Caracterización del método SVPWM con inversor trifásico de dos niveles

Revista ECIPeru ◽

10.33017/reveciperu2019.0005/ ◽

2019 ◽

pp. 22-29

Keyword(s):

Pulse Width ◽

Output Voltage ◽

Pulse Width Modulation ◽

Harmonic Distortion ◽

Input Voltage ◽

Good Choice ◽

Voltage Source ◽

Voltage Source Inverter ◽

Matlab Simulink ◽

Wide Range

Caracterización del método SVPWM con inversor trifásico de dos niveles Juan Tisza1, 2, Javier Villegas2 1Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Rímac, Lima Perú 2Universidad Nacional Mayor de San Marcos, Ciudad Universitaria, Lima, Perú Recibido 17 de junio del 2019, Revisado el 17 de julio de 2019 Aceptado el 19 de julio de 2019 DOI: https://doi.org/10.33017/RevECIPeru2019.0005/ Resumen Las cargas en Corriente Alterna (CA) requieren voltaje variable y frecuencia variable. Estos requisitos se cumplen con un inversor de fuente de voltaje (VSI). Se puede lograr un voltaje de salida variable variando la tensión de CC de entrada y manteniendo constante la ganancia del inversor. Por otro lado, si la tensión de entrada CC es fija y no es controlable, se puede lograr una tensión de salida variable variando la ganancia del inversor, lo que normalmente se logra mediante el control de modulación por ancho de pulso dentro del inversor. Hay varias técnicas de modulación de ancho de pulso, pero la técnica de vector espacial es una buena opción entre todas las técnicas para controlar el inversor de fuente de voltaje. La modulación por ancho de pulso de vector espacial (SVPWM) es un método avanzado y muy popular con varias ventajas tales como la utilización efectiva del bus de CC, menos generación de armónicos en voltaje de salida, menos pérdidas de conmutación, amplio rango de modulación lineal, etc. En este documento, se ha tomado un inversor de fuente de voltaje constante CC y se ha implementado la SVPWM para VSI de dos niveles utilizando MATLAB / SIMULINK. Descriptores: Modulación de ancho de pulso (PWM), modulación de ancho de pulso de vector espacial (SVPWM), distorsión armónica total (THD), inversor de fuente de voltaje (VSI). Abstract Alternating Current (AC) loads require variable voltage and variable frequency. These requirements are met by a voltage supply inverter (VSI). A variable output voltage can be achieved by varying the input DC voltage and keeping the inverter gain constant. On the other hand, if the DC input voltage is fixed and not controllable, a variable output voltage can be achieved by varying the gain of the inverter, which is normally achieved by controlling the pulse width modulation within the inverter. There are several pulse width modulation techniques, but the spatial vector technique is a good choice among all the techniques for controlling the voltage source inverter. Spatial vector pulse width modulation (SVPWM) is an advanced and very popular method with several advantages such as effective utilization of CC bus, less harmonic generation in output voltage, less switching losses, wide range of linear modulation, etc. In this document, a CC constant voltage source inverter has been taken and SVPWM has been implemented for two-level VSI using MATLAB / SIMULINK. Keywords: Pulse Width Modulation (PWM), Space Vector Pulse Width Modulation (SVPWM), Total Harmonic Distortion (THD), Voltage Source Inverter (VSI).

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A Survey: Space Vector PWM (SVPWM) in 3φ Voltage Source Inverter (VSI)

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v8i1.pp11-18 ◽

2018 ◽

Vol 8 (1) ◽

pp. 11 ◽

Cited By ~ 1

Author(s):

Shalini Vashishtha ◽

K.R. Rekha

Keyword(s):

Output Voltage ◽

Pulse Width Modulation ◽

Harmonic Distortion ◽

Voltage Source ◽

Maximum Output ◽

Control Mechanisms ◽

Voltage Source Inverter ◽

Space Vector Pwm ◽

Space Vector ◽

Switching Losses

Since last decades, the pulse width modulation (PWM) techniques have been an intensive research subject. Also, different kinds of methodologies have been presented on inverter switching losses, inverter output current/ voltage total harmonic distortion (THD), inverter maximum output of DC bus voltage. The Sinusoidal PWM is generally used to control the inverter output voltage and it helps to maintains drive performance. The recent years have seen digital modulation mechanisms based on theory of space vector i.e. Space vector PWM (SVPWM). The SVPWM mechanism offers the enhanced amplitude modulation indexes (MI) than sinusoidal PWM along with the reduction in the harmonics of inverter output voltage and reduced communication losses. Currently, the digital control mechanisms have got more attention than the analog counterparts, as the performance and reliability of microprocessors has increased. Most of the SVPWM mechanisms are performed by using the analog or digital circuits like microcontrollers and DSPs. From the recent study, analysis gives that use of Field Programmable Gate Arrays (FPGA) can offer more efficient and faster solutions. This paper discusses the numerous existing research aspects of FPGA realization for voltage source inverter (VSI) along with the future line of research.

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Close Loop V/F control of Voltage Source Inverter using Sinusoidal PWM, Third Harmonic Injection PWM and Space vector PWM Method for Induction Motor

International Journal of Power Electronics and Drive Systems (IJPEDS) ◽

10.11591/ijpeds.v7.i1.pp217-224 ◽

2016 ◽

Vol 7 (1) ◽

pp. 217

Author(s):

Sandeep Ojha ◽

Ashok Kumar Pandey

Keyword(s):

Induction Motor ◽

Pulse Width ◽

Pulse Width Modulation ◽

Harmonic Distortion ◽

Total Harmonic Distortion ◽

Modulation Method ◽

Voltage Source ◽

Voltage Source Inverter ◽

Third Harmonic ◽

Simulink Model

<p>The aim of this paper to presents a comparative analysis of Voltage Source Inverter using Sinusoidal Pulse Width Modulation Method, Third Harmonic Injection Pulse Width Modulation Method and Space Vector Pulse Width Modulation Two level inverter for Induction Motor. In this paper we have designed the Simulink model of Inverter for different technique. An above technique is used to reduce the Total Harmonic Distortion (THD) on the AC side of the Inverter. The Simulink model is close loop. Results are analyzed using Fast Fourier Transformation (FFT) which is for analysis of the Total Harmonic Distortion. All simulation are performed in the MATLAB Simulink / Simulink environment of MATLAB.</p>

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A study on performances of carrier-based pulse-width modulation techniques for three-phase three-level t-type neutral-point-clamped inverter under switch-open-circuit fault on two neutral-point-connected legs

Science & Technology Development Journal - Engineering and Technology ◽

10.32508/stdjet.v3i3.659 ◽

2020 ◽

Vol 3 (3) ◽

pp. first

Author(s):

Nhờ Văn NGUYỄN ◽

HONG-PHONG NGUYEN LE

Keyword(s):

Pulse Width ◽

Output Voltage ◽

Pulse Width Modulation ◽

Short Circuit ◽

Harmonic Distortion ◽

Open Circuit ◽

Neutral Point ◽

Voltage Source ◽

Voltage Source Inverters ◽

Critical Issues

Multilevel voltage source inverters (VSIs) have been used for several decades thanks to their advantages compared with traditional two level VSI. Among various types of multilevel configuration, the T-type neutral-point-clamped VSI (3L TNPC VSI or 333-type VSI) has gained the attention in recent years. Due to the unique structure, the 333-type VSI has critical issues in reliability in operation such as switch-open-circuit (SOC) and switch-short-circuit (SSC), which lead to several unrequired issues, for instance, reduction of system performance, distorted and unbalanced output voltages and currents, or triggering the protection circuits. In some applications, the amplitude reduction and harmonics distortion of output voltages in SOC faults are not acceptable. Therefore, it is necessary to develop a pulse-width modulation (PWM) algorithm for 333-type VSI working under SOC fault which guarantees the desired output fundamental component voltage. The simultaneous SOC fault on two neutral-point-connected legs in the 333-type VSI may cause a large reduction in the output voltage. Under this circumstance, the 333-type VSI becomes an asymmetrical one called 322-type VSI. Certain studies regarding to the operation of 333-type VSI under SOC faults have been carried out. However, these studies require more semiconductor devices in order to create a redundant switching circuit. This leads to higher system cost with reduced inverter effieciency due to the additional loss. In this study, two carrier-based pulse-width modulation (CBPWM) techniques, i.e. 322-sinusoidal PWM (322-SPWM) and 322-medium offset CBPWM (322-MOCBPWM) are proposed for 322-type VSI. The proposed techniques are firstly simulated in MATLAB/Simulink and then implemented on a hardware setup. Performances of the proposed techniques are evaluated in terms of total harmonic distortion (THD) and weighted-THD (WTHD) of output voltages. Simulation results show that considering the worst output voltage under SOC fault, vBC, the proposed 322-SPWM technique could improve the THD by 40% and the WTHD by 94% compared with the uncompensated case with m=0.8. The corresponding results of 322-MOCBPWM technique are 42% and 96%, respectively. Characteristics of THD and WTHD values are also presented for demonstration the effectiveness of the proposed algorithm.

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Design of Boost Inverter for Solar Power Based Stand Alone Systems

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.f1026.0886s19 ◽

2019 ◽

Vol 8 (6S) ◽

pp. 125-129

Keyword(s):

Pulse Width ◽

Output Voltage ◽

Main Part ◽

Pulse Width Modulation ◽

Power Conversion ◽

Research Work ◽

Input Voltage ◽

Voltage Source ◽

Inverter Circuit ◽

Conversion Stage

This paper presents a new ideology called as boost inverter which converts input DC supply into AC directly without using any filter circuit. The main part of today’s research work is to use solar energy efficiently. While using for AC autonomous loads, the output from the solar panel should not suffer any losses during the various power conversion stages. The conventional voltage source inverter, which is currently in usage, produces an AC output voltage lower than the DC input supply and thus it requires another power conversion stage. It can be used to drive the loads only after removing the ripples using a filter. The main objective of the project is to produce an AC output voltage higher than the DC input voltage in a single stage. Thus the number of power conversion stages is reduced by using boost inverter circuit. Since Pulse Width Modulation technique is used to drive the circuit, the requirement of a filter at the output is not needed

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Pulse Width Modulation Switching Schemes for Two-Level Five-Phase Voltage Source Inverter

European Journal of Electrical Engineering ◽

10.18280/ejee.230207 ◽

2021 ◽

Vol 23 (2) ◽

pp. 137-142

Author(s):

Shailesh Kumar Gupta ◽

MohdArif Khan ◽

Omveer Singh

Keyword(s):

Pulse Width ◽

Pulse Width Modulation ◽

Harmonic Distortion ◽

Voltage Source ◽

Phase System ◽

Phase Voltage ◽

Voltage Source Inverter ◽

Large Space ◽

System A ◽

Sinusoidal Waveform

This paper proposes pulse width modulation schemes for a two-level five-phase voltage source inverter. According to the literature, the generation of a pure sinusoidal waveform requires an (n-1) number of vectors for 'n' number of phases, so in a five-phase system, a minimum of four-vectors is needed to generate a sinusoidal waveform. The author uses only two large vectors in this paper for a five-phase voltage source inverter. Vector diagram, switching table, and switching waveform have presented for two adjacent large space vectors. The performance for each PWM scheme is analyze based on fundamental components and total harmonic distortion. In last, results have verified in the Simulink environment.

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