Download or read book Design Implementation and Verification of a Multipurpose Flexible Three phase Back to back Voltage source Inverter written by Elaina T. Chai and published by . This book was released on 2014 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, I designed, implemented, and verified a multi-purpose,three-phase back-to- back voltage source inverter for grid connected applications. This inverter features extensive hardware protection, opto-isolation between the power stage and the controller, and reconfigurable I/O routing. The converter is designed for both research and teaching to enable rapid prototyping and verification of advanced control algorithms for grid-connected converters, motor drives etc. I also demonstrate the utility of the power electronics converter as a vector controlled PMSM motor drive. Finally, I use the inverter to perform frequency domain validation of a hardware-in-the-loop simulator. I then design and implement a virtual spectrum analyzer, whose implementation required the creation of a DFT algorithm in python based on the Goertzel algorithm.

Download or read book Soft Switching Technology for Three phase Power Electronics Converters written by Dehong Xu and published by John Wiley & Sons. This book was released on 2021-12-09 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soft-Switching Technology for Three-phase Power Electronics Converters Discover foundational and advanced topics in soft-switching technology, including ZVS three-phase conversion In Soft-Switching Technology for Three-phase Power Electronics Converters, an expert team of researchers delivers a comprehensive exploration of soft-switching three-phase converters for applications including renewable energy and distribution power systems, AC power sources, UPS, motor drives, battery chargers, and more. The authors begin with an introduction to the fundamentals of the technology, providing the basic knowledge necessary for readers to understand the following articles. The book goes on to discuss three-phase rectifiers and three-phase grid inverters. It offers prototypes and experiments of each type of technology. Finally, the authors describe the impact of silicon carbide devices on soft-switching three-phase converters, studying the improvement in efficiency and power density created via the introduction of silicon carbide devices. Throughout, the authors put a special focus on a family of zero-voltage switching (ZVS) three-phase converters and related pulse width modulation (PWM) schemes. The book also includes: A thorough introduction to soft-switching techniques, including the classification of soft-switching for three phase converter topologies, soft-switching types and a generic soft-switching pulse-width-modulation known as Edge-Aligned PWM A comprehensive exploration of classical soft-switching three-phase converters, including the switching of power semiconductor devices and DC and AC side resonance Practical discussions of ZVS space vector modulation for three-phase converters, including the three-phase converter commutation process In-depth examinations of three-phase rectifiers with compound active clamping circuits Perfect for researchers, scientists, professional engineers, and undergraduate and graduate students studying or working in power electronics, Soft-Switching Technology for Three-phase Power Electronics Converters is also a must-read resource for research and development engineers involved with the design and development of power electronics.

Download or read book Development of Three phase Source Inverter for Research and Laboratories written by Henry O. Amadasu and published by . This book was released on 2011 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The small-scale implementation of a power system that explores a three-phase voltage source inverter (VSI) controlled by a Field Programmable Gate Array (FPGA) is investigated in this thesis. The Naval Postgraduate School (NPS) continuously develops new power systems that explore FPGA control of power electronics. The development, testing and documentation of a three-phase voltage source inverter interfacing with an FPGA and hardware is focused on in this thesis. The development of a three-phase VSI, the thermal and power loss analysis of a three-phase VSI and the hardware interface between the FPGA and the three-phase VSI used for research and laboratory procedures at NPS are particularly concentrated on.

Download or read book An Experimental Verification of the Binary Method for Three phase Voltage Source Inverter written by and published by . This book was released on 2005 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of Three phase AC Power Electronics Converters written by Fei "Fred" Wang and published by John Wiley & Sons. This book was released on 2023-11-08 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: DESIGN OF THREE-PHASE AC POWER ELECTRONICS CONVERTERS Comprehensive resource on design of power electronics converters for three-phase AC applications Design of Three-phase AC Power Electronics Converters contains a systematic discussion of the three-phase AC converter design considering various electrical, thermal, and mechanical subsystems and functions. Focusing on establishing converter components and subsystems models needed for the design, the text demonstrates example designs for these subsystems and for the whole three-phase AC converters considering interactions among subsystems. The design methods apply to different applications and topologies. The text presents the basics of the three-phase AC converter, its design, and the goal and organization of the book, focusing on the characteristics and models important to the converter design for components commonly used in three-phase AC converters. The authors present the design of subsystems, including passive rectifiers, inverters and active rectifiers, electromagnetic interference (EMI) filters, thermal management system, control and auxiliaries, mechanical system, and application considerations, and discuss design optimization, which presents methodology to achieve optimal design results for three-phase AC converters. Specific sample topics covered in Design of Three-phase AC Power Electronics Converters include: Models and characteristics for devices most commonly used in three-phase converters, including conventional Si devices, and emerging SiC and GaN devices Models and selection of various capacitors; characteristics and design of magnetics using different types of magnetic cores, with a focus on inductors Optimal three-phase AC converter design including design and selection of devices, AC line inductors, DC bus capacitors, EMI filters, heatsinks, and control. The design considers both steady-state and transient conditions Load and source impact converter design, such as motors and grid condition impacts For researchers and graduate students in power electronics, along with practicing engineers working in the area of three-phase AC converters, Design of Three-phase AC Power Electronics Converters serves as an essential resource for the subject and may be used as a textbook or industry reference.

