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 and Implementation of a Three Phase Inverter Using Pulse Width Modulation written by Robert Malcolm Phillips and published by . This book was released on 2005 with total page 94 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 Advances in Communication Signal Processing VLSI and Embedded Systems written by Shubhakar Kalya and published by Springer Nature. This book was released on 2019-11-30 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises selected peer-reviewed papers from the International Conference on VLSI, Signal Processing, Power Systems, Illumination and Lighting Control, Communication and Embedded Systems (VSPICE-2019). The contents are divided into five broad topics - VLSI and embedded systems, signal processing, power systems, illumination and control, and communication and networking. The book focuses on the latest innovations, trends, and challenges encountered in the different areas of electronics and communication, and electrical engineering. It also offers potential solutions and provides an insight into various emerging areas such as image fusion, bio-sensors, and underwater sensor networks. This book can prove to be useful for academics and professionals interested in the various sub-fields of electronics and communication engineering.

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 Design and Implementation of DC written by Surya Prakash and published by . This book was released on 2019-04-06 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inverters and AC Drives written by Narayanaswamy P.R. Iyer and published by Springer. This book was released on 2024-08-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Successful development of power electronic converters and converter-fed electric drives involves system modeling, analyzing the output voltage, current, electromagnetic torque, and machine speed, and making necessary design changes before hardware implementation. Inverters and AC Drives: Control, Modeling, and Simulation Using Simulink offers readers Simulink models for single, multi-triangle carrier, selective harmonic elimination, and space vector PWM techniques for three-phase two-level, multi-level (including modular multi-level), Z-source, Quasi Z-source, switched inductor, switched capacitor and diode assisted extended boost inverters, six-step inverter-fed permanent magnet synchronous motor (PMSM), brushless DC motor (BLDCM) and induction motor (IM) drives, vector-controlled PMSM, IM drives, direct torque-controlled inverter-fed IM drives, and fuzzy logic controlled converter-fed AC drives with several examples and case studies. Appendices in the book include source codes for all relevant models, model projects, and answers to selected model projects from all chapters. This textbook will be a valuable resource for upper-level undergraduate and graduate students in electrical and electronics engineering, power electronics, and AC drives. It is also a hands-on reference for practicing engineers and researchers in these areas.

Download or read book Design and Implementation of Three Phase Three Level T Type Inverters with Droop Control for Parallel Operation written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling and Mitigation of Simultaneous Switching Events in Power Converters written by Peter Meyer and published by . This book was released on 2020 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: In multi-phase inverter systems where phase legs share a common DC bus, simultaneous switching in two or more legs can result coupling between the two transients caused by shared commutation loop inductance. This coupling effect can cause an undesirable increase in transient voltage stresses and switching losses.This effect has received little attention in the literature. In this work, the potential simultaneous switching events that can occur within a three-phase inverter are evaluated across a range of conditions using a two-phase test circuit. The knowledge gained from this work can then be used to inform the design of simultaneous switching avoidance algorithms.In the literature, some hardware-based solutions have been proposed to mitigate this issue, through active gate drive control or switching lockout circuitry. Previously, an asymmetric PWM method was proposed to avoid simultaneous switching between phases of a three-phase inverter. In this method, avoidance is performed by the PWM scheme without introducing any error into the inverter's output voltage. Thus, no further control modifications are required. However, this approach imposes limitations on both the control bandwidth and implementation of simultaneous switching avoidance between additional three-phase inverters sharing the same DC link. To overcome these limitations, an error vector approach is proposed that modifies the voltage command to avoid regions of simultaneous switching. In doing so, compensation must be performed to avoid control degradation due to the injected voltage errors. The result of this work is a pair of methods for avoiding intra-inverter simultaneous switching with differing pros and cons regarding implementation and their impacts on inverter output distortion.

Download or read book Implementation of Model Predictive Control for Three Phase Inverter written by Ihab Mohamed and published by . This book was released on 2017-05-13 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Frequency Oscillation Reduction Algorithm for Six step Operation of Three Phase Inverters written by Ziwei Ke and published by . This book was released on 2015 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: A power inverter, or inverter, is an electronic device or circuitry that converts direct currents (DC) to alternating currents (AC) in the power electronics family. A three-phase inverter converts DC current to three-phase AC current. Inverters, especially three-phase inverters, have been widely used in many fields including renewable energy applications such as interface circuits between wind turbines and the electric grid, transportation electrification such as machine drives in electric and hybrid electric vehicles, ships and aircrafts, general purpose drives for industrial applications such as pumps, fans and compressors, and the power converter circuits in medical equipment such as Magnetic Resonance Imaging (MRI) and medical power supplies. In AC machine drive systems, the three-phase inverters can be operated by the Pulse Width Modulation (PWM) control or six-step control. With the PWM control, the input reference voltages are modulated by a high frequency carrier wave. The top switch of the phase leg will be turned on when the reference voltage is greater than the carrier. In six-step operation control, the top switch of the phase leg will be turned on when the reference voltage is greater than zero. The advantages of using PWM control include low Total Harmonic Distortion (THD) in phase currents and controlled current. Compared to the PWM control, the six-step operation has advantages containing reduced switching losses, better utilization of DC bus voltage, and extended speed capability. In analog implementation of the six-step control, the control signals of the switches are generated by a comparator in the electronic circuit. Hence, the switches will be turned on and off at the phase voltage zero crossing points. In digital implementation, however, power electronics may not be able to switch on and off exactly at the zero crossing points of the phase voltage due to the limited resolution of the sampled phase voltage command, which will result in a DC offset in the phase voltage and cause a low frequency oscillation in the phase current. The low frequency oscillation will create issues such as higher power loss, lower efficiency, and excessive heat that may permanently demagnetize permanent magnets on the rotor for a permanent magnet (PM) synchronous machine. This research investigates a control method to significantly reduce the low frequency oscillation phase current for the six step operation of a three-phase inverter in digital implementation. The proposed control method using asymmetric PWM ensures that power electronics switch on and off exactly at the voltage zero crossing points. The algorithm calculates the duty ratio when the phase voltage command crosses zero from positive to negative or from negative to positive. In addition, the control algorithm was simulated and tested on a three-phase RL load and a PM synchronous machine. Both simulation and experimental results demonstrate that the proposed control algorithm can reduce the low frequency oscillation components in the phase current by more than 90%.

