Hammer drills are built to be tough. All that vibrating and pounding takes its tool on low quality tools, so finding a ...

Unicorn-Entrepreneurship explains why founders who retain control outperform better-funded rivals – and how strategic fit, ...

Abstract: This article proposes a novel low-voltage ride-through (LVRT) control strategy for doubly-fed variable-speed pumped hydro storage (VS-PHS) units. Unlike conventional LVRT approaches for ...

VIDAR motors eliminate the need for external VFDs, saving space and reducing installation time from weeks to hours. The embedded technology reduces energy consumption by enabling precise, automatic ...

The low-voltage variable speed drive (VSD) allows variable control instead of fixed-speed operation. These days, VSDs can reduce energy consumption by up to 30% on average—and as much as 80% in ...

October 2025 marks the 50th anniversary of the Low Voltage Variable Speed Drive (LV VSD), which was used in a commercial application for the first time at a sawmill in Finland, in 1975. It was ...

Abstract: This article considers the problem of controller design for a grid-connected wind energy conversion system (WECS) employing a variable-speed permanent magnet synchronous generator (PMSG).

Variable frequency drives (VFDs) offer the best system efficiency in heating and cooling systems, especially if they have an accurate and very wide range of speed control. To obtain truly variable ...

Traffic congestion is a pertinent issue on highways. Variable Speed Limit control can support in avoiding traffic jams before congestion formation. Vehicles upstream are required to decelerate at ...

This short video from [ProShorts 101] shows us how to build a variable speed disc sander from not much more than an old hard drive. We feel that as far as hacks go this one ticks all the boxes. It is ...