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About 6,390 papers for “Space vector modulation”

Synthetic space vector modulation

Rogers, L Warren · Calhoun: The Naval Postgraduate School Institutional Archive (Naval Postgraduate School) · 2013

Alternating current motors are used throughout the fleet because of their rugged construction and nearly maintenance free operation. Since the U.S. Navy is exploring and acting on the possibilities of DC distribution systems, the need exists for simple, reliable three-phase voltage source inverter (VSI) powered induction machines. Until recently, VSIs utilized a pulse width modulation (PWM) scheme controlling the frequency and amplitude of each phase. A novel and simple hardware centered VSI controller was designed, simulated, built and tested featuring a type of space vector modulation (SVM). Design criteria evaluated such as VSI frequency response, switching losses, dead-time and SVM switching sequences were considered. Specifically, modulo-6 and 12 synthetic SVM units were evaluated for future Department of Defense use.

Cited by 0

NATURAL SPACE VECTOR MODULATION

Ronald De Four, Emily Ramoutar, Juliet Romeo et al. · 2014

the written permission of the Copyright Owner, except in accordance with the provisions of the Copyright Act 1997 (Act No. 8 of 1997) or under the terms of a License duly authorized and issued by the Copyright Owner.

Cited by 0

Space Vector Pulse Width Modulation

Avinash Mishra, Swaraj Save, Rohit Sen · 2014

Abstract — The rapid development of high switching frequency power electronics in the past decade leads towards wider application of voltage source inverters in AC power generation. Therefore, this prompts the need for a modulation technique with less total harmonic distortion (THD) and fewer switching losses. Space vector pulse width modulation (SVPWM) provides a better technique compared to the more commonly used PWM or sinusoidal PWM (SPWM) techniques. SVPWM is a more sophisticated technique for generating a fundamental sine wave that provides a higher voltage, high reduction in the dominant harmonics and lower total harmonic distortion when used in an inverter. In SVPWM the complex reference voltage phasor is processed as a whole, therefore, interaction between three phases is exploited, and this strategy reduces the switching losses by limiting the switching. This paper will analyze the working and design of SVPWM and will provide comparative analysis of improved quality with the conventional methods. Index Terms — space vector pwm, space vector, pulse width modulation.

Cited by 0

Online adaptive space vector modulation

Victor Truong Thinh Lam, Georgios Papafotiou · IET conference proceedings. · 2023

In this paper, we present a new modulation method for multilevel three-phase inverters, called online adaptive space vector modulation (oaSVM). The task of a modulator is to reconstruct the desired voltage υ*from the available discrete voltage vectors that correspond to the inverter switch positions. State-of-the-art SVM chooses three voltage vectors that form the closest triangle containing υ*. On the other hand, oaSVM explores every possible triangle that contains υ*and selects the three voltage vectors such that the trade-off between inverter switching losses and load current total harmonic distortion (THD) is improved. Inverter switching constraints and neutral-point voltage balancing are also included. The resulting mixed-integer optimization problem is solved using a branch and bound method. Through MATLAB-simulations, the loss-THD trade-off between SVM and oaSVM will be compared and we show that oaSVM can improve the inverter's efficiency.

Cited by 1Open access

Space Vector Design Assisted Channel Modulation

Shuqing Lin, Yanfei Zhu, Zhi Yang · IEEE Access · 2024

With the design idea of the index modulation (IM), media-based modulation (MBM) has been attracted a lot of attention due to that it not only offers optional transmission channels for physical security but also transmits additional channel index (CI) information for enhancing the spectral efficiency. In order to enhance the exploration of both the antenna index (AnI) information and the CI information, space vector design aided channel modulation (SVD-CM) is proposed. Firstly, the SVD Modulator is designed for extending the spatial index additional information by utilizing two types of pulse amplitude modulation (PAM) and secondary PAM constellations. In the SVD Modulator, it is divided into three parts, the Part-I of which is used to generate one spatial vector A with <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$N_{\mathrm {t}}\times 1$ </tex-math></inline-formula> dimensions, the Part-II, -III of which are jointly designed into two spatial vectors: B and C with <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\frac {N_{\mathrm {t}} }{2}\times 1$ </tex-math></inline-formula> dimensions. Furthermore, aiming at carrying more CI information in the Channel Modulator, the spatial vector A is modulated by the specified CI vector with one part of CI bits into the quadrature component of the transmitted spatial MBM vector (TSMV). Two spatial vectors of B and C are modulated by two specified CI vectors with two other parts of CI bits into the in-phase component of the TSMV. Finally, the bit error probability of the SVD-CM is provided with the assumption of channel states information perfectly known at the receiver, and simulation results using the Monte Carlo method are presented to verify the advantage of the SVD-CM, in which the bit error rate (BER) performance achieved by the SVD-CM are better than the existing IM-, MBM-based schemes.

