Add Yahoo as a preferred source to see more of our stories on Google. FirstEnergy plans to replace electric transmission lines through eight western Pennsylvania counties, including Erie County. In ...

Heater hoses are rubber hoses that circulate engine coolant to and from the heater core, which is the small radiator that provides heat for the cabin. They typically extend from the engine to the ...

Abstract: For the internal control of MMC topologies, degrees of freedom (DOF) that can influence both the transient and steady-state performance are used. Several operation modes, each with a ...

Abstract: A control technique is proposed in this paper for control of modular multilevel converters (MMC) in high-voltage direct current (HVDC) transmission systems. Six independent dynamical state ...