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.
Blockchain technology is a kind of distributed database network, which provides the P2P (Peer-to-Peer) digital currency transaction mode through the encryption algorithm and the decentralized mechanism. This paper is to study the application of blockchain technology related to industry 4.0, and put forward blockchain technology in the cooperative development of power electronic devices. The above...
Wide-band-gap devices can provide much faster switching speed. But the dv/dt of switching node voltage also becomes much higher, causing potential common mode noise issue. On the other hand, PCB winding transformer has significant large inter-winding capacitance, which provides a low impedance path for common mode noise. In this paper, a symmetrical resonant converter as well as a symmetrical PCB...
Two gallium oxide (Ga2O3) MOSFETs, a non field plated (NFP) device and a field plated (FP) device, are proposed and simulated in Silvaco TCAD. The static characteristics of the devices were obtained from Silvaco TCAD and the characterization of switching performance was conducted in Silvaco mixed-mode with inductive load test circuit. To study the influence of the thickness of the field plate oxide...
This paper describes new features and versatility of a Verilog-A FET model for High-Efficiency and wideband applications, with examples in GaN technologies. It describes the flexibility of having the Internal output nodes available for design in exact wave-shaping for high-efficiency class amplifications and a more realistic CDS formulation that meets the needs of newer HEMT technologies with multiple...
The recently emerged technology IPC is aimed at solving the issues of operational control of the electric power systems. There are examples in practical use of this technology illustrating the characteristic features inherent to this family of FACTS controllers. In particular, the Plattsburgh IPC in the USA is in service operation since 1998. ABB Energy Company is the holder of a license for the development...
The U.S. Department of Energy's Advanced Research Project Agency for Energy (ARPA-E) was established in 2009 to fund creative, out-of-the-box, transformational energy technologies that are too early for private-sector investment, at make-or break points in their technology development cycle. Development of advanced power electronics with unprecedented functionality, efficiency, reliability, and reduced...
This paper is focused on studying a 1200V SiC JFETs cascode device released recently. The gate drive circuit design and switching performance are compared with its counterpart, 1200 V SiC MOSFETs. The research finds out the gate drive circuit design of SiC JFETs cascode is similar to that of SiC MOSFETs. In addition, an optimized gate driver is designed to minimize the device switching loss without...
We experimentally show the performance of a Virtual Infinite Capacitor (VIC) in suppressing the voltage ripple. VIC mainly uses a bi-directional DC-DC converter with only two small capacitors inside to mimic the filtering process of a large capacitor by applying suitable control algorithms. It was firstly proposed in [1], [2] and then improved in [3] in both control algorithms and circuit designs...
An investigation of the voltage imbalance of the two capacitors of the semi-full-bridge submodule is performed. Since the capacitances are not exactly the same, there may be a difference between the capacitor voltages. The resulting current-spike when they are connected in parallel has been analyzed in a full-scale laboratory experiment.
Development and technology maturation of Silicon Carbide (SiC) power transistors over the last 15 years has motivated its study in aerospace systems. When compared with Si devices, superior voltage blocking capacity and the capability of operation at higher temperatures, give important advantages in space power electronics applications, similar to what happens in terrestrial electronics. This paper...
This paper proposes a single-switch circuit derived from buck boost converter which converts input DC voltage into desirable AC and DC voltages. The switching strategy used is sinusoidal pulse width modulation with a DC offset-known as augmented sinusoidal pulse width modulation (ASPWM). The ASPWM waveform is obtained by sine triangle comparison method where the modulating signal is the combination...
This paper presents an interleaved multiphase hybrid buck-boost DC/DC converter. This converter type provides high efficiency and can be used for applications with wide voltage conversion ratio. At the beginning, the circuit function and the design of a single-phase converter is described. With a multiphase design, the filter circuit effort can be significantly reduced. In these circuits the different...
This paper is about the design for the control of a cascaded hybrid converter for railway applications. It shows, how to control the converter with considerations of special aspects for the use in rail vehicles. It considers several aspects of reducing THD of the current and reduction of switching losses.
This paper presents research results of switching strategies of a power electronic resonant zero current switching (ZCS) DC-DC switched-capacitor voltage multiplier (SCVM). The SCVM can operate under the various switching methods, which determine the rated power of the converter, its efficiency, capacitors selection, as well as the input and output current waveforms. The switching strategies are demonstrated...
A novel quadratic buck-boost DC/DC converter is presented in this study. The proposed converter utilizes only one active switch and can step-up/down the input voltage, while the existing single switch quadratic buck/boost converters can only work in step-up or step-down mode. First, the proposed converter is analyzed in steady-state. Then, its performance is validated using simulations in MATLAB/Simulink...
This paper shows that the ZETA-SEPIC converter can be used as a bidirectional charging system between a high DC link voltage and a low voltage battery system. Main advantages are transformerless operation and that the coupling capacitor protects and separates both sides of the converter in case of short circuits.
In order to achieve high-quality, high-dynamic power amplification a method is proposed to split and process the current ripple independently from the main bulk current. As a consequence, low-power switching circuits with reduced stress, so-called basic crossover correction cells, can be effectively applied. Comparisons are presented to validate the proposals.
Traditional seven-level Active Neutral-point-clamped (ANPC-7L) converters suffer from the problems of dynamic voltage balancing in series switches and multi voltage levels jumping of phase output voltage during switching status transition. This paper presents a novel ANPC-7L topology with auxiliary commutating branches and elaborates on its commutating strategies. The presented topology and its commutating...
The simulation of transmission and distribution grids comes with a trade-off between the number of modeled components and the modeling depth on the one hand and the simulation speed on the other hand. An example system of a grid converter of a 2 MW full scale converter system is used to show a step-by-step model order reduction. Starting from a detailed switched model the order reduction is shown...
Power electronic devices are finding increasing applications in the control, instrumentation, and switching in electric power distribution systems. Applications include solid state transformers and solid state fault interruption devices. Some of these devices may be connected directly to the distribution primaries (typically in the 15 kV class). This paper addresses the concerns related to the direct...
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.