Solar tracker system

  • US 10,903,782 B2
  • Filed: 06/17/2019
  • Issued: 01/26/2021
  • Est. Priority Date: 02/13/2018
  • Status: Active Grant
First 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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