Cited by 0Open access

Zero Space Vector Placement Modulation Strategies

2009

This chapter contains sections titled: Space Vector Modulation Phase Leg References for Space Vector Modulation Naturally Sampled SVM Analytical Solution for SVM Harmonic Losses for SVM Placement of the Zero Space Vector Discontinuous Modulation Phase Leg References for Discontinuous PWM Analytical Solutions for Discontinuous PWM Comparison of Harmonic Performance Harmonic Losses for Discontinuous PWM Single-Edge SVM Switched Pulse Sequence Summary This chapter contains sections titled: References ]]>

Cited by 20

Multiphase Space Vector Pulse Width Modulation

John W. Kelly, Elias G. Strangas, John M. Miller · IEEE Power Engineering Review · 2002

Pole-phase modulation adjusts the pole-phase ratio of an induction machine and requires a multileg, multiphase inverter. This paper analyzes an n-leg n-phase inverter and presents techniques for n-phase space vector pulse width modulation (SVPWM). In particular, nine-phase SVPWM is developed and implemented on a nine-winding induction machine. The nine-phase SVPWM is compared to nine-phase sine-triangle PWM in terms of dc bus utilization.

Cited by 113

Multiphase space vector pulse width modulation

John W. Kelly, Elias G. Strangas, John M. Miller · IEEE Transactions on Energy Conversion · 2003

Pole-phase modulation adjusts the pole-phase ratio of an induction machine and requires a multileg, multiphase inverter. This paper analyzes an n-leg, n-phase inverter, and presents techniques for n-phase space vector pulse width modulation (SVPWM). In particular, nine-phase SVPWM is developed and implemented on a nine winding induction machine. The nine-phase SVPWM is compared to nine phase sine-triangle PWM in terms of DC bus utilization.

Cited by 163

Optimal Space Vector modulation for static converters

Jordan Pauleski Zucuni · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · 2019

This work proposes an optimal space vector modultation methodology based on the FCSMPC approach for static converters relying on a cost function in order to decide, among the redundant vectors, those which forms the switching sequence. Thus, computational algorithms are necessary for the detection of the vectors that encompass the reference, for the duty cycle calculation, cost function evaluation and aplication of the selected vectors over one sampling period. In this way, the proposed methodology is developed for three converters: i) Single Phase Full Bridge; ii) Three-Phase Two-Level; iii) Three- Phase NPC. In the last case, besides the output voltage to synthetize it is necessary to implement the DC bus capacitors voltage balancing, making it possible through the correct cost function formulation. Finally, a space vector modulator is described, which is essencial to implement the presented technique, being able to apply, in a simple way, any switching sequence with the associated duty cycles.

Cited by 0

Multilevel Multiphase Feedforward Space-Vector Modulation Technique

José I. Leon, Óscar López, Leopoldo G. Franquelo et al. · IEEE Transactions on Industrial Electronics · 2009

Multiphase converters have been applied to an increasing number of industrial applications in recent years. On the other hand, multilevel converters have become a mature technology mainly in medium- and high-power applications. One of the problems of multilevel converters is the dc voltage unbalance of the dc bus. Depending on the loading conditions and the number of levels of the converter, oscillations appear in the dc voltages of the dc link. This paper presents a feedforward modulation technique for multilevel multiphase converters that reduces the distortion under balanced or unbalanced dc conditions. The proposed modulation method can be applied to any multilevel-converter topology with any number of levels and phases. Experimental results are shown in order to validate the proposed feedforward modulation technique.

Cited by 40Open access

Alternative Feedback Quantizer Using Space Vector Modulation

Matías Veillón, Eduardo Espinosa, Ricardo Lizana et al. · Repository@Nottingham (University of Nottingham) · 2023

Feedback Quantizer (FBQ) is a closed-loop modulation scheme with low harmonic content at low frequency and good tracking of the voltage reference at fundamental frequency. A good modulation scheme to be applied in transformer dependent systems that are not saturated by the low frequency harmonic components. This paper presents an alternative for the application of FBQ using Space Vector Modulation, with the objective of obtaining a higher accuracy in tracking the reference and improve the harmonic content of this technique at low sampling times. The simulated results show the fulfillment of the objectives satisfactorily.

Cited by 2Open access

Optimization in Space Vector Pulse-Width Modulation

Liang Li-ping · 2011

A novel Dispersion SVPWM Algorithm is proposed in the paper based on the conventional SVPWM analysis,especially in two parts which are sector distinguish and dwelling time.Novel algorithm is based on the angle of voltage vector which get through estimating algorithm,avoiding coordinate transformations,trigonometric function,inverse trigonometric function and vector decomposition,which simplified the conventional SVPWM algorithm.The proposed method is effective by the simulated and experimental results.

Cited by 0

Interleaved PWM with discontinuous space-vector modulation

Kun Xing, F.C. Lee, D. Borojevic et al. · IEEE Transactions on Power Electronics · 1999

This paper describes the effect of interleaved discontinuous space-vector modulation (SVM) in paralleled three-phase systems using three-phase pulsewidth modulation (PWM) rectifiers as an example. At the discontinuous point of the SVM, the phase shift between the switching signals of the paralleled modules generates a zero-sequence excitation to the system. Because the conventional control in a balanced three-phase system with only dq channels cannot reject this disturbance, a beat-frequency circulating current will develop on the zero axis. Based on this observation, a SVM without using zero vectors is used to eliminate the cause of pure zero-sequence current for parallel operation. Using this SVM, the circulating current is observable in dq channels. It can be suppressed dynamically by strong current loops of power-factor-correction (PFC) circuits. The concept is verified experimentally on a breadboard system.

Cited by 215