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Wave Energy Converters Designs

Wave energy converters (WECs) are devices designed to harness the power of ocean waves, converting their kinetic and potential energy into electricity or mechanical power. These innovative technologies have the potential to contribute significantly to the global renewable energy mix, providing a sustainable and reliable source of power for various applications. WECs can be categorized into different types based on their operational principles, designs, and deployment strategies.

Types of Wave Energy Converters​

PTO-Based WEC Designs​

The Power Take-Off (PTO) is a crucial component in most wave energy converter designs. It's responsible for converting the mechanical energy generated by the waves into electrical power. There are several PTO-based WECs, including:

  • Point Absorbers: These WECs absorb the energy from incoming waves through a buoy or a floating structure connected to an underwater foundation. The back-and-forth motion is then converted into rotational energy which powers the PTO.
  • Attenuators: Attenuator systems are similar to point absorbers but use arrays of buoys to spread out the force exerted by the waves, reducing the impact on each device and improving efficiency.

Oscillating Water Column (OWC) Designs​

The OWC is another category of WECs. They work by capturing the energy from wave-driven airflow through an air chamber or tunnel, which drives a turbine connected to a generator.

  • Tubular Type: The tubular type OWC uses a cylindrical design where incoming waves push water in and out of the column, driving air out through turbines for power generation.
  • Cylindrical Type: Similar to the tubular type but with a focus on using a cylindrical shape for higher efficiency.

Flapping Devices​

Flapping devices or oscillating bodies are WECs designed to mimic fish motion. They use wave-induced flow to make their flapping or oscillating motions, which in turn drive an underwater turbine connected to a generator.