Download or read book Design a Three phase Inverter Using a Single Chip High Voltage Three phase MOS Gate Driver written by Muhamad Yusni Yunus and published by . This book was released on 1994 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fpga Controlled Three Phase Inverter Based Bldc Motor Drive written by Banerjee Atanu and published by LAP Lambert Academic Publishing. This book was released on 2015-02-11 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a brief overview of the Brush less D.C Machine (BLDCM) covering its construction, classifcation, control, usage etc.Presented further are two possible modeling strategies of this machine and their drawbacks. An attractive method by solving loop equations for instantaneous current is also discussed. This is followed by the simulation of a BLDC motor in the abc/dq frame by using MATLAB/SIMULINK. Some simulation results are presented. Also included are the results of some tests conducted on the machine. Due to the unavailability of the stator neutral, the tests to determine d and q-axis inductances have failed. The analytical reasons are presented. A new method for controlling the drive by a efficient digital controller called Field Programmable gate Array(FPGA) has been discussed. Three phase 1200 voltage source inverter has been simulated successfully using FPGA. The control hardware comprising of FPGA, driver circuit of three phase inverter & inverter module has been run successfully. Results of that test have been presented.

Download or read book High Performance Current Regulation for Unity Power Factor Current Source Inverter fed Induction Motor Drives written by H. R. Tayebi and published by . This book was released on 1997 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this research work optimal control of a CSI induction machine drive for highperformance current regulation and unity power factor is studied. A model-basedoptimal predictive control scheme, generalized predictive control (GPC), is developedfor high performance DC link current regulation in a vector controlled CSI-fed inductionmachine drive. The algorithm models the drive circuits using a simple RL structure. Theparameters of the model are estimated on-line to track system variation using a RecursiveLeast Square estimator. This model is used to predict the DC link current output over acertain length of time ahead and the best voltage control signal is generated throughminimising a quadratic cost function. The controller is also adaptive to motor parametersvariation and speed command changes and load disturbances. The performance of thecontroller in improving the dynamic response of a phase controlled CSI drive, has beencompared with that of a PI controller and found to be superior.An experimental rig was developed for testing the control algorithm which comprises apower unit and a control unit. The power unit consists of a full-wave controlled rectifier,DC link filter, inverter and induction motor. The control unit consists of a 486DX4-100personal computer which was connected to the power unit through an interface board.Programming of the system was done with the C and assembly languages. It was verifiedexperimentally that GPC control gives faster and smoother performance to the system. Using GPC as the DC link current controller, an IGBT based rectifier was developed for a high performance CSI drive with unity power factor and sinusoidal supply current. Space vector modulation (SVM) technique is proposed as an efficient modulation strategy for pulse width modulation of the rectifier switches. Compared with the traditional triangulation technique, space vector PWM waveforms are shown to have a better performance with respect to the ease of generation and efficiency and are suitable for real-time applications. Furthermore the SVM control can ensure zero degree phase displacement between input voltage and current. This is obtained by using a three-phase input LC filter and adjusting the phase angle of the input reference voltage corresponding to the input current variations. The input filter also eliminates the high order harmonics due to high frequency switching of IGBTS.

Download or read book Analog Design Issues in Digital VLSI Circuits and Systems written by Juan J. Becerra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analog Design Issues in Digital VLSI Circuits and Systems brings together in one place important contributions and up-to-date research results in this fast moving area. Analog Design Issues in Digital VLSI Circuits and Systems serves as an excellent reference, providing insight into some of the most challenging research issues in the field.

Download or read book Control of Voltage Source Inverters Using PWM SVPWM for Adjustable Speed Drive Applications written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulse Width Modulation variable speed drives are increasingly applied in many new industrial applications that require superior performance. Recently, developments in power electronics and semiconductor technology have lead improvements in power electronic systems. Hence, different circuit configurations namely multilevel inverters have become popular and considerable interest by researcher are given on them. Variable voltage and frequency supply to a.c drives is invariably obtained from a three-phase voltage source inverter. A number of Pulse width modulation (PWM) schemes are used to obtain variable voltage and frequency supply. The most widely used PWM schemes for three-phase voltage source inverters are carrier-based sinusoidal PWM and space vector PWM (SVPWM). There is an increasing trend of using space vector PWM (SVPWM) because of their easier digital realization and better dc bus utilization. This project focuses on step by step development SVPWM implemented on an Induction motor. The model of a three-phase a voltage source inverter is discussed based on space vector theory. Simulation results are obtained using MATLAB/Simulink environment for effectiveness of the study.

Download or read book High performance Current Regulation for Voltage source inverter fed Induction Motor Drives written by Rosemary Anne Norman and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: