A variable ratio gearbox (VRG) provides discrete variable rotor speed operation, and thus
increases wind capture, for small fixed-speed wind turbines. It is a low-cost, reliable …

A variable ratio gearbox (VRG) can enable small wind turbines to operate at discrete
variable rotor speeds. This reliable, low-cost, alternative does not require power conversion …

Large wind turbines typically have variable rotor speed capability that increases power
production. However, the cost of this technology is more significant for small turbines, which …

Wind is one of the most promising resources in the renewable energy portfolio. Still, the cost
of electrical power produced by small wind turbines impedes the use of this technology …

Variable-speed wind turbines are able to adapt to low wind speeds and therefore have
greater efficiency than fixed-speed turbines during partial-load operation. Unfortunately, the …

The cost of electrical power produced by small wind turbines impedes the use of this
technology, which can otherwise provide power to millions of homes in rural regions …

This paper investigates the performance of a variable ratio gearbox (VRG) used in a small
fixed-speed wind turbine with active blades. The major components of the VRG-enabled …

Wind is considered to be one of the most promising resources in the renewable energy
portfolio. Still, to make wind energy conversion more economically viable, it is necessary to …

The purpose of the authors' research is to develop a variable ratio gearbox (VRG) that
enables discrete variable speed operation for fixed-speed wind turbines in the production …

Small wind turbines are a promising technology that can provide renewable power to rural
and remote communities. In order to increase the efficiency and competitiveness of small …