Wind Turbines- Wind power, in principle, should be simpler and much less expensive than fossil-fuel power. However, in order to produce a steady voltage and frequency, windmills must compensate for ever-changing wind conditions. This is accomplished through expensive mechanical means such as a 100:1 ratio gearbox, blade-pitch control, in addition to an elaborate coil converter/inverter configuration. These components are at the heart of a wind turbine’s complexity and make up nearly 50% of the price—driving the cost of wind power higher than fossil fuels.
While gearless, wind-turbine designs that are engineered to operate without a high-maintenance gearbox do exist, they require a custom, 13-foot-diameter generator with 86 poles. Consequently, a gearless windmill is more expensive than one with a gearbox. For this reason, they are primarily deployed in offshore installations where marine access for ongoing maintenance on a gearbox is more expensive than on land.
Being an inexpensive, non-mechanical method for handling and converting variable voltage to a steady AC voltage and frequency, the DVC eliminates the need for all of the complex and expensive components now employed in windmills to mitigate
fluctuating wind conditions. With this new technology, a wind turbine of any size would not only be economical, but could directly compete with fossil fuels. Not to mention, the ongoing operations and maintenance would be significantly reduced.
Dynamic Voltage Controller (DVC)
DVC Prototype Videos