steady-state processes in a power PT converter with a halfway two diodes output rectifier are studied. It is shown that such a power converter can operate in two modes: with or without overlap of the conduction intervals of the diodes. The analytical equations and characteristics derived in this study were found to be in good agreement with simulation and experimental results. The study highlig...

This paper reviews a computer-aided analytical technique for predicting the power transfer capability of an AC inverter energizing a separable inductive coupling. The capability curve is obtained using a switching model of the output rectifier and a readily available software package such as MATLABB. The capability curve is useful, among other applications, for evaluating candidate separable tr...

This paper presents a novel configuration of separate zigzag transformers based 18-pulse AC –DC converter for improving the ripple factor & isolation of three phase uncontrolled rectifier, this approach eliminates the complexity required to design a complicated auto transformers or isolated multi winding transformer as used with other systems. The paper also presents the comparison among 12 pul...

The design of a 1000-W universal AC input to 48-VDC output power supply is described. This power supply consists of an interleaved Power Factor Correction (PFC) stage and a phase shifted full bridge (PSFB) DC/DC converter, all controlled by a single UCD9501 DSP controller. The design steps leading to the development of the control effort for the DSP are outlined and compared to the equivalent s...

The uncontrolled three-phase bridge rectifier has the least line current distortion among six-pulse rectifiers; however, its total harmonic distortion (THD) of 31.08% is unacceptable as per the contemporary power quality standards. This paper seeks to address the issue by elimination of triplen harmonics in the line currents by providing a deltawye transformer at the ac interface i.e. between t...

A new soft-switching technique that improves performance of the high-power-factor boost rectifier by reducing switching losses is introduced. The losses are reduced by an active snubber which consists of an inductor, capacitor, rectifier, and an auxiliary switch. Since the boost switch turns off with zero current, this technique is well suited for implementations with insulated-gate bipolar tra...

The novel characteristics of a new Schottky rectifier structure, known as the lateral merged double Schottky (LMDS) rectifier, on 4H-SiC are explored theoretically and compared with those of the compatible conventional 4H-SiC Schottky rectifiers. The anode of the proposed lateral device utilizes the trenches filled with a high barrier Schottky (HBS) metal to pinch off a low barrier Schottky (LB...

Modern “electric platform” based vehicles and aircraft for commercial and military duty are using electric motors in large numbers. The demand for higher efficiency, improved performance, lower noise and smaller controller footprint has led to development of a high reliability motor controller for vector controlled permanent magnet motors. This controller is optimized to act as a design platfor...

The two-inductor boost converter with an auxiliary transformer has been previously proposed for the applications where a large difference between the input and the output voltages is required. In the isolated version of the converter implementation, however, the leakage inductance of the high frequency isolation transformer presents an adverse effect and will cause significant voltage ringing o...

A comparative study between the topologies consisting of the Conventional Electronic Load Controller and the Proposed Electronic Load controller (ELC)has been carried out in this paper for the power Quality Improvement in a conventional Electronic Load controller used for Isolated pico-hydropower generation using Asynchronous generator (AG). A polygon wound autotransformer with reduced Kilo Vol...