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A position sensor and focus control system
A position sensor and focus control system
- Invention focuses on concentrated solar technology for power generation and industrial heat applications.
- Utilizes mirrors or lenses with tracking systems to focus sunlight onto a small target area.
- Developed sensor and control system to dynamically adjust mirror focal length for optimal energy concentration.
- Enhances system efficiency by maintaining accurate solar focus under varying conditions.
Vacuum-membrane solar dish facets are used in small-scale Concentrated Solar Power (CSP) trackers to reflect solar radiation to a central receiver, generating heat and power. These facets, made up of a parabolic dish with a flexible reflective membrane, need a precise focal length to maintain system efficiency. A low internal vacuum between the dish and membrane adjusts the focal length, countering the effects of changing ambient conditions that can alter membrane depth and thus the focal length, impacting CSP efficiency.
Vacuum-membrane solar dish facets are used in small-scale Concentrated Solar Power (CSP) trackers to reflect solar radiation to a central receiver, generating heat and power. These facets, made up of a parabolic dish with a flexible reflective membrane, need a precise focal length to maintain system efficiency. A low internal vacuum between the dish and membrane adjusts the focal length, countering the effects of changing ambient conditions that can alter membrane depth and thus the focal length, impacting CSP efficiency.
To address this, a focus control system with a sensor and actuator adjusts the membrane’s position to maintain optimal focal length. However, current systems face high sensor costs, bulkiness, maintenance difficulties, and inaccuracies due to temperature changes. My invention seeks to overcome these issues.
To address this, a focus control system with a sensor and actuator adjusts the membrane’s position to maintain optimal focal length. However, current systems face high sensor costs, bulkiness, maintenance difficulties, and inaccuracies due to temperature changes. My invention seeks to overcome these issues.
The linear displacement sensor with the compact control system at a total cost of USD 80 and power consumption of 3.3 W successfully sensed and maintained the membrane depth of a vacuum-membrane solar dish facet within a required ±2 mm limit.
The linear displacement sensor with the compact control system at a total cost of USD 80 and power consumption of 3.3 W successfully sensed and maintained the membrane depth of a vacuum-membrane solar dish facet within a required ±2 mm limit.
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