Acknowledgements The author would like to gratefully acknowledge the guidance and encouragement of Mr. Billy Chow, the Project supervisor who inputs further stimulated my interest to look more into issues related to simulation of circuit and nurture me with ideas to improve the design and testing process. In the successful indicates the correct direction of this project. Executive Summary The aim of project is to researches and analyses for DC DC converter to suitable application of coil gun.
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1.0 Definition of Transformer: A Transformer is a static electric device that transfers electrical power from the primary winding to the secondary winding using electromagnetic induction. Transformers can raise or lower the voltage with conforming drop or rise in current. Transformers work on the value of mutual induction. When two coils are positioned so that the flux produced by one coil links to the other coil, then by fluctuating current in one coil the electromagnetic field is induced
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
fully understand what is happening in the circuit. The inductor and the wires are assumed as being ideal. The AC voltage source has an infinitely variable frequency (0≤f≤∞). The values of all the resistors, capacitor, and inductor are constant. In this AC circuit, you can analyze that each resistor is in series with either an inductor, voltage source, or capacitor. Resistor 2 is in series with the capacitor. Resistor 3 is in series with the inductor. Resistor 1 is in series with the AC voltage source
Capacitors- History of Capacitors 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
mode is, continuous-conduction mode (CCM), where the energy in the inductor flows continuously during the operation of the converter. The increase of the stored energy in the inductor during the ON time of the switch is equal to the energy discharged into the output during the OFF time of the switch, which ensuring the steady-state operation of the converter. At the end of the discharge interval, residual energy remains in the inductor. During the next ON interval of the switch, energy builds from that
This paper introduces the use of the voltage multiplier technique and passive absorption circuit applied to the non-isolated dc-dc converter in order to obtain high efficiency and high voltage gain. A passive absorption circuit is inserted in the interleaved flyback converter to transfer the leakage energy to load. The operation principle of the circuit is explained. This paper also deals with MPPT controlled high step up dc-dc converter. The switching element used in the flyback converter is MOSFETs
audio applications. A low-pass filter is the opposite of a high-pass filter, and a band-pass filter is a combination of a low-pass and a high-pass filter. In low pass filter Inductors block high-frequency signals and conduct low-frequency signals, while capacitors do the reverse. A filter in which the signal passes through an inductor, or in which a capacitor provides a path to ground, presents less attenuation to low-frequency signals than high frequency signals [12]. L L C Figure
classified according to the type of the input and output power • AC to DC (rectifier) • DC to AC (inverter) • DC to DC (DC-to-DC converter) • AC to AC (AC-to-AC converter) 1.2 AC to DC converter(rectifier) A rectifier is an electrical device that can converts alternating current into direct current. The process is known as rectification. Rectifiers have many uses, but mostly used as components of DC power supplies and high-voltage direct current power transmission system. Because of the alternating
Inversion is the change of dc power to ac power at a desired output voltage or current and frequency. A static semiconductor inverter circuit does this electrical energy inverting transformation. The terms voltage-fed and current-fed are used in relation with the output from inverter circuits. Conventionally, inverters are classified into two broad categories – voltage source inverter (VSI) and current source inverter (CSI). A VSI is one in which the dc input voltage would have to keep constant and
converter with continuous supply current has been shown in Fig.3. The topology consists of two input capacitors Cin1 and Cin2, two switches Q1 and Q2 which are triggered 180 degrees apart, two freewheeling diodes D1 and D2, two phase inductors L1 and L2, an output inductor Lo and an output capacitor Co. The voltage stress experienced by the switches and diodes are reduced due to the presence of the input capacitors. In the interleaved structure the current flowing through the two phases must be equal
in DICM. In DICM the inductor current becomes discontinuous in a switching period. The CSC converter have three modes of operation. These are explained as follows: Mode 1: In this mode the CSC converter is in ON position, then the inductor current charges the input current and the capacitor C1 discharges the energy to the dc link capacitor, the DC link capacitor is charging as well as supplies energy to the load. Mode 2: Here the CSC converter is in off position, the inductor L1 discharges the stored
The basic principles of Electrochemical Impedance Spectroscopy (EIS). For any electric circuit, which consists of various passive elements (i.e. resistors, capacitors and inductors) the behaviour of the whole circuit to an applied ac voltage, is dependent upon both the behaviour of individual elements, and also on their arrangement in the circuit with respect to each other. If a dc direct voltage is applied to the elements that comprise the equivalent circuit, the resulting current can be measured
A transistor is a device that can either switch an electric current on and off, or amplify an electric current. (http://www.pbs.org/transistor/teach/teacherguide_html/lesson3.html) The main component in a microchip is the transistor. Computers operate on a binary system, which uses only two digits: 0 and 1, all kinds of information are converted into combinations of 1s and 0s. As transistors can act as a switch, therefore their application in a computer microchip is to either let current through
Complex Numbers: Complex numbers are such type of numbers which contain a real part and an imaginary part. Every real number can be a complex number but every complex number can’t be a real number complex no.’s r very important for the applications of quantum mechanics, electrical engineering, conformal mapping, method of steepest descent and for method of stationary phase etc. As we have to talk about only the importance of complex numbers in the electrical engineering so let us begin our discussion
practicality; for instance you wouldn't use an antenna from a small radio to send a signal to a satellite. Antennas work by creating a resonating flow of charge along its element. The resonance is caused by a magnetic field fluctuating through an inductor that is fixed to a capacitor. As a magnetic field fluctuates across a conductor it causes charges to move. This motion causes an electro magnetic wave. The relations between the electricity and magnetism are explained by Maxwell's equations. Maxwell's
linearly decease of D0.which limits the reverse recovery current. when DO blocked the converter return to first stage. The static gain of the modified SEPIC converter with magnetic coupling and voltage multiplier is calculated by (4). where the inductor windings turns ratio (n) is calculated by Considering a duty cycle equal to 0.8, a static gain equal to q = 10 is obtained for n = 1, q = 15 for n = 2 and q = 20 for n = 3 and the switch voltage is equal to five times the input voltage for all cases
Circuits, what is up with that? First you need to understand how all the parts of a circuit relate. The main thing that a circuit has is conductance and that all the parts are conductors. Conductors are materials in which electric charges move freely. If the material isn't a conductor, it is either a insulator or a semiconductor. Conductors are mainly metalic substances such as copper, aluminum, and gold. Conductors allow a charge to build up and move "freely" through the conductor. When dealing
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