Introduction to Power Electronics

2020

Power electronics is the application of solid-state electronics for the control and change of electric power. It gives essential information on electronics for the control and transformation of electrical power with high proficiency. The structure of Modern power systems has been isolated in three diverse interlinked areas - age, transmission and appropriation similarly. For the most part the yield of generator is consistently AC, yet in certain applications DC supply is needed, where ideal usage of effective power is got as for applications model various kinds of attachments, connectors, switches, and apparatuses. High-voltage direct flow (HVDC) electric power transmission systems use DC for the mass transmission of electrical power. While, at times AC supply is needed and DC amount is provided there, model transformers, 3A¸ engine, and so on. In such cases change in AC to DC or DC to AC is required. This should be possible utilizing electronic electronics, for example, SCR, Power ...

The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

Energy and Power Engineering, 2016

Out of many renewable energy resources, solar energy is one of the conspicuous sources of energy which can supply the increasing demand of energy. As of May 2014, India has an installed PV capacity of 2.5 GW. The solar photovoltaic project includes power electronics with high quality performance devices, incorporated with smart energy management principles. Power electronics is used to improve the energy efficiency of apparatus, and help the generation of environmentally clean energy. In this article the explanation of role of power electronics and the discussion about similar and future concepts in solar photovoltaic systems related to reliability and advancement of each technology in India has been presented.

Photovoltaic generate electric power when illuminated by sunlight or artificial light. It directly convert the sun's energy into electricity which can be easily transported and converted to other forms for the benefit of society. The role of power electronics converter is very important in the PV systems. The electricity generated by a PV module is in the form of direct current (DC). Transformation of direct current to alternating current (AC) required by many common appliances and for grid-connection is achieved with inverter system. There are two stages where power electronics converter are used, first DC-DC converter stage in which lower level PV voltage is stepped-up at the required higher level; and second DC-AC inverter stage in which boosted DC link voltage is converted into AC. The inductor of traditional buck boost converter is replaced by switched inductor circuit consists of two inductor and three diodes. Buck Boost converter is used to boost the photovoltaic voltage at the required high level also act as a MPPT (Maximum Power Point Tracking) controller together with MPPT algorithm to extract the maximum power from the photovoltaic module.

2008 IEEE Energy 2030 Conference, 2008

Power Electronics will play a key role in this paradigm shift to more renewable electrical energy and higher energy efficiency in multiple applications including transportation. In electrical energy generation a major shift to renewables as sources of future electrical energy will happen. The political institutions worldwide have the responsibility to create the boundary conditions to accelerate this needed change. Renewables (Wind, Solar, ..) are important future contributors and solar power (photovoltaic or thermal) needs to be taken serious. In regards of energy efficiency we need to focus on efficient bulk power generation including the mandatory use of waste heat for district heating or process industries. This all will ask for a substantial expansion and modernization of the electrical distribution and transmission system with more MVDC and HVDC systems. In industrial processes efficiency improvements can be achieved with a major focus on pump and fan applications. Another 30% of inefficient pump and fan applications need to be converted to variable speed drives to get an average of 40% energy saving in these applications. In regards of transportation up to 30-50% fuel / energy consumption reduction can be achieved with the DC-link based power system to enable efficient hybrid and in the longer term pure electrical solutions in transportation.

EESES Electric Energy Systems and Engineering Series, 1986

2011

The fast development of power electronics based on new and powerful semiconductor devices has led to innovative technologies, such as high voltage dc transmission (HVDC) and flexible ac transmission system (FACTS), which can be applied in transmission and distribution systems. This paper has discussed the application of high voltage power electronics FACTS and HVDC controllers, needs of advance FACTS and HVDC based control for future power system and enhancing system stability and its development. HVDC and FACTS offer major advantages in meeting these requirements. Keywords—Flexible ac transmission system FACTS), High-voltage dc transmission (HVDC), FACTS devices, Power system development and reliability, power system controllers

Journal of Modern Power Systems and Clean Energy

The main objective of this paper is threefold. First, to provide an overview of the current status of the power electronics technology, one of the key actors in the upcoming smart grid paradigm enabling maximum power throughputs and near-instantaneous control of voltages and currents in all links of the power system chain. Second, to provide a bridge between the power systems and the power electronic communities, in terms of their differing appreciation of how these devices perform when connected to the power grid. Third, to discuss on the role that the power electronics technology will play in supporting the aims and objectives of future decarbonized power systems. This paper merges the equipment, control techniques and methods used in flexible alternating current transmission systems (FACTS) and high voltage direct transmission (HVDC) equipment to enable a single, coherent approach to address a specific power system problem, using 'best of breed' solutions bearing in mind technical, economic and environmental issues.

2015

The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

Advances in Computer and Electrical Engineering

This chapter introduces the custom power device to solve the various kinds of power quality (PQ) problems. It is generally known as flexible AC transmission system (FACTS) and D-FACTS (FACTs used for low voltage and low current rating in AC distribution system). The D-FACTS are various types like dynamic voltage restore (DVR), static compensator in distribution system (D-STATCOM), and unified power quality conditioner (UPQC). The third one is combination of DVR and D-STATCOM, which is known as UPQC. The UPQC can compensate all the PQ problems. Comprehensive knowledge of UPQC is presented here to understand the trade value of this device. This chapter is organized as follows: The evaluation of power electronic based devices is presented in the background part of this chapter where custom power devices (CPDs) are also discussed. And operating principle with the Matlab model of UPQC and results are presented in the section titled "Working Principle of Unified Power Quality Conditioner (UPQC)." The scope of the one of the functional power electronic based devices are presented in section titled "Scope of UPQC." At the end, this chapter is concluded.