This project is about to develop the power converter with improved performance with low voltage and high current dc output.One of the application of low voltage,high current dc output is supercapacitor charger(12V,20A).This paper describes the high frequency(hf) transformer and resonant inverter intended to obtain better efficiency by maintaining the constant low voltage.
Keywords—parallel resonant inverter, Resonating components, High frequency transformer, Leakage inductance, Transfer Function. I.INTRODUCTION Advent of devices with better switching capabilities has enriched the field of power electronics. This enables the development of converter circuits with improved and high performance[6]. The AC-DC
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Owing to higher frequency of operation component sizes get reduced thereby component stress. On the other hand conventional converter was found to have several disadvantages such as bulky size, heavy weight, high di/dt value,high voltage stress,turn on and turn off losses, low efficiency,etc.The above demerits are overcome by high frequency resonant converter. It has numerous advantages such as light weight,higher frequency of operation,high efficiency,small size,fast response,low component stress,less electromagnetic
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
Anyways, I'm going to write this blurb based on the assumption that anyone reading it has grasped the basic concepts of how a turbocharger and supercharger work. Typically, the argument is that a turbo makes more power than a supercharger, which is not entirely true. For instance, the Lysolm (aka "screw-type" Supercharger, known as the PSI in Top Fuel) was the choice of forced induction for Top Fuel cars for years until they were banned for giving an unfair advantage to the cars using it. If it's good enough for Top Fuel, it's good enough to make some pretty good power on a street car. Now, don't get me wrong.
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.
"You can see that it is difficult to say which is better. The main advantages to supercharging are low-end response and simplicity. The main advantages to turbocharging are efficiency and the realization of maximum power. It is up to the vehicle owner to decide which solution is best for him or her" (Turbocharger or Supercharger).
In its essence, expensing is performed whenever you purchase an asset. But the above section showed the limits to this rule. Typically only costs, which have no long-term benefit or which don’t directly increase the value of the asset substantially, are expensed.
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
Standard Air Conditioner There are a number of standard air conditioner systems that are available on the market. One is a unitary system. The one room air conditioners sit in a window or wall opening, with interior controls. A large house or building may have several units, permitting each room to be cooled separately. Another type is the basic central air conditioning unit, which offers whole house-house cooling. It is usually a large, loud, mechanism that sits outside of the home. Although these standard air conditioners may be effective, they come with drawbacks. According to the U.S. Department of Energy, Americans spend $22 billion a year and use more than 183 billion kilowatt-hours of electricity to cool their homes with standard air conditioning. Also those air conditioners release about 100 million tons of carbon dioxide into the air annually -- two tons for each home that has one.
Nuclear power is a relatively new method of supplying the ever growing population with the electricity that is required. Although the majority of people are unsure of how generation occurs, nuclear power provides roughly 17% of the world’s power. (Rich, Alex K...) This makes nuclear power a deciding factor in how the race progresses in technology and energy fabrication as it is able to produce mass amounts of electricity in short periods of time. The limit potential for nuclear power is unclear in not only energy but also weaponry and some medical uses. The fact that uranium and the radioactivity that comes with it are used in facilities and other inventions often lead people to distrust the inventions which, while not entirely un-called for, hinders progress and leads to fables and tales around nuclear energy, its creation, and the nuclear power plants that are springing up around the world. This causes nuclear facilities to slow in their development which only makes things worse because as things progress the facilities will only get increasingly safe as long as they are handled professionally. (Rich, Alex K…) Some of the slanderous fables around nuclear power include things like claiming that nuclear facilities cannot operate during droughts and water shortages. (Kharecha, Pushker…) While nuclear power is accompanied by several risks, it can also be the solution for various global strains and difficulties.
Alternative energy sources are renewable, and is most commonly referred to as free energy sources. There are many alternative energy sources such as hydro power, solar power, wind, biomass, and geothermal. Using alternative sources is more expensive in the long run, but it is the much safer option for our environment compared to fossil fuels. Although everything used is completely free, such as water and wind, the equipment used to generate these things are expensive. There are several pros and cons that come with the utilization of alternative energy sources.
· B-phase transformer (EMTU-TT01) · Feedback electronic wattmeter · Multi-range moving-iron ammeter · Instrument voltage transformer THEORY AND INTRODUCTION ----------------------- Transformers are used all over the world to step-up and step-down electricity. The transformer is one of the most commonly used electrical devices. The reason the transformer is so popular is because they range in size from 240V to well over 240kV, stepping -up and stepping-down electricity all over the world.
...quency and the inductor, V˪=IwL. The inductive reactance is found by multiplying the angular frequency by the inductor (X˪=wL). The amplitude of voltage across the inductor in an AC circuit is the current multiplied by the inductive reactance (V˪=IX˪). Once you have found your voltage amplitudes across the circuit, you are able to find the impedance of the circuit. To find the impedance you take the square root of all squares of the resistor plus (the inductive reactance minus capacitance reactance), Z=√R²+(X˪-Xc)². To find the phase angle you take the arctan of the inductive reactance minus the capacitance reactance divided by the resistor, ϕ=arctan(X˪-Xc)/R. The voltage and current is at its maximum is when they are in phase. To find the power, just multiply the current squared by the resistor (P=I²R). No power is loss occurs in an ideal inductor and capacitor.
Basic Mathematics for Electronics seventh edition: Nelson M. Cooke, Herbert F.R Adams, Peter B. Dell, T. Adair Moore; Copyright 1960
In this paper, I will talk about how AC circuits can be described by considering voltage and current using complex numbers. An AC circuit requires two separate numbers to be able to completely describe it. This is because it takes into account the amplitude and the phase of the current. The fact that complex numbers can be easily added, subtracted, multiplied or divided with each other makes them ideal for this operation where both amplitude and phase have to work together.
Background: The increasing require of electricity, fast exhaustion of fossil fuels, diminution of CO2 emissions, in conjunction with the incapability and ineffectiveness of present electricity grid are motivating chief changes in electricity production, circulation and consumption guides around the globe. In recent times, smart electricity grid configurations comprised with interlinked small or medium dimension generators, energy storage elements as well as power electronic technologies have been germinated to find the key limitations of the conventional grid structure. Microgrids are major ingredients of these promising grid configurations. Even though microgrids are received as feasible solutions to power stability and quality topics in ac power systems, the ambiguity in the capacity of microgrids are to deal with serious changeable load and fault situation is the most important pertain in the function of these novel grid configurations.
Because of the alternating nature of the input AC sine wave, the process of rectification alone produces a DC current that, though unidirectional, consists of pulses of current. Rectifiers have many applications such as power supplies for radio, television and computer equipment, require a steady constant DC current (as would be produced by a battery). In these applications the output of the rectifier is smoothed by an electronic filter to produce a steady current.