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Questions and Answers
What is the main advantage of a vertical-axis wind turbine (VAWT) in terms of positioning?
What is the main advantage of a vertical-axis wind turbine (VAWT) in terms of positioning?
- The VAWT can achieve higher rotational speeds compared to horizontal-axis wind turbines (HAWT)
- The turbine can harness wind from any direction without the need for orientation mechanisms
- The blades experience reduced bending moments due to the transverse rotor shaft
- The generator and gearbox can be located close to the ground for easier service and repair (correct)
What was a major drawback of early vertical-axis wind turbine (VAWT) designs?
What was a major drawback of early vertical-axis wind turbine (VAWT) designs?
- Significant torque ripple during each revolution (correct)
- Limited rotational speed compared to horizontal-axis wind turbines (HAWT)
- Inability to harness wind in disturbed flow-fields
- Excessive noise generation during operation
What design improvement addressed the torque ripple issue in VAWTs?
What design improvement addressed the torque ripple issue in VAWTs?
- Increasing the length of the rotor shaft
- Adding more blades to the turbine
- Using lighter materials for the blades
- Sweeping the blades helically (Gorlov type) (correct)
Why are Savonius VAWTs considered a good alternative for distributed generation devices in an urban environment?
Why are Savonius VAWTs considered a good alternative for distributed generation devices in an urban environment?
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What feature distinguishes a vertical-axis wind turbine (VAWT) from a horizontal-axis wind turbine (HAWT) in terms of wind direction?
What feature distinguishes a vertical-axis wind turbine (VAWT) from a horizontal-axis wind turbine (HAWT) in terms of wind direction?
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