Power semiconductor switches undergo degradation due to environmental and electro-thermal stresses resulting in an impedance variation within the device. This impedance variation can be characterized ...

This paper proposes a generalized and efficient power-flow algorithm for islanded hybrid ac/dc microgrids. The algorithm considers the microgrid operational aspects, i.e., absence of a slack bus, ...

The decision by the Supreme Court to bar judges from issuing universal injunctions to block government actions comes as other constraints on President Trump’s power have eroded. Haiyun Jiang/The ...

The severe weather threat in the Philadelphia region is over, but the storms knocked out power for thousands in the Delaware Valley on Thursday night.