This paper deals with a design of a cost-effective protection circuits for a new developed high-power self-oscillating converter. The proposed solution provides a simple way to protect the converter and converterpowered circuits from the damage caused by possible fault modes of operation. It covers three typical failure events – short circuit at the output, overloading and overheating of the co...

The Alternate Arm Converter (AAC) is a voltage source converter being developed as an alternative to the Modular Multilevel Converter (MMC) for HVDC power transmission and reactive power compensation. Each Arm of the converter contains high voltage series IGBT Director Switches and full-bridge cells, which enables the VSC to ride through AC and DC network faults. This paper describes how the AA...

In this paper, Fuzzy Logic controller is developed for ac/ac Matrix Converter. Furthermore, Total Harmonic Distortion is reduced significantly. Space Vector Algorithm is a method to improve power quality of the converter output. But its quality is limited to 86.7%.We are introduced a Cross coupled DQ axis controller to improve power quality. The Matrix Converter is an attractive topology for Hi...

An on-chip calibration technique has been proposed for a 7-bit Comparator Based Asynchronous Binary Search (CABS) A/D Converter. The proposed design is veri-fied using an 8-bit, 3.3V, 10 MS/s Asynchronous SAR A/D Converter by integrating the calibration scheme into the A/D Converter. The 8-bit Asynchronous SAR A/D Converter consists of a track-and-hold followed by a two-step conversion process....

In recent years, power converters are used to get high power factor for low power applications. In this work, the design and development of a DC-DC Converter using two stage buck–boost converter with isolation operation as high-power-factor offline power supply for power-LED lamps is discussed. This converter is suitable for low power application such as a matrix LED lighting system. The advant...

The DS1875 features a pulse-width modulation (PWM) controller that can be used to control a DC-DC converter. The DC-DC converter can then be used to generate the high bias voltages necessary for avalanche photodiodes (APDs). This application note describes the operation of a boost converter that uses the DS1875. Discussion covers the selection of the inductor and switching frequency, and the se...

-In this paper, comparative evaluation of different techniques for harmonic reduction in input current of ac-dc converter is presented. Converters employing ac side switching, resonant converter, active clamped boost converter are simulated in PSIM and their performance under varying load condition with load voltage regulation is evaluated. The results revealed that active clamped boost convert...

This paper presents the development of a DC-DC boost converter. In the proposed boost converter design, a passive regenerative snubber circuit is included to absorb the energy of stray inductance so as to reduce the IGBT switching losses. MATLAB simulation as well as an experiment results are conducted to validate the proposed device. The results show that the proposed boost converter design gi...

This paper presents a novel multi-port DC/DC converter which is suitable to be used as the interface of hybrid renewable energy systems. The converter contains three unidirectional power flow ports which two of them are input ports and are connected to two independent energy sources while the third one is the output port that feeds a standalone load. Furthermore, the proposed converter contains...

Multi-port DC-DC converter has attracted special interest in applications where multiple energy sources are used. In this project, a three-port converter with three active full bridges, two LCC resonant tanks, and a three-winding transformer is proposed. It uses a single power conversion stage with high-frequency link to control power flow between batteries, load, and a renewable source such as...