Reactive Power (VAR) Compensation using Photovoltaic (PV) Inverter Assignment

Reactive Power (VAR) Compensation using Photovoltaic (PV) Inverter - Assignment Example The error is sent via PI controller and summed to the grid’s voltage in order in order to get a voltage amplitude equivalent to that of the inverter. Active power generated by the inverter is compared with reference active power signal to produce error. Error passes via PI controller, giving rise to a loading angle. This loading angle is then summed to grid’s voltage phase angle, hence resulting to an increased inverter phase angle. The Phase Locked Loop will still recognize the fundamental positive sequence of the source voltage even at the worst cases scenarios of voltage harmonic distortion.   At these conditions, the active filter absorbs balanced and sinusoidal currents from the source, which are in phase with corresponding fundamental positive sequence of the source voltages. The development of this regulation structure for active power filter is employed when combining with other structures that are to be connected in dc link bus. The structures are static converters that are capable of exchanging active power between an energy source or an energy storage device (capacitor at night). The inverter easily transfers this active power to the grid.   A Power Conditioner with energy storage capability is a viable solution in improving the reliability and the qual ­ity of an electric energy supply. There are several tasks that are performed at a single time, for example current harmonic reduction, smoothing of pulsating loads and reactive power com ­pensation. Moreover, the Power Condioner should work as Uninterruptible Power Supply (UPS) at a short time during interruptions of the grid supply. The Power Compensator is a flexible that is coupled to energy storage device like supercapacitor and battery. At the inverter’s dc side, there is a capacitor that stabilizes proper voltage level for better operation of the inverter that acts current source. The rectifier delivers dc power

Discussion Essay Example | Topics and Well Written Essays - 250 words - 95

Discussion - Essay Example polyandry, children born are said to descendants of the eldest brother alone while in non-fraternal polyandry fatherhood is determined through a ceremony. In other cases, the children are said to have descended from all the husbands. I find this type of marriage unusual and unethical. This form of marriage does not have ways through which the fatherhood of the children can be determined. I find it hard that men can share a common wife without constantly fighting. It is practiced by the Tibetan, Marquesan, Toda and Sherpa societies. This form of marriage is believed to create family unity which is important if the family is seeking or wants to maintain its social economic status since all property and land is owned by the family as a whole. The brothers are believed to live harmoniously if they share a common wife. In a woman’s point of view, there is a sense of security due to the fact that all the husbands will struggle to fend for the

Finance and Financial Management assignment Example | Topics and Well Written Essays - 1500 words

Finance and Financial Management - Assignment Example hat; organization is a place where in different departments work together in order to contribute in the long run productivity of the company as a whole (Lauby, 2005). Among number of departments work in an organization, the name of finance department is one of them, which has its own recognition and importance from the standpoint of a company as it deals with the management of the funds of the company as a whole. Among different functions and operations, usually initiated by the finance department, the name of capital budgeting is one of them. The main theme of this paper is to analyze the capital budgeting stance of the company, mentioned in the case study as a whole. There are total four questions that require being answered accordingly in this particular report. The essence of investment is extremely important from the viewpoint of an organization and there are number of methods from which an organization can analyze the stance of investment as well as appraisal in a perfect and efficient manner. Under the nose of Investment Appraisal, the name of methods like NPV, IRR, Payback and PI comes heavily and each and every method has its recognition and importance as far as analyzing the competitiveness is concerned. Mentioned below table is showing the cash flow which would have been generated by Bodmin Plc by considering the above cost benefit analysis. Net Present Value (NPV) is one of the most important methods, used for the purpose of Capital Budgeting (Lawrence J. Gitman, 2008). Net Present Value analyzes the future cash flow at the present time. The table of NPV is mentioned below, Internal Rate of Return (IRR) is yet another important methods that use in the process of capital budgeting. IRR is a point where in the future cash flow of a project or a company becomes zero (Bryman A, Bell E, 2007). Apart from the NPV, this particular method also used heavily by the companies and the analysis is mentioned below, A method that analyzes the efficiency of a

Theory and Practice of Group Counseling Essay Example | Topics and Well Written Essays - 2250 words

