By Paul Dvorak John Yan, China, sawt.com
Most wind turbines fall into one of two general categories: horizontal axis and vertical axis. Each can be further divided into small and large wind turbines.
Wind turbines can be classified as utility scale and small scale and then into a horizontal axis (HAWTs) and vertical axis versions (VAWTs).
The technology for traditional horizontal axis wind turbines (HAWTs) have been in development for more than a hundred years. This technology includes blades and their manufacturing, gear boxes and their manufacturing technology, pitch angle devices and their technology, and so on. The technologies are very mature. Betz’s Law, which defines
Read Full Article Here
For more great articles: Windpower Engineering & Development