BTP MID SEMESTER EVALUATION REPORT - saransh sharma - Under the guidance of prof. G.Poddar Departmental supervisor signature Objective * To design a DC-DC bidirectional dual active bridge converter using IGBT having switching frequency of 50 Khz and all the IGBT’s switched using ZVS switching. Literature * Studied a paper titled PWM control of dual active bridge converter
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comparison of high efficiency high power boost DC/DC converters for photovoltaic applications J. DAWIDZIUK∗ Faculty of Electrical Engineering‚ Department of Automatic Control Engineering and Electronics‚ Bialystok University of Technology‚ 45D Wiejska St. 15-351 Bialystok‚ Poland Abstract. Recent environmental issues have accelerated the use of more efficient and energy saving technologies in renewable energy systems. High power high efficiency boost DC/DC converters for the use in photovoltaic‚ fuel
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design a 12-volt DC power supply with a maximum output current of 200mA. To reduce the ripple factor to a value less than 0.1%. Apparatus 120-volt rms 60Hz input 60 ohm to 1k ohm load resistor 10 to 1 step-down transformer FWB bridge Voltage Regulator 2 100nF capacitors 10uFcapacitor 4.7 uF Capacitor Overview The goal of this experiment was to construct a power supply that would convert a 120-volt 60 Hz input ‚such as that received from a wall socket‚ to a 12-volt dc voltage output
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The novel “The Circuit” began in El Rancho Blanco‚ Mexico‚ then continues to California. They travel many places in California because they have come to the United States illegally. The characters are Papa‚ Mama‚ Roberto‚ Panchito‚ Trampita‚ Ruben‚ and Rorra. The basic situation is: the family has always wanted to move to California thinking that they will get a better life‚ but instead end up getting worse‚ and being taken by La migra. That is “The Circuit” exposition. The stories central problem
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Inductors and capacitors‐basic properties. Pulse‐Width‐Modulation (PWM) 2 Linear vs Switch mode conversion 3 Switching Power‐Pole + Vin q A qA 1 vv A + vA - A Vin 0 0 t • Bi‐Positional Switch • Voltage Port – where a capacitor is connected in parallel to Vin so that it cannot change instantaneously • Current Port – where an inductor is connected in series through which current cannot change instantaneously 4 Control by Pulse‐Width Modulation (PWM) qA + 1 idA d A Ts + iA 0 Tup
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The criterion of meaning says that a statement is meaningful is and only if it is empirically or logically verifiable. Both the principle of verification and falsification have there basis on trying to prove or discredit the truth. Many philosophers‚ both past and present‚ have spent countless time arguing for one principle over the other. Before verification was pronounced as an actually principle‚ experiments were used to test whether or not a theory was true. During the time of Galileo‚ it was
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1) a. When KCl is injected into the bloodstream of the patient‚ the K+ gradient across the membrane is reduced. This results in depolarization where cells generate an action potential. Voltage-gated Na+ channels open in response to depolarization and close by inactivation for a refractory period and remain closed until repolarization. In this new setting‚ less K+ leaks out of the intracellular space and the cell is unable to return to its resting membrane potential (ie. The cell stays slightly depolarized)
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Parallel Forces Objective: Find FA and FB on the apparatus which are parallel to both Fulcrum A and B. Calculations: Theoretical FB Στ = 0 +FB 0.5 - (0.1kg x g x 0.1m) - (0.2kg x g x 0.4m) - (0.05kg x g x 0.7m) - (0.1kg x g x 0.3m) = 0 -[{(0.1kg x 0.1m) + (0.2kg x 0.4m) + (0.05kg x 0.7m) + (0.1kg x 0.3m)}x 9.8] + 0.5FB = 0 0.5FB = [(0.1 x 0.1) + (0.2 x 0.4) + (0.05 x 0.7) + (0.1 x 0.3)]x 9.8 FB = FB = 3.04 N Experimental FB FB = mpanB g - mfulcrumB g FB = (0.385kg x 9.8)
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Sarmiento Daphnia Ecotoxicology Lab Report Introduction Ecosystems have a way of maintaining themselves under ordinary conditions but when a new factor is added that will most likely threaten the environment action needs to be put forth. Our environment is affected by many pollutants on a daily bases forming a threat to natural stability. For example some of the most polluted parts of the environment are bodies of water like that explained in our lab. Once pollution occurs animals
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A VERIFICATION AND VALIDATION Verification and validation is a systems engineering discipline that determines if work products comply with their specifications and are fit for their intended use. More specifically: Verification establishes the truth of correspondence between a work product and its specification (from the Latin veritas‚ “truth”). Validation establishes the fitness of a software product for its operational mission (from the Latin valere‚ “to be worth”). It answers
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