Theory and Practice of Group Counseling - Essay Example By using theories, we attempt to explain, predict, and master. Generalizations and models come from the observations and this comprises of theories. (Theory, 2008.) Throughout the years, literature and studies regarding the disadvantages and manifestations of the group mind are consistent. Studies reveal that the descriptions and estimates of the group mind are undisputed. However, other areas of the group mind must be examined. Group Psychology and the Analysis of the Ego (1951, page 32) reports, "There is no doubt that all the phenomena of the group mind which have just been mentioned have been correctly observed, but it is also possible to distinguish other manifestations of the group formation, which operate in a precisely opposite sense, and from which a much higher opinion of the group mind must necessarily follow." What has not been agreed upon is a question that still remains unanswered and according to Group Psychology and the Analysis of the Ego that concern is, "...how much the individual thinker or writer owes to the stimulation of the group in which he lives, or whether he does more than perfect a mental work in which the others ha ve had a simultaneous share." This book also refers to McDougall, author of The Group Mind. ... McDougall states, "On the whole, therefore, it is not so remarkable that we should see an individual in a group doing or approving things which he would have avoided in the normal conditions of life; and in this way we may even hope to clear up a little of the mystery which is so often covered by the enigmatic word 'suggestion'". (Page 23.) His theory is that the most crucial part in a group is the "exaltation or intensification of emotion" produced in every member of (the group)". (Page 24.) The group gives the individual a sense of unlimited power and replaces the human society, thus the individual will do and approve of things that he/she normally would not do. This theory does, however, state that in a group the minds with lower intelligence bring down the minds of higher intelligence to their level. Lebon states that McDougall's theory goes against a highly organised group's behaviour so he lists five "principal conditions" that must take place in order to raises a group's mental level: 1. There should be some degree of continuity of existence (either material or formal) in the group. 2. In the individual member of the group some definite idea should be formed of the nature, composition, functions and capacities of the group. From this he/she may develop an emotional relation to the group as a whole. 3. The group should be brought into interaction (perhaps in the form of rivalry) with other groups similar to it but differing from it in many respects. 4. The group should possess traditions, customs and habits, and especially such as determine the relations of its members to one another. 5. The group should have a definite structure, expressed in the specialisation

The New Deal and Second New Deal Research Paper

The New Deal and Second New Deal - Research Paper Example The deal sought to relieve people from unemployment, and those who were at risk of losing homes and farms, business and agricultural recovery, as well as introducing reforms, particularly via the introduction of the vast TVA (Tennessee Valley Authority). However, the impacts of the New Deal had to take time since about thirteen million Americans were jobless by 1933. Additionally, banking industry had been shuttered. Body Herbert Hoover Although President Herbert Hoover introduced the New Deal, he lost the presidency to Franklin D after the 1932 election. Blames were raised concerning Hoover’s irresponsibility which led to the crashing of the stock market as well as causing depression. Franklin mightily opposed legislation of the New Deal via which the federal government worked with assumptions. These assumptions concerned the responsibility regarding the national welfare done by assuring high-level activities of the economy. According to Hoover’s critique, Roosevelt to ok long to reveal programs behind the New Deal during the campaign for the presidency, and was concerned that the newly come president would risk sinking America into deficit spending at the expense of the New Deal. There was consultation done between Roosevelt and Hoover, nor did Roosevelt involve Hoover in government at all while he was still the president. The "Hundred Days" President Hoover called for a unique session of Congress which happened on March 9. Promptly, Hoover started submitting reform as well as measures for recovery validation to be done through congressional. Almost every bill proposed by president Hoover got enacted by Congress. The 99-day session, counted from 9th March to 9th June was referred to as the "Hundred Days." The â€Å"Second Hundred Days" Additionally, Congress enacted a number of important reform and relief measures in 1935 — sometimes referred to as the â€Å"Second Hundred Days.† Some of the measures enacted within this Second Hund red Days included: a unified resolution to forsake the 5th June gold standard; National Employment System Act by 6th June which sought to generate the employment service for America; Home Owners Refinancing Act by 13th June, in order to create the Home Owners Loan Corporation (HOLC) with an intention of refinancing non-farm mortgages; Glass-Steagall Banking Act of 16th June 16, aiming to support varying reforms in the banking industry.  

What is Android Research Paper Example | Topics and Well Written Essays - 1750 words

