large conduction losses. A resonant inductor is placed in the switched capacitor circuits to limit the peak current and avoid the diode reverse-recovery problem [11, 12]. The small inductor makes the active switch turn on with zero-current switching (ZCS) condition in [11]. When the conversion ratio is large, many switched capacitor stages are required to achieve high voltage gain, which makes the circuit complex and increases the cost. Additional inductors and diodes are placed to extend the voltage gain of the converters, where the inductors are connected in parallel to the charging path and then connected in series to the discharging path [13, 14]. Thus, high duty-cycles are avoided. Also, the switched capacitor technology is used in …show more content…
Even though more than one power processing stage exists, the operation in continuous conduction mode (CCM) may still lead to high efficiency [9]. The main drawbacks in this case are increased complexity due to two sets of active switches, magnetics, and controllers. The controllers must be synchronized and stability is of great concern [10]. Due to high power levels and high output voltage, the latter cascaded boost stage has severe reverse losses, with low efficiency and high electromagnetic interference (EMI) levels. Examples of such converters are the single-switch quadratic boost converter and the two-switch three-level boost converter [11] (19)The basic structure to obtain high boost rate is a cascade converter, which has low efficiency and complexity. Use of cascade of converters for getting the desired voltage ratio is a no-solution in the today’s world, as this procedure implies an overall efficiency equal to the product of the efficiencies of each circuit. To simplify the cascade circuit, the modified converter using one switch has been developed.[2,3] However, it still has the problem in efficiency and cost compared to the cascade
Ewald Georg von Kleist is a German scientist who created the capacitor in November of 1745. Regrettably, Kleist did not have the proper paper work to claim in the records that the design of the capacitor was his idea. Many months later, a Dutch professor named Pieter van Musschenbroek created the Leyden jar, the world’s first capacitor (on record). It was a simple jar that was half filled with water and metal above it. A metal wire was connected to it and that wire released charges. Benjamin Franklin created his own version of the Leyden jar, the flat capacitor. This was the same experiment for the more part, but it had a flat piece of glass inside of the jar. Michael Faraday was the first scientist to apply this concept to transport electric power over a large distance. Faraday created the unit of measurement for a capacitor, called Farad.
Muller, S., Prowse, D. L., & Soper, M. E. (2012, September 25). CompTIA A+ Cert Guide: Power Supplies and System Cooling | Foundation Topics | Pearson IT Certification. Retrieved March 20, 2014, from http://www.pearsonitcertification.com/articles/article.aspx?p=1945640
Do you want your car to pick up speed faster? How about adding a turbo booster on that engine under your automobiles hood. A turbo charger is a very efficient way to gain power. To fully understand the function of this component, lets look at the physics behind it. The Ideal Gas model has much to do in turbo chargers. I will explain the theory and components like the compressor, turbine, intercooler, wastegate, and the BOV.
It was also possible to simulate ED system after the electric resistances of the equivalent circuit were obtained from the analysis of the time course of PaCl. The simulation results agreed with ED data very well.
Littlefield Technologies is a firm that has developed Digital Satellite Systems (DSS) product that has a product life of 268 days. The company’s strategy is to produce the product as per order and when the company has enough cash to pay the suppliers. This means that the company only produces goods as soon as orders are made and when there is enough money to support the production. In order to make this strategy successful, the following criteria should be met:
The United States located electronic company Electrocorp faced the problem of declining profitability due to rising production costs, specifically high wages, costly worker's safety and environmental standards. In order to solve this problem Electrocorp is deciding whether to relocate some of their plants to South Africa, Mexico, or the Philippines.
The major stakeholders in this situation would be Mr. Ed Sampson who is the chairman and president of the Calgary based company. Then there is Mr. Bill Hornaday who is the chief operating officer, The government of Bangladesh who are still in the process of negotiating with the Niko Resource Ltd. The Villagers, the residents of the community who have been affected by these blowouts.
Butler was one of many to be accused of a crime he didn’t commit. In 1993, a woman got
The risk management plan is for Flayton Electronics following their breach in security of their customer’s information. The document provides an explanation and description of the risk management process undertaken throughout the life cycle of this project. The project manger will be responsible for reviewing and maintaining the Project Risk Management Plan. The manager will ensure that all the risk process factors are appropriate to deal with the risks highlighted in the project.
Organizational culture is imperative to the success of the organization. The strength and core values of the organization is supported by the organizational culture. This allows for organization to operate in a specific manner that is specific to that organization and can pave the path for success. Company founders are passionate about their vision and mission and they elude that passion into their employees. When that passion and mission is successfully implied to the employees the company strives in it 's path to success. Founders of companies are the continuing influence for the company to succeed. They pour the foundation of organizational culture so that the vision of their passion is directed in the right path. Organizational culture
Tesla Motors Inc. is an American public company which is known worldwide because of its experience in designing, manufacturing and also the selling of electric cars and electric components for vehicles. The motor was started back in the year 2003 in San Carlos, California in the United States (Teslamotors.com, 2014). The company had its headquarters in Palo Alto and at the time of its inception, Elon Musk was its chief executive officer (CEO) (Hunger, 2010).
Basic Mathematics for Electronics seventh edition: Nelson M. Cooke, Herbert F.R Adams, Peter B. Dell, T. Adair Moore; Copyright 1960
Puri, R., Kung, D., & Stok, L. (2005, May). Minimizing power with flexible voltage islands. In Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on (pp. 21-24). IEEE.
However, it has received a lot of attention due to its ability to reduce the gap between batteries and supercapacitors or potentially, better both capacitors and batteries in terms of power density and energy density. These alone had led manufacturers to explore the many new possibilities to fully harness the advantages supercapacitors can offer. The applications of supercapacitors can be primarily divided into 4 categories, namely energy storage systems, battery improvement systems or peak power boost systems, power smoothing and power factor
In this study, we will be able to determine the difficulties that are encountered by students who are studying Electrical Engineering; how they manage their time, what are their sacrifices just to pass this course, and what kind of lifestyle do they have in order to fit in studying EE.