Download or read book Implementation of Drive Circuit for Three Phase Inverter using VLSI written by Jayashree Awati and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three phase inverter (using MOSFETs) is designed successfully.The PWM pulses are generated using VHDL.The Field Programmable Gate Array is used.The four modes 00 to 11 are used to change the frequencies, four different frequencies are used.The readmode index 0000 to 1010 are used to change the intensity or amplitude of the frequencies. Maximum intensity will be achieved at 1010 readmode index.This is the design of Three Phase Inverter and provide the flexibility to change the frequency as well as amplitude or intensity of the circuit.These PWM pulses are used to the inverter by using IGBT also.The three inverter is very important for Agriculture field. Because most of the Agriculture pumps are run on Three-Phases.If the battery sources run on renewable energy then the Three- phase inverter is very useful.As four different frequencies are generated then this system becomes universal system because Every country they have different Mains supply frequency.

Download or read book Design of a New Configuration Three phase Multilevel Voltage Source Inverter written by Mahrous El-Sayed Ahmed and published by . This book was released on 2007 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Implementation of Three phase Inverters Using a TMS320F2812 Digital Signal Processor written by Duehee Lee and published by . This book was released on 2009 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis project was to design and build a three-phase inverter controlled by the TMS320F2812 DSP by Texas Instruments. The TMS320F2812 is controlled in order to make inverters generate output waveforms which mimic the main reference signal coming from a computer. The project included building three different inverters on two platforms including auxiliary circuits and designing five pulse width modulation (PWM) switching algorithms for the inverters. The motivation was that a newly designed inverter was required as an intermediary device between a computer and a laboratory-scaled model of a wind turbine. This type of wind turbine is used to educate students and engineers and to extract experimental wind power data. However, since commercial inverters don't follow the main reference signal which is sent from the computer in order to operate the laboratory-scaled wind turbine, a controllable and variable inverter needed to be designed to receive that signal. The results are as follows. The voltage source inverter (VSI) and the current-controlled voltage source inverter (CC-VSI) were built on the VSI platform, and the current source inverter (CSI) was built on the CSI platform. Furthermore, the TMS320F2812's analog digital converter (ADC) driver circuit and the output LC filter were also designed as auxiliary circuits. Five PWM switching programs were written; three switching algorithms for the VSI, and one algorithm each for the CC-VSI and the CSI. The output waveforms from the combination of hardware and software mentioned above were captured, and they follow the main reference signal very well. Although each of the inverters performed well, the VSI in combination with the Space Vector PWM switching algorithm produced the cleanest output voltage waveforms with the least amount of noise. The inverters built in this thesis project can be applied to the laboratory-scaled wind turbine, the maximum power tracking in solar panels, and equipment for analyzing digital signal processing. However, before using the inverters in those applications, much work remains to be done to solve the problems related to the signal distortion caused by the dead band time, harmonic signals caused by the fixed switching frequency, and the reliability issues caused by mounting on the bread board. In conclusion, although this thesis does not illustrate the entire process of or explain every requirement for building the three inverters, enough information about the topology of the inverters, the hardware design, and the PWM switching algorithms is provided in this thesis to enable one to remake all three of the three-phase inverters.

Download or read book Dynamic Modeling and Analysis of the Three phase Voltage Source Inverter Under Stand alone and Grid tied Modes written by Faleh A. Alskran and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing energy demand, rising oil prices, and environmental concerns have forced attention to alternative energy sources that are environmentally friendly and independent of fossil fuels. Renewable energy sources (RES) have become an attractive alternative to the traditional energy sources for electric power generation. However, one of the main challenges of RES adaption arises when connecting RES to the electric grid. Voltage source inverters (VSIs), typically, connect RES to the electric grid. Similar to any engineering system, detailed dynamic models of the VSIs are needed for design and analysis purposes. However, due to the non-linearity of VSIs, development of dynamic models that can accurately describe their behavior is a complex task. In this thesis, a detailed averaged-state-space model of the two-level three-phase space vector pulse width modulation VSI and its companion LCL filter is derived. Because VSIs can operate under stand-alone and grid-tied modes, two models were derived for each case. In the derived models, the VSI modulation index m and phase angle ø are initially considered constant. In practice, however, these parameters are considered the main control parameters. To model these parameters as control inputs, small-signal models of the VSI under stand-alone and grid-tied modes were derived. To verify the accuracy of the developed large-signal and small-signal models, Matlab/Simulink simulations were carried out. The simulation results were compared against the models results. Moreover, the models were verified through lab experiments. The developed models can be used as design and analysis tools. In addition, the developed models can be used as fast and efficient simulation tools for system studies, when the modeling of switching transients is not needed. Nowadays, the number of VSIs connected to the electric grid is growing exponentially. The amount of time and computation needed to simulate VSIs using simulation software packages can be significantly decreased by the use of the developed models.

