by the high torque driving unit to track the solar azimuth in accordance with the control signal, and an operating angle sensor unit installed to the high torque driving unit to detect operating angles of the solar module assemblies that track the sun by the control signal.