Performance evaluation of three-phase variable-speed DC drive systems with uniform PWM control

Hamed, S.A.

doi:10.1109/63.558732

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…It is important to note that the dwell time of these two switching states must be equal, so that the inductor is fully discharged after two consecutive switchings. Indeed, the control signals of S 3 – S 7 and S 4 – S 8 are similar to the uniform pulse‐width modulation (UPWM), which the dwell times of ON‐ and OFF‐states are the same [27]. On the basis of above description, one can conclude that the switches S 3 , S 4 , S 7 and S 8 are controlled at high frequency only at output voltage levels 2, 4, 6 and 8.…”

Section: Proposed Nine‐level Vsis With Coupled Inductorsmentioning

confidence: 99%

Design and comparison of nine‐level single‐phase inverters with a pair of coupled inductors and two dc sources

Hashemizadeh-Ashan¹,

Monfared²

2016

IET Power Electronics

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Four different nine-level single-phase inverters with coupled inductors are proposed in this study, for the first time. All proposed topologies are based on the well-known multilevel converters with two separate dc voltage sources in their structure, with some modifications to include a cell with the coupled inductors and a pair of half-bridge legs. Fewer number of semiconductor devices and dc sources and no need for split capacitors make the proposed inverters very attractive to both researchers and industry. The proposed inverters are compared with other conventional ninelevel topologies from different points of view. Experimental results for these inverters on a low-voltage test bench are provided to demonstrate the validity of the analytical analysis.

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Section: Proposed Nine‐level Vsis With Coupled Inductorsmentioning

confidence: 99%

Design and comparison of nine‐level single‐phase inverters with a pair of coupled inductors and two dc sources

Hashemizadeh-Ashan¹,

Monfared²

2016

IET Power Electronics

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“…Technical literature concerning three-phase motor drive systems is very wide and rich in contributions investigating several aspects related to that kind of systems. A first set of contributions is related to functional issues such as, for example, the control strategies for three-phase inverters (e.g., [1]). A second set of contributions is related to circuit modeling and measurement techniques of conducted electromagnetic interference (EMI) [2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Circuit Modeling and Statistical Analysis of Differential-to-Common-Mode Noise Conversion Due to Filter Unbalancing in Three-Phase Motor Drive Systems

Bellan

2020

Electronics

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This work deals with circuit modeling of noise mode conversion due to system asymmetry in a three-phase motor drive system. In fact, it is well-known that in case of system asymmetry (e.g., slightly asymmetrical LC filter parameters), differential-mode noise can convert into common-mode noise, resulting in increased level of conducted electromagnetic interference. This phenomenon has been observed with measurements and reported in previous works, but a clear and rigorous analytical description is still a challenging point. The main novelty proposed in the paper is a rigorous analytical description of differential-to-common-mode noise conversion based on the Clarke transformation and the eigenvalue analysis. In particular, the magnitude and the frequency location of the differential-mode resonances injected into the common-mode circuit are derived in closed form. Moreover, since system asymmetry is usually uncontrolled (e.g., component tolerance and parasitic elements), a statistical analysis is also presented by treating the parameters of the LC filter as random variables. Thus, a second contribution proposed in the paper is the analytical derivation in closed form of the probability density function, the mean value, and the standard deviation of the random frequency location of the resonance peaks injected into the common-mode circuit. The importance of the analytical results derived in the paper is two-fold. First, a deep theoretical understanding of the phenomenon in terms of circuit theory concepts is achieved. Second, the impact of differential-to-common-mode noise conversion is described in quantitative terms. Thus, the obtained analytical results can be used to predict or explain the noise conversion impact on the frequency-domain measurements of common-mode currents. Theoretical derivations are validated through a time-domain Simulink implementation of a three-phase motor drive system, and a frequency-domain analysis through the discrete Fourier transform.

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“…Sin embargo, para poder cambiar la frecuencia, el variador requiere ejecutar múltiples tareas. Los enfoques comunes de los artículos referente a variadores de velocidad son: 1) diseño y control de variadores de velocidad [1][2][3][4], 2) Dimensionamiento de elementos reactivos [5], 3) estrategias de modulación que permiten cambiar la magnitud y la frecuencia de la tensión de salida: control escalar [6][7] y control vectorial [8][9]. No se encontró en la revisión bibliográfica el enfoque, para variadores de velocidad, que realice la programación multitarea, es por esto que este artículo presenta el desarrollo de los algoritmos que permiten la programación multitarea para variadores de velocidad trifásicos.…”

Section: Introductionunclassified

Desarrollo de un variador de velocidad trifásico: enfoque de programación multitarea

Benavides-Córdoba

Muñóz-Galeano

Cano

2018

Ingeniare. Rev. chil. ing.

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RESUMENEste artículo presenta la programación multitarea para el desarrollo de un variador de velocidad trifásico. Este enfoque no se ha reportado en la literatura técnica, aunque es de relevancia para estudiantes de ingeniería, investigadores e ingenieros desarrolladores de equipos de electrónica de potencia. Se propone la programación multitarea para la implementación de las tareas que debe realizar el variador de velocidad. Las tareas necesarias en un variador de velocidad son descritas y programadas en el microcontrolador (dsPIC30F4012) utilizando máquinas de estados, considerando tiempos y prioridades mediante multitarea preferente y cooperativa. Este artículo propone una forma de programación para variadores de velocidad que permite el desarrollo del software desde etapas incipientes. La estructura de programación propuesta permite el uso de microcontroladores de menores prestaciones y, por ende, la reducción de los costos de producción. Se presenta un variador de velocidad trifásico que puede cambiar la amplitud y la frecuencia del voltaje de salida sin paros o interrupciones. La validación de la programación multitarea se realiza en un prototipo experimental desarrollado en el laboratorio evaluando la ejecución y los tiempos de las tareas.Palabras clave: Multitarea, programación, variador de velocidad trifásico, bajo costo, máquinas de estados, microcontrolador. ABSTRACT This paper presents multitasking programing of a three-phase speed variator development. This focus has not been reported in technical literature, although it is relevant for engineering power electronics developers, students, and researchers. Hybrid multitasking programing is proposed for the implementation of task

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Performance evaluation of three-phase variable-speed DC drive systems with uniform PWM control

Cited by 13 publications

References 7 publications

Design and comparison of nine‐level single‐phase inverters with a pair of coupled inductors and two dc sources

Design and comparison of nine‐level single‐phase inverters with a pair of coupled inductors and two dc sources

Circuit Modeling and Statistical Analysis of Differential-to-Common-Mode Noise Conversion Due to Filter Unbalancing in Three-Phase Motor Drive Systems

Desarrollo de un variador de velocidad trifásico: enfoque de programación multitarea

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