1755-4535 Three-phase interleaved high-step-up converter with coupled-inductor-based voltage quadrupler Yihua Hu‚ Weidong Xiao‚ Wuhua Li‚ Xiangning He College of Electrical Engineering‚ Zhejiang University‚ Hangzhou 310027‚ People’s Republic of China E-mail: woohualee@zju.edu.cn Abstract: This paper proposes a high-efficient DC–DC solution with the features of galvanic isolation‚ high-voltage gain‚ zero voltage switching operation‚ low input current ripple and high-power density. The converter
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in reference values like AC voltage‚ DC voltage and angle order of the series voltage source converter is simulated. In this control system‚ a generalized pulse width modulation technique is used to generate firing pulses for both the converters. Installing the UPFC makes it possible to control an amount of active power flowing through the line. Simulations were carried out using MATLAB and PSCAD software to validate the performance of the UPFC. Keywords: DC voltage regulation‚ Flexible AC Transmission
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decrease the voltage (called a step down transformer). or increase the voltage (called a step up transformer‚ shown below). Alternating current is passed through the primary coil (the input) which creates a changing magnetic field in the iron core. The changing magnetic field then induces alternating current of the same frequency in the secondary coil (the output). A step up transformer has more turns of wire on the secondary coil‚ which makes a larger induced voltage in the secondary
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motivating electrons to "flow" in a circuit is called voltage. Voltage is a specific measure of potential energy that is always relative between two points. When we speak of a certain amount of voltage being present in a circuit‚ we are referring to the measurement of how much potential energy exists to move electrons from one particular point in that circuit to another particular point. Without reference to two particular points‚ the term "voltage" has no meaning. Free electrons tend to move through
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reviews the basic power supply design knowhow assumed in the rest of the book. In mains-supplied electronic systems the AC input voltage must be converted into a DC voltage with the right value and degree of stabilization. Figures 1 and 2 show the simplest rectifier circuits. In these basic configurations the peak voltage across the load is equal to the peak value of the AC voltage supplied by the transformer’s secondary winding. For most applications the output ripple produced by these circuits is too
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The first part consisted of understanding how to determine the current‚ voltage and resistance as part of Ohm’s law. The second part consisted of how to use the variables in an electrical current. Knowing how the variables are used in calculations and electrical currents is important in determining the value of the resistor and how it affects the current in the circuit. A device known as the multimeter is used to find the voltage and current in the circuit. Ohm ’s principal discovery was that the amount
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most commonly used amplifier? a. CC b. CB c. CE d. Op-amp 3. How do we determine the voltage gain of the common-emitter amplifier? a. Divide the AC collector resistance by the AC emitter resistance b. Divide the AC collector resistance by the AC base resistance c. Divide the AC emitter resistance by the AC base resistance d. Divide AC emitter resistance by the AC collector resistance. 4. Which amplifier has voltage gain of approximately 1? a. Common emitter b. Common base c. Common collector d. FET
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Class: PHY 1434-E475 Due date: March‚ 13 20144 Group Names: Hisham Sageer Objectives: Our object is to confirm Ohm’s law by analyzing the dependence of the electrical current as a function of voltage and as a function of resistance. Also‚ we studied the current flow and voltage in series and parallel. Finally‚ the lab determined the equivalence resistance of series and parallel combination of resistors and compared the results with theoretical data. Theoretical Background: The
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| 22.27% | 20.44% | CONCLUSION After conducting the experiment‚ we arrive at a conclusion that: I. Open circuit tests and short circuit tests are tests that are performed on a transformer to determine‚ equivalent circuit of transformer‚ voltage regulation of transformer‚ efficiency of transformer. II. The power required for these Open Circuit test and Short Circuit test on transformer is equal to the power loss occurring in the transformer. III. In additon‚the open circuit test
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charge. 4. Voltage is the electric potential that exists to move a charge. 5. Power is the rate at which electric energy is flowing in a circuit. 6. Ohm’s Law: Power = Voltage x Current. 7. Resistance is a physical property that quantifies how well a charge can move through a material. 8. Ohm’s Law: Voltage = Current x Resistance. 9. Electric circuits provide a means to harness electrical energy and use it in our everyday lives. 10. Circuits require a voltage source to operate
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