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Showing 1 to 20 of 25 for “"Space vector modulation"”.
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Space Vector Modulation and Control of Multilevel Converters
… Accordingly, this dissertation deals with the space vector modulation of three-level converters and introduces a computationally very efficient three-level space vector modulation algorithm that is experimentally verified. Furthermore, the proposed space vector modulation algorithm is …
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Modified Space Vector Modulation for a Zero-Voltage Transition Three-Phase to DC Bi-directional Converter
A modified space vector modulation algorithm for a zero-voltage transition three-phase voltage source inverter/boost rectifier is presented. The converter is intended for high performance medium power applications requiring bi-directional power flow. The proposed modified space vector modulation …
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Analysis and Comparison of Space Vector Modulation Schemes for Three-Leg and Four-Leg Voltage Source Inverters
Several space vector modulation schemes have been analyzed for three-leg and four-leg voltage source inverters. The analysis is performed with respect to a) switching losses, b) total harmonic distortion, c) peak-to-peak ripple in the line current and d) the ease of digital implementation. The …
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High Performance Power Converter Systems for Nonlinear and Unbalanced Load/Source
… PWM methods, especially two-dimensional space vector modulation schemes, three-dimensional space vector modulation schemes are proposed for four-legged voltage source converters, including inverters and rectifiers. The four-legged power converters with three-dimensional space vector …
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Control Design and Analysis of an Advanced Induction Motor Electric Vehicle Drive
… software are introduced, and the different modulation techniques tested are described. A software simulation package is developed to assist in the control design and analysis of the drive system. Next, to establish the efficiency gains obtained by using space vector modulation in the …
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Analysis, simulation and modeling of three-level VSIs
… high-power high-voltage applications. Complete Space Vector Modulation (SVM) algorithm is developed for a three-phase, three-level converter. Special attention is given to minimization of output ripple and voltage balance of the dc-link input capacitors. Verification of the proposed SVM …
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Development of a Testbed for Evaluation of Electric Vehicle Drive Performance
… The second test analyzes the difference between space vector modulation (SVM) and current-band hysteresis. The final test evaluates the effect of both soft-switching and SVM on drive performance. The tests begin with a steady state analysis of efficiency over a wide range of torque and speed. …
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Analysis and Design of Paralleled Three-Phase Voltage Source Converters with Interleaving
… The analysis performed considers the effects of modulation index, pulse-width-modulation (PWM) schemes, interleaving angle and displacement angle. Based on the analysis the method to optimize interleaving angle is proposed. Secondly, the control methods for the common mode (CM) circulating …
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A DSP based variable-speed induction motor drive for a revolving stage
… waveforms are generated by the DSP using the space vector modulation technique. In order to satisfy some operating conditions for safe and agreeable operation, a look-up table, which is used to give command voltage and speed signals in software, is applied to limit the maximum speed and …
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Towards High Efficiency and High Power Density Converter: System Level Design, Modulation, and Active EMI Filters
… 3-L TNPC inverter also imposes challenge to its modulation and control, a propoer modulation and control shceme need to be chosen to enable better inverter performance in terms of efficiency, neutral point balancing and electromagnetic interference (EMI). Morever, to shrink the EMI filter size …
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The Direct Torque Control of Induction Motors
… motors with particular emphasis being given to vector control and direct torque control techniques. Modern control strategies such as vector control and direct torque control are investigated as well as the conventional methods such as open loop (constant V/f) operation. A number of different …
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New Modulation Method and Control Strategies for Power Electronics Inverters
… of the Selective Harmonic Elimination (SHE) and Space Vector Modulation (SVM) methods in conjunction with a slightly modified Fundamental Phase Shift Compensation (FPSC) technique to generate balanced voltages and manipulate voltage harmonics at the same time. The proposed strategies are …
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Analysis and Evaluation of Soft-switching Inverter Techniques in Electric Vehicle Applications
… caused by short pulses is presented and a space vector modulation scheme is proposed to alleviate the effect. To effectively analyze the soft-switching inverters' performance, a simulation based electrical modeling methodology is developed. Not only it extends the EMI noise analysis to the …
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Modeling, Analysis, and Design of Distributed Power Electronics System Based on Building Block Concept
… are developed for half-bridge PEBB module and Space Vector Modulation (SVM). These models keep the exact information of the discontinuous SVM and the common mode component of the three-phase system. They can be used to construct the computer models of a power electronics system the same as the …
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Modeling and Control of Parallel Three-Phase PWM Converters
… control concept that uses variable zero-vectors in the space-vector modulation (SVM) of the converters. The control can be implemented within an individual converter and is independent from the other control loops for the converter. Therefore, it greatly facilitates the design and …
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Analysis and design of computationally efficient modulation schemes for Three Phase Three Switch rectifier for transportation electrification
… in charging infrastructures, is achieved by Space Vector (SV) based modulation schemes. This thesis proposes a novel modulation technique for TPTS rectifier. The general SV modulation scheme xxvii xxviii used to control the TPTS is reviewed in this thesis. Numerous switching combinations …
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Nonlinear Analysis and Control of Standalone, Parallel DC-DC, and Parallel Multi-Phase PWM Converters
… One of these control schemes combines space-vector modulation and variable-structure control. It achieves constant switching frequency within the boundary layer and a good compromise between the transient and steady-state performances.
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Analysis of Inductor-Coupled Zero-Voltage-Transition Converters
… for restrictions of this concept, a modified space-vector modulation (SVM) scheme also is introduced. A soft-switching topology changes the duty ratios of the converter, which affects the controllability of the converter. Therefore, this dissertation selects resolution of this issue as one of …
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A Power Conditioning System for Superconductive Magnetic Energy Storage based on Multi-Level Voltage Source Converter
… Three-phase AC is implemented with a three-level space vector modulation (SVM) that can reduce the number of switching and harmonic contents from the output current. A closed-loop control system is also implemented for the VSC, and shows 600-Hz control bandwidth. The multi-level structure used …
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On the Circuit Oriented Average Large Signal Modeling of Power Converters and its Applications
… nonlinear transfer characteristics for standard Space Vector Modulation (SVM), which lead to high input current distortion and output voltage ripple inadmissible in telecommunications applications. Physical insight provided by this average model led to the development of a combined modified SVM …
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