What is Android - Research Paper Example phones and gadgets. In This way many forces have emerged that introduced open source softwares and operating systems that gave a total new shape to the world of communications and hand held devices. One of them in this field was Android .Android is an open source operating system that is widely in use in smart phones and portable computers in form of laptops and tablets. Android came into existence in the early years of first decade of current century when number of proponents sat together and decided on introducing a platform that would compete the existing players . Andy Rubin and Nick Sears are considered as the founders of this innovation. According to them, their aim was to create that would meet the customers’ requirements in a better and more efficient way. Their initial logo at that time can be termed as â€Å"smarter mobile devices that are more aware of its owner’s location and preferences â€Å".... Different versions are available in the market. Various versions exist in the market and number of updates and new applications have been introduced over the period of time each aiming to bring about more advancements and improvement and user friendly features into the setup. Few of the recent releases include 2.3 Gingerbread, 3.0 Honeycomb, and 4.0 Ice Cream Sandwich .3.0 honey Comb was focused on Tablet while the 4.0 version brought more advancements to the smart phone platform. Salient features of the operating system include connectivity of almost all sorts ranging from GSM TO WIMAX; In case of media support it supports large number of video and audio formats ranging from H.264 to MPEG-4,MP3,MIDI.other features include multi touch support, multi-tasking, Global Positioning System . Although the previous year (2010) saw Android as the most dominant force in the market of smart phones and tablets, it cannot be termed as a perfectly smooth sail and Android does face certain problems in form of vulnerabilities, competition, improvements. The updates are termed are tedious and when compared to other platforms they are belived to give the customers a tough time while upgrading to any latest version.To some people Android doesn’t invest into the customer awareness in case of the new releases and hence awareness and customer guidance is found missing in case of new versions being released . The issue of Malware poses a serious threat to the integrity of Android as the best platform for the smart phones and tablets, and recently Google had to withdraw couple of Applications from market due to the reason of malware induced .Google in this regard has setup security teams that look into the matters and make sure

Controversial Subject Rebuttal Essay Example for Free

Controversial Subject Rebuttal Essay On August 29, 2005, the Gulf Coast was struck with one of the most unforgettable natural disasters in American History. The effects of Hurricane Katrina have been shattering and long-lasting. However, could the question been plausibly raised whether or not to rebuild New Orleans? Evidently it was. Lance Winslow, freelance writer, from California did just that in an article titled: Why did God Destroy New Orleans with Hurricane Katrina? Winslow states â€Å"Many people believe that God was real angry at mankind and got a wild hair up his butt and sent Hurricane Katrina into the Gulf Shore and New Orleans to teach people a lesson†¦and if it was a lesson did the little human learn anything? It appears they did not. Humans in their ultimate defiance are rebuilding the city under sea level as before† (Winslow, n. d. ). Winslow included no resources or data to back his opinion. There can be no reliability or credibility attached to this article; however; for those who have been victims of Hurricane Katrina these words create an emotional anger, which is verbally indescribable. Loss of personal possessions are only one aspect of devastation, but the loss of homestead, life as it once was, people and places, which once represented home, and the cultures that make each person a unique individual are characteristics that can never be replaced. History and People of New Orleans Historically the people who inhabited early New Orleans came from many groups including Native American, French, African, and Caribbean islands. No group was dominant in the early days and there was a mixing of the cultures. From this mixing came a unique culture that influenced food, music, architecture, and language. New Orleans became one of Americas’ most unique cities with its multicultural influence and it joie de vivre (joy of life) attitude (A Brief History of New Orleans, n. d. ). The Act of God In the Acts of God department: the catastrophe in New Orleans is the result of human error, not divine malice. Hurricane Katrina’s winds and rain were naturally disastrous, there is no question. However, the massive and catastrophic destruction that affected this beloved city was a result of flooding that occurred because of the failure of the levees. The primary responsibility for that tragic turn of events, and for fixing it, lies directly with the U. S.  Army Corps of Engineers, who have admitted as much (Piazza, 2006) . Anyone that asks the question should New Orleans be rebuilt needs to consider, what happens to the people in San Francisco when it gets destroyed again by an earthquake? Should the government tell them, Sorry, you should have not built on a fault line. What will be done when Los Angeles is ravaged by wildfires and mudslides? How should the government proceed in helping other citizen’s homeland or any other national treasure? Economic Reasons Those who argue the question whether to rebuild New Orleans also fail to consider the costs associated with abandoning New Orleans. The country would suffer economically with its abandonment: more than 500 million tons of cargo comes through the port of New Orleans each year, and 13% of the imported petroleum enters the United States through the Louisiana Offshore Oil Port (Villere, n. d. ). Certainly anyone who relies on the import and export of grain, textiles, hard or dry goods of any sort, electronics, and automobiles, which is to say anyone in the United States, depends on the health of New Orleans as a port. Anyone who uses petroleum products should recognize the importance of New Orleans and Louisiana in general to supply oil. It would be amiss to forget to mention that the Gulf Coast is second only to Alaska as a source of seafood (Piazza, 2006). For those who have taken this attitude, it sounds as if they are just writing off the United part of the United States. To paraphrase Ben Franklin, â€Å"We must all hang together or we will certainly hang separately. † President George W. Bush on September 16, 2005, while standing in Jackson Square, in the heart of the French Quarter, stated â€Å"All who question the future of the Crescent City need to know: There is no way to imagine America without New Orleans and this great city will rise again† (Taipei Times, 2005) .