5 More Physics Equations Everyone Should Know

In January I wrote a piece titled “ 5 Physics Equations Everyone Should Know .” Lots of you weighed in with your own ...
Quanta Magazine

New Math Revives Geometry’s Oldest Problems

Using a relatively young theory, a team of mathematicians has started to answer questions whose roots lie at the very ...

Not Spiral. Not Elliptical. So What Exactly Is This Galaxy?

NGC 2775, a galaxy 67 million light-years away, is puzzling astronomers with its mix of traits. The Hubble Space Telescope has released a new Picture of the Week, and this time the spotlight is on a ...
IEEE

New Active Capacitor Voltage Balancing Method for Flying Capacitor Multicell Converter Based on Logic-Form-Equations

Abstract: This paper presents a new active capacitor voltage balancing control method for the flying capacitor multicell (FCM) converters which is fully implemented using logic-form equations. The ...
IEEE

Modeling and Analysis of State Differential Equations of Grid-Forming DFIG System Considering Taylor Expansion’s Second-Order Nonlinear Terms Based on Normal Form Theory

Abstract: This paper takes the two-machine and two-zone doubly-fed induction generator system as the research object. And each machine adopts the voltage and current double loop virtual synchronous ...