Download or read book Design Approach for a Three Phase Voltage Source Inverter with Low Harmonic Distortion for a Wide Range of Operating Conditions written by Karin Rezende Feistel and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: DC-AC power electronic converters, or inverters, are frequently used in AC motor drives, in AC grid interfaces of renewable energy sources and energy storage units and to supply AC power to loads in stand-alone systems. They are usually of the Voltage Source Inverter (VSI) type and are expected to operate either at a constant frequency and voltage magnitude or within a small range. Passive Low-Pass Filters (LPF) are employed to attenuate the switching harmonics providing outputs voltages with low Total Harmonic Distortion (THDV), in the order of 1% to 3%. This is a well-established commercial technology. This research work concerns a three-phase 6-switch VSI that is expected to provide an extremely low THDV for the output voltage, about 0.5%, with a wide range for the voltage magnitude, 10% to 100% of rated voltage, and frequency in the range of DC to 1 kHz . In such a case, the design of the output LPF becomes more complicated, mostly considering that the load can also vary in a wide range. The target application for this inverter is the emulation of AC rotating machines. Usually linear power amplifiers are employed in this application but they are very expensive, mostly in the power range of tens to hundreds of kVA. This Thesis proposes an approach for designing a second-order LC LPF for the demanding conditions stated above. The VSI is controlled with Sinusoidal Pulse-Width Modulation (SPWM) and an algorithm that considers the magnitudes of the voltage components of the VSI and the attenuation/amplification of the LPF is developed. It computes suitable values for L and C that allow the system to provide the required fundamental component and THDV with the VSI operating in the linear SPWM mode. Then, a voltage control loop is designed for the VSI and an assessment of the converter losses and efficiency is carried out. The performance of the proposed system is verified by means of simulation with MATLAB and PSIM.

Download or read book Modeling and Control of a Three Phase Voltage Source Inverter with an LCL Filter written by Aratrik Sarkar and published by . This book was released on 2015 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the design and control of three phase inverters. Such inverters are used to produce three-phase sinusoidal voltages and currents from a DC source. They are critical for injecting power from renewable energy sources into the grid. This is especially true since many of these sources of energy are DC sources (e.g. solarphotovoltaic) or need to be stored in DC batteries because they are intermittent (e.g. windand solar). Two classes of inverters are examined in this thesis. A control-centric designprocedure is presented for each class. The first class of inverters is simple in that they consist of three decoupled subsystems. Such inverters are characterized by no mutualinductance between the three phases. As such, no multivariable coupling is present and decentralized single-input single-output (SISO) control theory suffices to generate acceptable control designs. For this class of inverters several families of controllers are addressed in order to examine command following as well as input disturbance and noiseattenuation specifications. The goal here is to illuminate fundamental tradeoffs. Such tradeoffs include an improvement in the in-band command following and outputdisturbance attenuation versus a deterioration in out-of-band noise attenuation. A fundamental deficiency associated with such inverters is their large size. This can be remedied by designing a smaller core. This naturally leads to the second class of inverters considered in this work. These inverters are characterized by significant mutualinductances and multivariable coupling. As such, SISO control theory is generally not adequate and multiple-input multiple-output (MIMO) theory becomes essential for controlling these inverters.

