AC induction motors are everywhere, from ceiling fans to vehicles. They’re reliable, simple, and rugged — but there are some disadvantages. It’s difficult to control the speed ...

Abstract: DC motors and solenoid starters used in railway industry are susceptible to erosion due to the high current flow in the DC motor circuit, which can cause a melting effect in copper contacts ...

Abstract: Precise operation and control of electric drives in industrial applications, e.g., e-mobility, involve power electronic converters using feedback regulators connected to system state sensors ...

D.C. Police Chief Pamela Smith is leaving her post amid a federal investigation into allegations of manipulated crime statistics. Mayor Muriel Bowser defended Smith, while Smith denied any wrongdoing ...