Electric power

About: Electric power is a research topic. Over the lifetime, 73036 publications have been published within this topic receiving 636991 citations.

An integrated fast battery charger for Electric Vehicle

Abstract: Under the requirements of reducing emissions, air pollution and achieving higher fuel economy, companies are developing electric, hybrid electric, and plug-in hybrid electric vehicles. However, the high cost of these technologies and the low autonomy are very restrictive. In this paper a new concept of fast on-board battery charger for Electric Vehicles (EVs) is proposed which uses the electric motor like filter and the same converter for charging and traction mode.

Source Energy and Emission Factors for Energy Use in Buildings (Revised)

Abstract: This document supports the other measurement procedures and all building energy-monitoring projects by providing methods to calculate the source energy and emissions from the energy measured at the building Energy and emission factors typically account for the conversion inefficiencies at the power plant and the transmission and distribution losses from the power plant to the building The energy and emission factors provided here also include the precombustion effects, which are the energy and emissions associated with extracting, processing, and delivering the primary fuels to the point of conversion in the electrical power plants or directly in the buildings

Apparatus, system, and method to manage the generation and use of hybrid electric power

Abstract: An apparatus, system, and method are disclosed to manage the generation and use of hybrid electric power. A monitoring module 202 receives signals from one or more sensors 116. The signals comprise power level information of an electric energy storage device, power level information of one or more energy converters 102/104, and power level information of an electric load. A determination module 204 compares the signals to determine whether electric power from the energy converters 102/104 satisfies the electric load. A regulation module 206 adjusts the electric power from the energy converters 102/104 in response to a determination by the determination module 204 that the electric power from the energy converters 102/104 does not satisfy an electric load threshold.

Past, Present, and Future Challenges of the Marine Vessel’s Electrical Power System

Abstract: The evolution of the use of electricity in marine vessels is presented and discussed in this paper in an historical perspective. The historical account starts with its first commercial use in the form of light bulbs on the SS Columbia in 1880 for illumination, going forward through use in hybrid propulsion systems with steam turbines and diesel engines and then transitioning to the present with the first fully electric marine vessel based entirely on the use of batteries in 2015. Electricity use is discussed not only in the light of its many benefits but also of the challenges introduced after the emergence of the marine vessel electrical power system. The impact of new conversion technologies like power electronics, battery energy storage, and the dc power system on overall energy efficiency, power quality, and emission level is discussed thoroughly. This paper guides the reader through this development, the present and future challenges by calling attention to the future research needs, and the need to revisit standards that relate to power quality, safety, integrity, and stability of the marine vessel power system, which are strongly impacted by the way electricity is used in the marine vessel.