The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper describes the analysis and design of a DC-DC converter topology which is operational at frequencies in the Very High Frequency (VHF) band ranging from 30 MHz-300 MHz. The presented topology, which consists of a class E inverter, class E rectifier, and self-oscillating gate driver, is inherently resonant, and switching losses are greatly reduced by ensuring Zero Voltage Switching (ZVS) of...
This paper presents a developed impedance-type power inverter that is termed switched-inductor Z-source inverter. To enlarge voltage adjustable ability, the proposed inverter employs a unique switched-inductor impedance network to couple the main circuit and power source. Compared with the classical Z-source inverter, the proposed inverter increases the voltage boost inversion ability significantly,...
This paper presents a PV inverter system formed by a DC-DC converter and a full-bridge DC-AC converter. The DC-DC converter combines the boost and flyback topologies to produce a semi-sinusoidal output current and to achieve the high step-up objective. A full-bridge DC-AC converter controlled with low-frequency switching techniques is then used to convert the current into sinusoidal form and to feed...
This paper is focused on the high-voltage (ges2 kV) high-power (ges20 kW) isolated DC/DC converters. The 3.3 kV IGBT based three-level half-bridge inverter topology was analyzed as an alternative to the two-level half-bridge with 6.5 kV IGBTs. The properties of primary switches, theirs selection procedure as well as inverter loss distribution, design challenges, costs of semiconductors and passive...
This paper presents a novel L-source inverter applied to AC induction motor starter system. The L-source inverter can work under shoot through zero-vector situation with storage inductance which allows the upper and lower power switches of one half-bridge shoot through simultaneously. It provides higher output voltage than traditional ones and overcomes the problem of voltage drop in traditional starters...
This paper is a continuation of previously published paper ldquodirect amplitude modulation (DIRAM)rdquo operating in DC to DC power conversion domain. The DIRAM topology is fully applicable in inverters arena as well, with numbers of distinguished advantages. DIRAM can serve as a foundation stone to a new, high efficiency, high power density generation of inverters.
To reduce the number of power devices, diodes and simplify the driving circuitry, a novel multilevel DC-link (MLDCL) inverter is proposed in this paper. The new topology consists of N DC-DC converter cells and a single-phase full-bridge converter, of which each DC-DC converter needs only one power device to implement power conversion. The new topology produces a significant reduction in the number...
This work presents a simulation analysis of several DC-DC converters applied to a three-level three-phase NPC inverter, while driving an induction motor with a load torque proportional to the square of the speed. The purpose is to identify practical solutions which can suit rural applications fed by renewable sources. Two topologies are proposed. The analysis is carried out through PSCAD/EMTDCtrade...
We describe a single-stage low-cost and efficient fuel-cell (FC) power-electronics system (PES), which comprises a front end phase-shifted high-frequency (HF) full-bridge inverter followed by a step-up high-frequency transformer and a forced cycloconverter for universal residential FC power system (i.e., 110 V/240 V and 60/50 Hz). This single-stage dc/ac converter approach meets the higher energy...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.