Solar tracker system
DCFirst Claim
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1. A photovoltaic system, comprising:
- a collection of photovoltaic modules;
a base supporting the collection of photovoltaic modules; and
a damper coupled between the collection of photovoltaic modules and the base and resisting movement of the photovoltaic modules relative to the base, the damper having a first damping ratio when the collection of photovoltaic modules moves at a first rate relative to the base and a second damping ratio when the collection of photovoltaic modules moves at a second rate relative to the base, wherein the damper passively transitions from the first damping ratio to the second damping ratio;
the second damping ratio being greater than the first damping ratio; and
the damper comprising;
a damper chamber containing a fluid; and
a damper piston movable through the fluid inside the damper chamber, the damper piston including;
a first port;
a second port; and
a valve, configured to passively open or close the second port.
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Abstract
A photovoltaic system includes a collection of photovoltaic modules, a base supporting the collection of photovoltaic modules, and a damper coupled between the collection of photovoltaic modules and the base. The damper resists movement of the photovoltaic modules relative to the base. The damper has a first damping ratio when the collection of photovoltaic modules moves at a first rate relative to the base and a second damping ratio when the collection of photovoltaic modules moves at a second rate relative to the base, and the damper passively transitions from the first damping ratio to the second damping ratio.
14 Citations
20 Claims
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1. A photovoltaic system, comprising:
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a collection of photovoltaic modules; a base supporting the collection of photovoltaic modules; and a damper coupled between the collection of photovoltaic modules and the base and resisting movement of the photovoltaic modules relative to the base, the damper having a first damping ratio when the collection of photovoltaic modules moves at a first rate relative to the base and a second damping ratio when the collection of photovoltaic modules moves at a second rate relative to the base, wherein the damper passively transitions from the first damping ratio to the second damping ratio; the second damping ratio being greater than the first damping ratio; and the damper comprising; a damper chamber containing a fluid; and a damper piston movable through the fluid inside the damper chamber, the damper piston including; a first port; a second port; and a valve, configured to passively open or close the second port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A photovoltaic system, comprising:
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one or more photovoltaic modules; a base coupled to the one or more photovoltaic modules and supporting the photovoltaic modules; an actuator coupled to the one or more photovoltaic modules and configured to move the photovoltaic modules to dynamically change an angle of the one or more photovoltaic modules with respect to the base; and a damper coupled between the photovoltaic modules and the base and resisting movement of the photovoltaic modules relative to the base, the damper having a first damping ratio and passively transitioning to a second damping ratio that is greater than the first damping ratio; the damper comprising; a damper chamber containing a fluid; and a damper piston movable through the fluid inside the damper chamber, the damper piston including; a first port; a second port; and a valve, configured to passively open or close the second port. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A photovoltaic system, comprising:
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a collection of photovoltaic modules; a base supporting the collection of photovoltaic modules; and a damper coupled between the collection of photovoltaic modules and the base and resisting movement of the photovoltaic modules relative to the base, the damper having a first damping ratio when the collection of photovoltaic modules moves at a first rate relative to the base and a second damping ratio when the collection of photovoltaic modules moves at a second rate relative to the base, wherein the damper passively transitions from the first damping ratio to the second damping ratio; the damper comprising; a damper chamber containing a fluid; and a damper piston movable through the fluid inside the damper chamber, the damper piston including; a first port; a second port; and a valve, configured to passively open or close the second port; wherein the second damping ratio is higher than the first damping ratio.
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20. A photovoltaic system, comprising:
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a collection of photovoltaic modules; a base supporting the collection of photovoltaic modules; an actuator coupled to the photovoltaic modules and the base, the actuator moving the photovoltaic modules relative to the base to maximize energy captured; a damper coupled to the photovoltaic modules and the base, the damper damping movement of the photovoltaic modules relative to the base; the damper comprising; a damper chamber containing a fluid; and a damper piston movable through the fluid inside the damper chamber, the damper piston including; a first port having a first diameter; a second port having a second diameter, the second diameter larger than the first diameter; and a valve, configured to passively open or close the second port.
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Specification