Showing 1–12 of 74 results
A Four-Switch Three-Phase AC-DC Converter with Galvanic Isolation Abstract-A new single stage three-phase AC-DC converter with four switches and galvanic isolation is proposed in this paper. The new converter is simple and uses fewer switches than previously proposed AC-DC converters of the same type. It is a bridgeless converter that can operate with continuous input…
A Four-Switch Three-Phase AC-DC Converter with Galvanic Isolation Abstract-A new single stage three-phase AC-DC converter with four switches and galvanic isolation is proposed in this paper. The new converter is simple and uses fewer switches than previously proposed AC-DC converters of the same type. It is a bridgeless converter that can operate with continuous input…
Airline Reservation System Abstract-Airline reservation system is a computerized system used to store and retrieve information and conduct transactions related to air travel. User part is used as a front end and administrator is the back end. Administrator is used by airline authority. It will allow the customers to access database and allow new customers…
An Effective Gaussian Fitting Approach for Image Contrast Enhancement Abstract-Contrast enhancement plays an important role in image processing applications. This paper proposes a low-complexity automatic method for contrast enhancement. The method exploits the high-frequency distribution of an image to estimate an intensity-weighting matrix, which is then used to control the Gaussian fitting curve and shape…
An Improved Single-Stage PFC AC/DC Power Supply Abstract-This letter describes an enhancement to a previously reported single-stage transformer-leakage-inductance based power-factor-corrected isolated power supply. An improved switch timing calculation algorithm is developed to achieve zero current switch on of the active rectifier switches. The algorithm is based on an analytical model of the system relating the…
An Improved Single-Stage PFC AC/DC Power Supply Abstract-This letter describes an enhancement to a previously reported single-stage transformer-leakage-inductance based power-factor-corrected isolated power supply. An improved switch timing calculation algorithm is developed to achieve zero current switch on of the active rectifier switches. The algorithm is based on an analytical model of the system relating the…
An Interleaved Bi-directional AC-DC Converter with Reduced Switches and Reactive Power Control Abstract-In this paper, a new interleaved AC-DC converter with a reduced number of semiconductor components for high power energy storage applications is proposed. The interleaved structure reduces the AC side current ripple as well as increases the overall current rating. Moreover, the proposed…
An Interleaved Bi-directional AC-DC Converter with Reduced Switches and Reactive Power Control Abstract-In this paper, a new interleaved AC-DC converter with a reduced number of semiconductor components for high power energy storage applications is proposed. The interleaved structure reduces the AC side current ripple as well as increases the overall current rating. Moreover, the proposed…
Design and Stability Analysis of DC Microgrid with Hybrid Energy Storage System Abstract-This paper deals with the design and stability analysis of a DC microgrid with battery-supercapacitor energy storage system under variable supercapacitor operating voltage. The conventional design method reported in the literature considers the rated supercapacitor voltage in the modeling and design of controllers….
Analysis of the Neutral Point Voltage Self-Balance Mechanism in the Three-Level Full-Bridge DC?DC Converter by Introduction of Flying Capacitors Abstract-The three-level full-bridge (TLFB) DC?DC converter has been widely used in high-voltage high-power applications. In the experimental test, the neutral point voltage deviation appears, moreover, it has also been found out that if the flying capacitors…
Analysis of the Neutral Point Voltage Self-Balance Mechanism in the Three-Level Full-Bridge DC?DC Converter by Introduction of Flying Capacitors Abstract-The three-level full-bridge (TLFB) DC?DC converter has been widely used in high-voltage high-power applications. In the experimental test, the neutral point voltage deviation appears, moreover, it has also been found out that if the flying capacitors…
Automated Trading Point Forecasting based on Bicluster Mining and Fuzzy Inference Abstract-Historical financial data are frequently used in technical analysis to identify patterns that can be exploited to achieve trading profits. Although technical analysis using a variety of technical indicators has proven to be useful for the prediction of price trends, it is difficult to…
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