Tropical feedback loop: Butterfly mimicry patterns evolve faster near the equator

In the early 1990s, Keith Willmott and a friend, both undergraduate students from the United Kingdom, arrived in Ecuador with ...
IEEE

A Novel Magnetization State Control Method Utilizing Torque Deviation for Variable Flux Memory Motor

Abstract: In this paper, a novel magnetization state (MS) control method is proposed by utilizing torque deviation for variable flux memory machine. Firstly, the relationship between the MSs and the ...
IEEE

Virtual Inductance and DC Boosting Control Based Low Voltage Ride-Through Method for Doubly-Fed Variable-Speed Pumped Hydro Storage Units

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 ...