Three-dimensional space vector modulation for four-leg voltage-source converters

Zhang, R.; Prasad, V.H.; Boroyevich, Dushan; Lee, F.C.

doi:10.1109/tpel.2002.1004239

Cited by 427 publications

(265 citation statements)

References 26 publications

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“…However, considering that the conventional three-phase inverter with an isolation transformer exhibits many disadvantages, such as bulkiness, large weight, and high cost, three-phase four-wire transformerless topologies are preferred [1]- [5]. Three-phase four-wire inverters can be divided into three-leg inverters with a split DC link and four-leg inverters [6]- [11]. The split DC-link capacitor topology requires only six power switches because the neutral current path is provided by the midpoint of the DC link.…”

Section: Introductionmentioning

confidence: 99%

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Design of a Hybrid Controller for the Three-phase Four-leg Voltage-source Inverter with Unbalanced Load

Doan¹,

Kim²,

Choi³

et al. 2017

Journal of Power Electronics

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The three-phase four-leg voltage-source inverter topology is an interesting option for the three-phase four-wire system. With an additional leg, this topology can achieve superior performance under unbalanced and nonlinear load conditions. However, because of the low bandwidth of conventional controllers in high-power inverter applications, the system cannot guarantee a balanced output voltage under the unbalanced load condition. Most of the methods proposed to solve this problem mainly use the multiple synchronous frame method, which requires several controllers and a large amount of computation because of frame transformation. This study proposes a simple hybrid controller that combines proportional-integral (PI) and resonant controllers in the synchronous frame synchronized with the positive-sequence component of the output voltage of the three-phase four-leg inverter. The design procedure for the controller and the theoretical analysis are presented. The performance of the proposed method is verified by the experimental results and compared with that of the conventional PI controller.

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Section: Introductionmentioning

confidence: 99%

“…1), the neutral wire is provided by the additional fourth leg. This topology exhibits important advantages, such as compactness, fast response, small DC-link capacitance, and a higher modulation index than its split DC link counterpart [11].…”

Section: Introductionmentioning

confidence: 99%

Design of a Hybrid Controller for the Three-phase Four-leg Voltage-source Inverter with Unbalanced Load

Doan¹,

Kim²,

Choi³

et al. 2017

Journal of Power Electronics

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show abstract

“…Estudios (Zhang, 2002;Shen y Lehn, 2002;Xiaoping et al 2008;Dai et al 2006) muestran la Revista Colombiana de Tecnologías de Avanzada modulación de ancho de pulso utilizando la técnica de vector espacial como espacios geométricos en tres dimensiones con un coste computacional elevado y un cambio total de los algoritmos existentes. Por tal razón se intenta simplificar los cálculos en inversores con ocho interruptores y realizar l as mínimas modificaciones en los algoritmos existentes.…”

Section: Introductionunclassified

Modulación De Vector Espacial Para Inversores Trifásicos Con Cuatro Ramas Deinterruptores

Ardila¹

2017

RCTA

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Este artículoanaliza una modulación de vector espacial en tres dimensiones de un inversor con cuatro ramas de interruptores y determina los valores máximos y mínimos de tensión homopolar que puede suministrar el inversor en régimen permanente. Se encuentra que en el cálculo de los modos activos existe una independencia con respecto a la tensión homopolar dada, por tal razón se puede calcular en forma convencional la modulación de ancho de pulso y sólo es necesario ajustar el cálculo de los modos inactivos y el tiempo de conmutación de la cuarta rama de interruptorespara inyectar tensión homopolar en el sistema. Además, se propone un nuevo método de cálculo de tiempos inactivos y de la cuarta rama de interruptores. Por último, se valida el procedimiento empleado en simulación y se valida la metodología propuesta empleando un prototipo en laboratorio.

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“…Pulse width modulation algorithms can be used by making abc → αβ coordinate transformation [16,[18][19][20] or directly in abc coordinates [22,23]. All 3-D SVPWM available strategies using abc→ αβ0 transformation use a 3 × 3 T αβ0 transformation matrix.…”

Section: Introductionmentioning

confidence: 99%

Optimal digital control of a three-phase four-leg voltage source inverter

Özdemir¹,

Erdem²

2016

Turk J Elec Eng & Comp Sci

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This paper presents a three-dimensional (3-D) space vector pulse width modulation (SVPWM) technique via a 4 × 4 orthonormal transformation matrix that has been used as a new approach in controlling a three-phase four-leg voltage source inverter (VSI). A fully optimal digital control scheme for the closed-loop regulation of the three-phase four-leg VSI has been used to synthesize a sinusoidal waveform with the help of the proposed method. Discrete-time modelling of each phase has been obtained independently in abc reference frame, and its optimal controller has been designed using a predefined performance index. A DSP-based controlled three-phase four-leg prototype VSI has been designed to verify the proposed discrete time modelling and the control scheme. The simulations and the real-time experiments show that satisfactory results have been obtained for the modelling of the three-phase four-leg VSI in abc reference frame and the 3-D SVPWM technique via 4 × 4 orthonormal transformation matrix at 20 kHz switching frequency.

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Three-dimensional space vector modulation for four-leg voltage-source converters

Cited by 427 publications

References 26 publications

Design of a Hybrid Controller for the Three-phase Four-leg Voltage-source Inverter with Unbalanced Load

Design of a Hybrid Controller for the Three-phase Four-leg Voltage-source Inverter with Unbalanced Load

Modulación De Vector Espacial Para Inversores Trifásicos Con Cuatro Ramas Deinterruptores

Optimal digital control of a three-phase four-leg voltage source inverter

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