Electric power

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

Electrical power contacts and connectors comprising same

Abstract: Electrical connectors and contacts for transmitting power are provided. One power contact embodiment includes a first plate that defines a first non-deflecting beam and a first deflectable beam, and a second plate that defines a second non-deflecting beam and a second deflectable beam. The first and second plates are positioned beside one another to form the power contact.

Motor vehicle drive system for a motor vehicle having an electric motor system, and a method of operating said drive system

Abstract: The motor vehicle drive system is for a motor vehicle having an electric motor system, an actuating system, an accelerator system, a mode selector and a battery. The drive system comprises a power supply bus having an output for supplying the electric motor system; a battery connector for connection to the battery, the connector having a power output for supplying the power supply bus; a controller system having inputs respectively for connection to the components of the vehicle so that it can monitor their status; a power converter system connected to the power supply bus of the controller system, and to the motor system for supplying it; a combustion motor electric power supply having an input connected to the controller system, and an output for producing current; a first power converter having an input connected to the power supply, and an output for supplying the power supply bus, the controller system being connected to the power converter so that it is monitored and controlled by the controller system, whereby the controller system monitors and controls operation of the electric motor system and, when auxiliary electric power is needed on the power supply bus, the controller system activates operation of the combustion power supply.

Drive system for turbochargers with rotary electric machines

Abstract: A turbocharger drive system associated with an internal combustion engine includes a plurality of turbo­chargers drivable by exhaust gases from the engine, a plu­rality of rotary electric machines mounted on the rotatable shafts, respectively, of the turbochargers and operable as electric motors or generators, and a single rotary electric machine coupled to the rotatable shaft of the engine. When the engine rotates at a low speed and under a high load, the rotary electric machine coupled to the engine shaft oper­ates as an electric generator to generate electric power to drive the rotary electric machines mounted on the turb­ocharger shafts as electric motors, so that the boost pres­sure is increased to increase the output power of the engine. Since the multistage turbochargers are power-­assisted by the respective rotary electric machines, the boost pressure builds up sharply. When the engine rotates at a high speed, the rotary electric machines combined with the turbochargers generate electric power to drive the rotary electric machine coupled to the engine shaft as an electric motor, thus feeding exhaust energy back to the engine output power.

Electric Power Generation through the Direct Interaction of Pristine Graphene-Oxide with Water Molecules.

Abstract: Converting ubiquitous environmental energy into electric power holds tremendous social and financial interests. Traditional energy harvesters and converters are limited by the specific materials and complex configuration of devices. Herein, it is presented that electric power can be directly produced from pristine graphene oxide (GO) without any pretreatment or additives once encountering the water vapor, which will generate an open-circuit-voltage of up to 0.4-0.7 V and a short-circuit-current-density of 2-25 µA cm-2 on a single piece of GO film. This phenomenon results from the directional movement of charged hydrogen ions through the GO film. The present work demonstrates and provides an extremely simple method for electric energy generation, which offers more applications of graphene-based materials in green energy converting field.