Abstract: The existence of a phase-locked loop (PLL) estimated voltage amplitude-frequency-phase angle coupling phenomenon poses a significant challenge in control of grid-tied renewable energy ...

Bali has once again captured global attention with a major travel milestone for 2026. From breathtaking landscapes to ...

‘Bear Down’: How a songwriter’s challenge became Chicago’s rallying cry Chicago's favorite fight song, "Bear Down," began as bet among songwriters. It ended up being a city's rallying cry. Dr. Ian ...