The multilevel inverters performing power conversion in multiple voltage steps to achieve better power quality, lower switching losses, higher electromagnetic compatibility, and superior voltage capability. Multilevel Inverter (MLI) provides high power capability, with low output harmonics and low commutation losses. In industries multilevel inverter are widely applicable in large number of applications. The paper proposed a new multilevel inverter structure with low output harmonics. In this paper the number of switching device is less as compare to the conventional multilevel inverter. It consists of an H-bridge inverter which produces multilevel output voltage by switching DC voltage sources in series and parallel. This topology produces a significant reduction in the number of power devices. The present topology achieves 44% reduction in the number of main power switches as compared with the basic MLI topologies. This advance topology generates large number of voltage levels with the minimum number of switches. The proposed topology also reduces the total harmonic distortion (THD...
Using MATLAB /SIMULINK software model of single-ended primary inductance converter (SEPIC) with magnetic coupling modeled and simulated. The parameters for preferred converter with magnetic coupling are shown in
UPS is a cargo company based in the USA that was first founded in 1907. It has since grown into one of the largest delivery company and delivers to more than 220 countries around the world. In 1975, UPS first embarked on its international ventures by moving into Canada and Germany in the following year. As UPS began to engage in more international operations, it became clear to the company that the need for an independent and self-sustainable airline had become a serious concern. By 1988, UPS provided route network to 41 countries, extending to Asia, Europe, and America. UPS Airlines was found not long after to negate the use of commercial flights and minimize legislative requirements (UPS Pressroom, 1975).
Lincoln Electric is the global market leader of the highest quality welding, cutting, and joining product. As stated in their Vision statement found on Lincoln Electric’s website. Lincoln Electric was founded by brothers James and John Lincoln. Starting out with an initial investment of only $200 and an innovative idea, Lincoln Electric is proud in saying that have been around for well over a century and still thrive as being the best in the business. That is because of the values Lincoln Electric was founded on in the 1800’s that have been carried on and continuously applied in their company today.
Next plc sells products for men, women and children. There are about 700 Next stores: most of them (more than 500) are located in the UK and Ireland and around 200 stores are situated in Europe, Asia and even in the Middle East. It also has an online store and many international franchises . Next is considered to be the largest clothing retail company in the UK (according to the sales numbers provided by Bloomberg and Telegraph ). Moreover, the company has been listed on the LSE (London Stock Exchange) and on the FTSE (Financial Times Stock Exchange) 100 Index .
According to the modern way of life the need for computer in every work place and home is high which decreases even more the power of the customers. However, the switching costs are low (2.2)
Determining the Approximate Equivalent Circuit of a Single-Phase Transformer AIM --- To determine the approximate equivalent circuit of a single-phase transformer. OBJECTIVE --------- To write up a lab report that will determine the equivalent circuit of a single-phase transformer, using open load test, short circuit test and the load test. EQUIPMENT --------- · TecQuipment electrical machines teaching unit NE8010 or NE8013
Demand for energy continues to rise unabated, so it is essential now to introduce alternative methods to produce electric energy to secure or energy future. Different methods are available to renewable the energy and meet the needs of population but security of health and income should be priority.
This paper presents coupled inductor interleaved boost converter with LC filter for ripple free current. Based on the conventional coupled inductor interleaved boost converter, two coupled inductor and two LC filter is added to the proposed converter .So the proposed converter achieves reduced input and output current ripple. Hence the ripple ratio of input and output current is reduced. In order to verify that, a proposed converter of 12v input voltage and 24v output voltage operating at 50 khz is constructed. And simulations are verified by using MATLAB Simulink. So the ripple free proposed circuit is used for various photovoltaic applications.
DC to AC converters converts the DC current into AC current. These converters have many applications few of them are listed below. Adjustable speed drives (ASD), uninterruptable power supplies (UPS), active filters, Flexible AC transmission systems (FACTS), voltage compensators, and photovoltaic generator.this is classified into two types: voltage source
Gate is patterned with i-line lithography and reduced from 0.5 to 0.04 m with resist ashing and oxide trimming.
[13] Power Electronics and Machines in Wind Applications (PEMWA), 2012 IEEE , Issue Date: 16-18 July 2012 , Written by: Arnedo, Luis; Dwari, Suman; Motapon, Souleman; Blasko, Vladimir
Rectifiers convert an AC into a DC by allowing a current to flow through it in one direction only. There are two kinds of rectifiers,
Transport exporters are looking for alternative ways to keep human mobility. Gasoline is widely used in motor vehicle. Beside gasoline there is another alternative fuel such as E85, natural gas, compress natural gas, liquid petroleum gas, propane is used as substitute fuel to cut dependence on gasoline. Vehicle makers are putting a billion dollars searching for alternative fuel. Therefore, fuel cells could be a potential candidate for alternative fuel. When considering fuel cell, hydrogen cell is coming in the battlefront. This paper will be explained what is reason behind hydrogen cell to be considered future alternative fuel for the vehicle.
The induction motor takes a huge part of the industry, as they are introduced in everyday applications for example, toys, water pumps, fans, washing machines and cars. The reason that the three phase induction motors are very popular is due to the simplicity of the mechanisms included, low cost availability, low risk of failure, economical and can produce large torques. Other reason that the three phase induction motor is widely used is that it can be easily handled and easily fabricated to suit all kinds of applications, the three phase induction motors can be manipulated to produce high or low torques and high or low speeds.
Imagine getting into your automobile. You are running slightly late to work. You notice that there is traffic on the interstate, but you also need gas. There is a gas station on the back way to work. That route will add another 10 minutes. Plus having to fill the car up at the gas station on the way there. On the way you saw an ad for the brand new turbocharged version of your naturally aspirated lemon. Forced induction engines are superior to naturally aspirated engines because they provide more horsepower, better fuel economy, and control engine emissions with a higher quality. Why make being late to work take longer? When you can cut that time down with a forced induction engine.