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 proposes a new battery management system (BMS) for a series string of battery cells. The proposed control structure is based on a duality of the adaptive droop control theory used in grid / microgrid connected sources. The presented BMS control structure yields higher reliability compared to the conventional ones due to its decentralization features and its communication-less ability. The...
The input-series output-parallel (ISOP)-connected system has a wide range of applications. In this paper, we propose an input voltage-sharing control scheme that quickly combines commercial modules in an ISOP connection. A metal-oxide-semiconductor field-effect transistor (MOSFET) is connected in parallel at the input side of each converter and is controlled by an input voltage-sharing loop to maintain...
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...
In order to improve steady and dynamic characteristics, a sliding mode control for a phase shifted full bridge DC/DC converter with fixed switching frequency is presented. Mode of the full bridge DC/DC converter is established by averaged current method. Linear combination of output voltage and its differential and integral is chosen to design sliding mode surface. The proposed algorithm is validated...
This paper addresses the limitation of current technologies in the interconnection between medium-voltage (MV) DC and high-voltage (HV) DC grids. One transformerless approach is proposed to achieve bidirectional high power transfer and high step up/down ratio, which can be configured to interface with different grids connection. The proposed technology integrates modular multilevel converter (MMC)...
This paper presents an performance improvement of neutral-point balancing using DC/DC converter. The proposed energy storage system (ESS) is composed of AC/DC three-level converter and DC/DC three-level converter. The conventional neutral-point control method is balanced by adding a duty-offset to the duty of the switches. But this paper is proposed adding additional neutral-point controller using...
The paper presents a detailed analysis of the asymmetrical half-bridge PWM converter. Due to its advantages with regard to efficiency, power density and cost the topology gains increasing attention. Recent publications propose a rough but simple converter model which helps to understand the basic converter functioning. A comparison between measured and simulated waveforms, however, reveals its insufficiency...
The advances of digital control systems require a new approach for design and development of power electronics devices. Modern simulation methods allow creating control systems of power converters based on their real microprocessor implementation. Thus, a digital control algorithm of device can be completely recreated, debugged and verified in the model. This paper proposes the control algorithm for...
After the working principle and states of a new type of single-phase differential single-stage inverter based on classic BOOST DC/DC converters being analyzed, a topology family of single-phase and three-phase single-stage inverters are be concluded and be brought forward as a “BOOK” inverter name in the same differential working idea. The mathematical characteristics of single-phase and three-phase...
Fuel cell based distributed generations have been receiving more attention in the last years because of their high efficiency, low aggression to the environment, no moving parts and superior reliability and durability. Fuel cells seem to be a good option to be implemented as a distributed generation (DG) in distribution systems. In this paper, a set of interfaces are designed. First of all, a novel...
Teaching power electronics is not an easy task. Many different electronic and related technologies are involved. An overview of the evolution of the teaching methodology along many years, created different needs. Two research works came along in this paper. The first one is a remote test bench for DC/DC converters. The second one is a survey on relevant aspects of simulation packages employed by students...
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.