Download or read book Design Considerations of a Novel Three phase Multi level Inverter written by Tuofei Chen and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Countries around the world are committing to renewable generation and electrification targets in an effort to reduce greenhouse gas emissions. During this transition, power electronic inverters are becoming increasingly ubiquitous as the interface between different renewable sources and electrical loads. Today, utility-scale solar and battery energy storage systems mainly rely on single-stage central inverters to connect to the grid. Operating at a string voltage around 1kV, utility-scale solar often needs a medium voltage (MV) transformer to interface with the MV grid. Due to the MV transformer's cost, maintenance, and losses, multilevel inverters (MLIs) are investigated as a promising transformer-less alternative. Existing three-phase MLIs are designed with single-phase inverter modules or three-phase inverter modules as basic building blocks. Single-phase modules suffer from the need for large DC link capacitance to buffer the 120 Hz ripple for grid-tied applications. Three-phase modules do not require bulky input capacitance but rely on more complex topologies and result in poor efficiency. In this thesis, we propose a novel two-phase module-based MLI, that eliminates the need for bulky input capacitance while also enhancing the efficiency of a typical three-phase module. We achieve this by designing a power sharing scheme among inverter modules that allows the inverter module to operate at peak or zero power for most of the grid cycle. The proposed MLI design and power sharing scheme pose challenges for a distributed controller. This work leverages iterative and structurally constrained linear quadratic regulators (LQRs) to control the MLI system, and PLECS simulations are conducted to verify the efficacy of the controller. We build an experimental 110V DC input, 208 Vrms three-phase AC output, 1~kW 5-level prototype with > 95% efficiency to demonstrate the proposed MLI and controller design. With the same inverter module, we compare the efficiency of the proposed design to the conventional MLI design, where all modules share phase power evenly. We demonstrate that the proposed design consistently outperforms the conventional design in efficiency, with > 25% loss reduction at light load conditions. Lastly, we propose a formal way of optimizing the power sharing scheme for any multi-converter system based on the efficiency characteristics of the converter module.

Download or read book Three Phase Voltage Source Inverter with Very High Efficiency Based on SiC Devices written by Hani Muhsen and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Fabrication of a Three Phase Voltage Source with Computer Controlled Supply Quality written by Pradeep K. Nayar and published by . This book was released on 1996 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of a Double end Sourced Multi chip Power Module and a High Power density Three phase Inverter written by Miao Wang and published by . This book was released on 2016 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study's second contribution is to propose a simplified circular-loop model for rapid estimation of the near-field radiation noise that is exhibited by the power module. In the study, the magnetic field was calculated on a measurement plane above the power module, which was then verified by experimental measurement using near-field probes and a spectrum analyzer. The DES layout was found to decrease the peak magnetic field level; more importantly, it generated less magnetic flux in the area in which the gate-driver board was placed. This indicates that the DES layout will lead to lower radiative interference to the power electronics in the layout's surrounding environment. The work's third contribution is to propose a three-phase inverter that accommodates this unique structure. The design ensures that each single-phase module is symmetrically sourced from the DC bus-bar. In addition, the design increases the compactness of the inverter system by incorporating a vertical-integrated DC link and sandwiching the gate-driver board between the DC bus-bar and the power modules. The power stage of this three-phase inverter weights ~705 grams and is successfully operated at 300 V DC input voltage with 0.85 modulation index and 70 A peak output current. This allowed the tested power density to attain up to 21.9 kVA/kg. Finally, the efficiency of the three-phase inverter was evaluated; it was found to attain a peak efficiency of 98.9 percent. In summary, this work presents a new layout for multi-chip SiC MOSFET power modules and demonstrates improved performance compared with conventional designs. A prototype of the three-phase inverter that adopts the DES layout power modules was built with a power density of 21.9 kVA/kg and 98.9 percent peak efficiency.

Download or read book Three Phase Voltage Source Inverter with Very High Efficiency Based on SiC Devices written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hybrid 2D 3D Space Vector Modulation for Three phase Voltage Source Inverter written by and published by . This book was released on 2013 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three-phase voltage source inverters are increasingly employed in power systems and industrial applications. Various pulse width modulation strategies have been applied to control the voltage source inverters. This dissertation presents a hybrid 2D-3D space vector modulation algorithm for three-phase voltage source inverters with both three-wire and four-wire topologies. The voltage magnitude and phase angle of the inverters fundamental output phase voltage are precisely controlled under either balanced or unbalanced load conditions, and hence, the space vector algorithm offers synchronization controllability over generation control in distributed generation systems. The numerical efficiency and simplicity of the proposed algorithm are validated through conducting MATLAB/Simulink simulations and hardware experiments. Mathematical description and harmonic analyses of output phase voltages of three-phase voltage source inverter which employs a hybrid 2D-3D SVM are presented in this dissertation. Explicit time domain representation of the harmonic components in addition to the total harmonic distortion of the output phase voltages are given in terms of system and switching parameters. The dissertation also investigates the harmonic characteristics and low total harmonic distortion performance against the linearity of modulation region which helps in the harmonic performance and design studies of such inverters employing the hybrid 2D-3D SVM. Experimental results are used to validate these analyses. In addition, the performance and the harmonic contents of the inverter output phase voltage when applying the proposed hybrid 2D-3D SVM are compared to that obtained from conventional 2D SVM and 3D SVM. As a result, the proposed new algorithm shows advantages in terms of low total harmonic distortion and reduced harmonic contents in both three-wire and four-wire systems.