Author: Vikramarajan Jambulingam Publisher: LAP Lambert Academic Publishing ISBN: 9783659229503 Category : Languages : en Pages : 116
Book Description
A novel isolated zero-voltage-transition boost converter with coupled inductors is proposed in this project to satisfy the high power, high step-up and isolated requirements. In the proposed converter, the input-parallel configuration is adopted to share the large input current and to reduce the conduction losses, while the output-series structure is employed to double the output voltage gain. Consequently, a transformer with a low turns ratio can be applied, which makes the transformer design and optimize easily. Moreover, the active clamp circuits are employed to reduce the switch voltage stress and to recycle the energy stored in the leakage inductance. The ZVT is achieved during the whole switching transition for all the active switches, so the switching losses can be reduced greatly. Furthermore, the diode reverse-recovery problem is partly solved due to the leakage inductance. In addition, the magnetic integration technology is applied to improve the efficiency and to reduce the magnetic component size. Finally, a 12-V input 96-V output 1-kW prototype operating with 100-kHz switching frequency is built and tested to demonstrate the effectiveness of the proposed converter.
Author: IEEE Staff Publisher: ISBN: 9781665441766 Category : Languages : en Pages :
Book Description
Tracks for the Event AI and Data Science Robotics and Cybernetics Devices, Circuits and Systems Control and Instrumentation VLSI and Nanotechnology Power, Energy and Power Electronics Computational Biology and Biomedical Informatics Antenna and Microwave Techniques Communications Networks, IoT Computer Architecture and Embedded Systems Signal Processing and Multimedia Security and Privacy
Author: Publisher: ISBN: Category : Languages : en Pages : 6
Book Description
Interleaved power converter topologies have received increasing attention in recent years for high power and high performance applications. The advantages of interleaved boost converters include increased efficiency, reduced size, reduced electromagnetic emission, faster transient response, and improved reliability. The front end inductors in an interleaved boost converter are magnetically coupled to improve electrical performance and reduce size and weight. Compared to a direct coupled configuration, inverse coupling provides the advantages of lower inductor ripple current and negligible dc flux levels in the core. In this paper, we explore the possible advantages of core geometry on core losses and converter efficiency. Analysis of FEA simulation and empirical characterization data indicates a potential superiority of a square core, with symmetric 45 energy storage corner gaps, for providing both ac flux balance and maximum dc flux cancellation when wound in an inverse coupled configuration.
Author: IEEE Staff Publisher: ISBN: 9781538649978 Category : Languages : en Pages :
Book Description
Areas to be covered, but not limited to Power Electronics and Energy Conversion Electrical Machines and Drives Renewable Energy Systems Energy Storage and Battery Management Transportation Electrification and Vehicle Systems Smart Grid Technologies Control System, Robotics, Mechatronics and Automation Electronic Devices and Circuits
Author: Timothy L. Skvarenina Publisher: CRC Press ISBN: 1420037064 Category : Technology & Engineering Languages : en Pages : 664
Book Description
Less expensive, lighter, and smaller than its electromechanical counterparts, power electronics lie at the very heart of controlling and converting electric energy, which in turn lies at the heart of making that energy useful. From household appliances to space-faring vehicles, the applications of power electronics are virtually limitless. Until now, however, the same could not be said for access to up-to-date reference books devoted to power electronics. Written by engineers for engineers, The Power Electronics Handbook covers the full range of relevant topics, from basic principles to cutting-edge applications. Compiled from contributions by an international panel of experts and full of illustrations, this is not a theoretical tome, but a practical and enlightening presentation of the usefulness and variety of technologies that encompass the field. For modern and emerging applications, power electronic devices and systems must be small, efficient, lightweight, controllable, reliable, and economical. The Power Electronics Handbook is your key to understanding those devices, incorporating them into controllable circuits, and implementing those systems into applications from virtually every area of electrical engineering.
Author: Stephen Moerer Publisher: ISBN: Category : Languages : en Pages : 69
Book Description
"As photovoltaic panels become a more dominant technology used to produce electrical power, more efficient and efficacious solutions are needed to convert this electrical power to a useable form. Solar microconverters, which are used to convert a single panel's power, effectively overcome issues such as shading and panel-specific maximum power point tracking associated with traditional solar converters which use several panels in series. This thesis discusses a high gain DC-DC converter for incorporating single low-voltage solar panels to a distribution level voltage present in a DC microgrid. To do this, a converter was developed using coupled inductors and a capacitor-diode multiplying cell which is capable of high-gain power transmissions and continuous input current. This approach improves the efficiency of the system compared to cascaded converters typically used in this application. Challenges with this converter are discussed, a passive lossless clamp is introduced, and simulation results are presented. This converter has additional applications where high gain DC-DC conversion is required, including fuel cells and energy storage systems such as batteries and ultracapacitors"--Abstract, page iii.
Author: Fei Gu Publisher: ISBN: 9781303471964 Category : Languages : en Pages : 99
Book Description
High boost ratio DC-DC converters are needed for many applications such as photovoltaic inverter systems where a low voltage input is often required to be boosted by a factor of ten or more with high efficiency. To achieve this coupled inductor based converters are often studied. In addition to providing high voltage gain, these converters provide benefits compared to non-coupled designs such as reduced RMS currents and galvanic isolation. However, their use also presents challenges; in practical devices imperfect magnetic coupling between windings gives rise to stored leakage inductance energy that may resonate with stray circuit capacitances resulting in ringing and large voltage transients. This problem is amplified in high step-up converters where the magnetic device typically contains a large number of secondary turns. As secondary leakage inductance scales with n2 this often results in a substantial secondary leakage inductance. A protective snubber circuit is typically required to absorb the leakage energy. Dissipation of the leakage energy results in poor converter efficiency and overheating; a desirable snubber should recycle the absorbed energy and create favorable zero-voltage or zero-current conditions at switching instances. In this thesis, a regenerative snubber universally suitable for coupled inductor converters containing an output inductor rectifier is presented. The snubber has been applied to a tapped-inductor boost converter designed for solar MPPT/inverter applications. The converter is able to achieve a high step-up ratio with high efficiency, limit EMI, and reduce voltage stress on switching devices.
Author: Vikramarajan Jambulingam
Author: Vikrin Harsya
Author: IEEE Staff
Author: 
Author: IEEE Staff
Author: Lai Shih Chieh
Author: Timothy L. Skvarenina
Author: Stephen Moerer
Author: Fei Gu
Author: Jieli Li