Found 3977 related files. Current in page 1
Insurance implies preparing for the future’s needs and exigencies. While every person or company still has the resources and the energy to raise ample funds, investing in the future through insurance coverage can be one of the wisest decisions to make. But not every insurer has the expertise to provide you with excellent coverage. AXIS Group Insurance is one of the few excellent companies which many have learned to trust.
http://www.betincasino.com - With literally thousands of online casinos on the web, it can be difficult to find the one that's right for you. BetinCasino.com is a great online casino finder that works to make your decision just a little bit easier. With a database of international casinos, It allows you to compare top online game sites or use specific criteria to find the one that suits you best.
Deco Digital LED lighting is more energy efficient, more versatile, and longer-lasting than traditional lighting options. Call (800) 613.DECO for more info about LED lighting.
There is no dearth of learning programs out there. However, it is only wise to select a course which complies with your interests and expectations from a job. It works the same way as the regular courses do. You will not really be able to excel either in your professional or academic sphere if you have not chosen something which interests you. A half hearted choice is hardly going to work for you here! So think wisely and select a course.
The output frequency of a self excited induction generator (SEIG) driven by wind turbine and supplies static load are controlled, using MATLAB/simulink. The PID controller which employed for turbine rotor speed control and hence the frequency regulation is proposed and simulated by MATLAB software package. The modern wind turbines implement pitch control in order to tap maximum energy at wind speeds lower than rated wind speed. They are simple and rugged in construction and offer impressive efficiency under varying operating conditions. The PID controller which employed for turbine rotor speed control and hence the frequency regulation is proposed. In this paper, a turbine blade pitch control has been assumed for this purpose.
This paper presents the design and construction of charge controller for wind energy source. The charge controller is a small prototype that is suitable to charge small battery. The maximum charging current of the charge controller is about 7 A. The charge controller is designed using PIC 16F877A microcontroller, liquid-crystal display (LCD), silicon-controlled rectifier (SCR), rectifier diodes and other electronic components. The SCR and rectifier diodes in conjunction with other components are used to charge the battery. The battery charging is controlled by the microcontroller circuit. The LCD module displays the status of the battery while it is charging. At the same time the voltage level of the battery is also displayed. The microcontroller controls the charging circuit and diverted the charging current to the diverted load if the battery is fully charged. The microcontroller also produces signal to the audible alarm circuit in the case of full charge battery.
Three-fourths of the world’s energy is consumed in cities and more than half of it is consumed in buildings. The construction sector is one of the most traditional & cost oriented industries and it makes much sense to bring innovations that are environmentally and economically sustainable. Sustainability in the construction sector or in other words green buildings are mainly focused on the reduction of emissions, construction of energy efficient houses and maintaining thermal comfort of the occupants. However we can further innovate to excel in terms of zeroed environment impacts and resource optimization. To comprehend the innovations which have happened in green buildings, this study entitled “Innovations in Design- A Study of Green Buildings” was conducted. It focuses on technologies and strategies used and catalysts and hindrances faced while adopting Innovation category in green buildings certified under the prevalent green rating systems in India i.e.
Due to the rapid technological progress, the consumption of electric energy increases continuously. But the transmission systems are not extended to the same extent because building of new lines is difficult for environmental as well as political reasons. Hence, the systems are driven closer to their limits resulting in congestions and critical situations endangering the system security. Power Flow Control devices such as Flexible AC Transmission Systems (FACTS) provide the opportunity to influence power flows and voltages and therefore to enhance system security, e.g. by resolving congestions and improving the voltage profile. Several kinds of FACTS controllers have been commissioned in various parts of the world. This paper presents various types of FACTS devices such as: load tap changers, phase-angle regulators, static VAR compensators, thyristorcontrolled series compensators, interphase power controllers, static compensators, and unified power flow controllers.
- In the micro-grid system, it is particularly complicated to maintain the critical load with continuous power supply. The proposed micro-wind energy conversion system with battery energy storage is used to exchange the controllable real and reactive power in the grid and to sustain the power quality norms at the point of common coupling. The generated microwind power can be stored in the batteries at low power demand hours. In this scheme, inverter control is executed with hysteresis current control mode to achieve the faster dynamic switchover for the support of critical load. The combination of battery storage with micro-wind energy generation system (μWEGS), which will synthesize the output waveform by injecting or absorbing reactive power and enable the real power flow required by the load. The system reduces the burden on the conventional source and utilizes μWEGS and battery storage power under critical load constraints. The system provides rapid response to support the critical
This paper proposes a unique standalone hybrid power generation system, applying advanced power control techniques(APC), fed by four power sources: wind power, solar power, storage battery, and fuel cell, and which is not connected to a commercial power system One of the primary needs for socio-economic development in any nation in the world is the provision of reliable electricity supply systems. This work is a development of an indigenous technology hybrid Solar –Wind and fuel cell Power system that harnesses the renewable energies in Solar- Wind and fuel cell to generate electricity. Here, electric DC energies produced from photovoltaic and wind turbine systems are transported to a DC disconnect energy Mix controller. The controller is bidirectional connected to a DC-AC float charging-inverter system that provides charging current to a heavy duty storage bank of Battery and at the same time produces inverted AC power to AC loads. This paper focuses on the modeling and simulation