Technologies. Small Wind Turbines. Voltage Regulation (VRS)

Stable Voltage = Higher Efficiency = Better Economics

Variable Wind Solutions’ patent-pending Voltage Regulation Solution (VRS) represents a breakthrough in high-efficiency, cost-effective voltage regulation and stabilization for wind turbines.

Intended for wind turbines of up to 10 kW rating, the VRS-10 is an electronic card that monitors and responds to alterations in rotor shaft rotation speed - in real-time and virtually immediately - to assure stable voltage output even when changes in wind speeds cause the turbine generator’s RPMs to fluctuate +/- 60% from the generator’s nominal RPM rating.

Competing technologies and methods focus on causing the shaft to rotate at a constant speed [allowing for only a few % variation in RPMs] in order to retain stable voltage output. Indeed, they waste energy by converting rotational force into heat. The VRS solution is unique in that it allows the shaft to rotate at whatever speed the wind blows and still provide stable voltage output, thus taking advantage of all the wind has to offer.

Stable Voltage Output

The VRS-10 for turbines rated up to 10 kW delivers stable voltage output at over 99% efficiency, helping to make the most of each and every gust of wind, no matter what its speed. And as wind speed increases, so does the power output, even as the voltage remains stable.

Optimized for Low and Variable Speed Winds

Even when winds are gusty or low-speed, if the turbine’s blades are spinning, the VRS-10 can deliver stable voltage despite the fact that the generator shaft’s RPMs may be well above or below the generator’s nominal RPM rating.

Reduced Turbine Manufacturing and O&M Costs

With the VRS-10 helping to absorb the stresses typically encountered by the wind turbine’s mechanical and electronic components in low, high, and variable-speed winds, it is now possible to generate clean, reliable electricity across a very broad range of wind speeds, enabling cost-effective operation.

The VRS makes possible turbine capital and O&M cost savings by allowing for the use of more trouble-free power conditioning electronics that operate at higher efficiency, a simpler or even no gearbox, a more robust blade-nacelle connection, and simpler and less expensive blade design.

With Variable Wind Solutions’ VRS-10 10 kW Voltage Regulation Solution, it no longer matters if your turbine is in a rural or urban setting, exposed to high, low, or variable-speed winds. Whatever the case, wind turbines employing the VRS-10 can now be installed in locations with wind regimes previously considered unsuitable, and so help bring clean, reliable energy to more and more people all around the world.

VRS-10 product sheet.pdf

For more information about the VRS, please contact us.