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Showing 1 to 20 of 23 for “"Voltage Source Inverter (VSI)"”.
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3-Phase gate-turn off thyristor inverter
… a standard 3-phase Induction Motor driven by a Voltage Source Inverter (VSI) are studied. A full 3-phase Variable Speed Drive (VSD) and its controller have been designed, constructed and tested. Gate Turn-Off Thyristors (GTO's) are used as the main switching elements in the Inverter stage of the …
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Design of an Arbitrary Waveform Generator for Power System Perturbation
In this thesis, the design of a voltage-source inverter (VSI)-based three-phase impedance analyzer's perturbation injection unit (PIU) is described including all relevant power stage and control design. Both series and shunt injection are examined from .1 Hz to 1000Hz. Both types of injection are …
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Fault detection design for three-phase voltage source inverter in power train applications
… methods tailored specifically for three-phase inverters, critical components within the propulsion systems of Electric Vehicles (EVs) and drive systems in general. A notable focal point of this study involves the application of advanced signal processing techniques to adeptly identify and …
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On Methodology for Verification, Validation and Uncertainty Quantification in Power Electronic Converters Modeling
… accuracy of the switching model of a three-phase Voltage Source Inverter (VSI) is quantitatively assessed following the proposed procedure. Accordingly, this thesis describes the hardware design and development of the switching model of the three-phase VSI.
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Frequency Control of Wind and PV Based Isolated Microgrid
… the grid is not available. The frequency and voltage fluctuation are major problems in such remote microgrid due to intermittent nature of renewable resources like wind and solar PV. The frequency fluctuation should remain within acceptable limits for stable operation of the remote microgrid. …
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A Distributed Digital Control Architecture for Power Electronics Systems
… components are explained. A 100 kVA three-phase voltage source inverter (VSI) prototype was built and tested using the distributed controller approach to demonstrate the feasibility of the proposed concept.
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High Power Density and Overcurrent Protection Challenges in the Design of a Three-Phase Voltage Source Inverter for Motor Drive Applications
The voltage source inverter (VSI) is certainly the most popular topology used in dc to ac power conversion. Virtually every commercial electric motor is driven by a VSI. There is a need for smaller and more efficient drives in high performance applications that is dictating unprecedented power …
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Development of pulse-width-modulation techniques for multi-phase and multi-leg voltage source inverters
… with supply coming from a single multi-phase voltage source inverter (VSI). Various pulse width modulation (PWM) schemes have been developed for multi-phase machines with concentrated and distributed windings, utilising both carrier-based PWM and space vector PWM (SVPWM) approaches. However, …
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Influence of higher time harmonics on the electrical and mechanical performance of an inverter-fed squirrel cage induction motor
… reliability and low maintenance required, small inverter-fed induction motors (1.5 kW to 25 kW) have earned a reputation and are utilized more and more frequently in industry for variable speed applications. The applied voltage and current waveforms are generally quite non-sinusoidal and polluted …
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Facilitating seamless transitions in flexible microgrids: A unified control systems framework for enabling multi-mode inverters
The increasing integration of renewable energy sources into the power grid offers both opportunities and challenges for grid performance, stability, and reliability. Inverter-based microgrids offer a promising solution for the large-scale integration of renewable resources, which often come with a …
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Control Strategies for High Power Four-Leg Voltage Source Inverters
… strategies to ensure a high performance level in inverter-fed power systems. In particular, specific loading conditions present interesting challenges to inverter-fed, high power systems. No-load, unbalanced loading, and non-linear loading each have unique characteristics that negatively influence …
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Control of a Single-Phase Grid-Connected Voltage Source Inverter with LCL Filter
… and efficiency of a single-phase grid-connected voltage source inverter (VSI) with an LCL filter that is used in renewable energy power conditioning applications. There are two main controllers that need to be designed: an external DC-bus voltage controller to balance the power flow coming into …
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Improvements in direct torque control of induction motors
… and a higher harmonic distortion of the stator voltage and current waveforms compared with other methods, such as Field Oriented Control (FOC). It is the aim of this work to improve the control system in order to eliminate or considerably reduce the undesirable features that exist with the …
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Modeling of Power Electronics Distribution Systems with Low-frequency, Large-signal (LFLS) Models
… also presents one of the new models in detail, a voltage source inverter (VSI), and explains how the model can be modified to capture low frequency harmonics that are usually phenomena modeled only with switching models. The process of implementing these different phenomena is discussed and the …
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Comprehensive loss optimization of induction motor drives
… such as the machine stator and rotor windings, inverter and dc-link. Component-level loss minimization, however, will not guarantee minimum total loss in the drive system. So, a system-level loss minimization method is proposed using a comprehensive loss model, to achieve true minimum total …
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Three-phase inverter for motor drive applications
Embargo set by: Colleen Fallaw for item 102793 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system
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Improvement of Stability of a Grid-Connected Inverter with an LCL filter by Robust Strong Active Damping and Model Predictive Control
… control methods for a three-phase grid-connected voltage source inverter (VSI) accompanied by an inductive-capacitive-inductive (LCL) filter. A challenge of current control for the VSI is LCL filter resonance near to the control stability boundary, which interacts with the inverter control …
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Development of new methods for nonintrusive induction motor energy efficiency estimation
… induction motors operating on sinusoidal supply source (line-fed). The method uses a modified inverse Г-model equivalent circuit with series core loss arrangement to mitigate the inherent problems of higher computational burden and parameter redundancy associated with the conventional equivalent …
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Coordinated active power reduction strategy for voltage rise mitigation in LV distribution network
… direction and this could result in a sudden voltage rise. These negative impacts on the network have discouraged the distribution network operators (DNOs) to allow increased PV penetration in the LV distribution network because some customers load, and equipment are sensitive to voltage …
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Multiple Three-Phase Induction Generators for Wind Energy Conversion Systems
… energy, i.e. energy generated from renewable sources such as wind, and also an increased emphasis on greener means for transportation. Some of the advantages multiphase machines offer over three-phase counterparts are better fault tolerance, smaller current and power per phase, and higher …
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