It also worked as a Bypass capacitor for the LM338K voltage regulator. D. Voltage Regulator Voltage Regulator is a vital part of this circuit. It is one of the main components responsible for fast charging. For this work Voltage Regulator LM338K has been used. Notable features of LM338K are: • 7A Maximum output current • Adjustable output 1.2V to 37V • Current Limit Constant with Temperature • Output is Short-Circuit
The first is to use an optocoupler on the secondary circuitry to send a signal to the controller. The second is to wind a separate winding on the coil and rely on the cross regulation of the design. The first technique involving an optocoupler has been used to obtain tight voltage and current regulation, whereas the alternative approach was developed for cost-sensitive applications where the output did not need to be as tightly controlled but up to 11 components including the optocoupler could be eliminated from the
It removes the ripples from the output of rectifier and smoothens the D.C. Output received from this filter is constant until the mains voltage and load is maintained constant. However, if either of the two is varied, D.C. voltage received at this point changes. Therefore a regulator is applied at the output stage. The simple capacitor filter is the most basic type of power supply filter. The use of this filter is very limited.
Photovoltaic cells, like batteries, generate direct current (DC) which is generally used for small loads (electronic equipment). When DC from photovoltaic cells is used for commercial or sold to electric utilities using the electric grid applications, which must be converted into alternating current (AC) power converters using semiconductor devices that convert DC into the mains. PVS historically they have been used to provide electricity in remote locations. However, a market for distributed PV generation can grow with the unbundling of transmission and distribution costs due to electricity deregulation. The implementation of numerous small-scale generators in electricity distribution feeders could improve the economy and reliability of the distribution
For the PFC operation, the supply current (is) is in phase with the supply voltage (vs). Hence, the input power Pin is given as Pin = √2VsSinωt x √2IsSinωt = VsIs(1-cos2ωt) (5) Where the latter term corresponds to the second-order harmonic, which is reflected in the dc link capacitor
Using wind energy would be the best way to solve the world’s pollution problem that cause by burning of fossil fuel. The reason why I personally think that is the best way to solve the pollution is because the wind energy (wind turbine) only uses wind to produce electricity. Wind energy is plentiful, renewable, clean and produce no harmful gas. The effects to the environment are less problematic than the other nonrenewable energy source. It is also cheaper than coal or burning gas.
In addition, the turbines can make use of generators in converting wind power into electricity. Wind energy is mostly used in the farms. The electric power is transmitted to the users via transmission systems that include towers, substations and electric transmission lines. The biggest challenge of using wind electricity is that it comes and goes and cannot be stored to be used in future. Wind energy requires integration with sources of energy as it is not reliable.
Of all the costs associated with the production of electricity, it is the only one whose control can still have a significant impact on bus bar generation costs after the power plant has been constructed. Fuel selection for electric power generation plays a significant role in establishing the parameters that will be used in designing combustion and pollution control systems of the power plant. A multi fuel power plant can run on multiple fuels like coal, heavy fuel oils, natural gas, biogas and several other fuels. The fuel can be switched freely during operations without any decrease in power output. A multi fuel power plant allows operators to always choose the most economical and readily available fuel.
ABSTRACT In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor. A high power factor is generally desirable in a transmission system to reduce transmission losses and improve voltage regulation at the load. It is often desirable to adjust the power factor of a system near to unity.