Three-phase multi-pulse converter StatCom analysis

Dávalos, M Ricardo; Ramı́rez, Juan M.; Tapia, Oscar

doi:10.1016/j.ijepes.2004.08.007

Cited by 14 publications

(2 citation statements)

References 6 publications

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“…In response to the growing demand for high power inverter units, multipulse inverters (MPI) have drawn increased interest in the field of research and industry [2][3][4]. A multipulse inverter generates a staircase wave closely resembling a sine wave by connecting number of identical three-phase inverter bridges through phase shifting transformers (PST).…”

Section: Evolution Of High Power Invertersmentioning

confidence: 99%

“…In order to realise higher voltages, each main switch of the 2-level inverter is formed by connecting many semiconductor devices in a series/parallel fashion. It is essential that with this arrangement, the electrical and thermal characteristics of the series and/or parallel connected semiconductor devices should be matched [1].In response to the growing demand for high power inverter units, multipulse inverters (MPI) have drawn increased interest in the field of research and industry [2][3][4]. A multipulse inverter generates a staircase wave closely resembling a sine wave by connecting number of identical three-phase inverter bridges through phase shifting transformers (PST).…”

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A Combined Multipulse-Multilevel Inverter Suitable For High Power Applications

Geethalakshmi¹,

Dananjayan²

2010

IJCEE

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Abstract-Power electronic devices are finding increased applications in the transformation of electrical energy into useful forms, especially at higher power levels. The recent trend in power electronic converters is to switch the power semiconductor devices in power modulators at increased frequencies with a view to minimize harmonics, enhance power quality and regulate the output voltage. This paper is aimed to present the design of high power inverter topology capable of producing a near sinusoidal ac voltage with minimal harmonic distortion which enables its use in high power applications. The analytical expressions for the proposed inverter output voltages using Fourier analysis have been obtained. Vector diagrams are drawn to clearly illustrate the mechanism of harmonic cancellation in the proposed multipulse-multilevel inverter topology. The complete digital simulation of the proposed VSI is performed using MATLAB/Simulink and the simulation results closely agreed with the analytical results.Index Terms-Multi-pulse inverter, Multi-level inverter, Phase shifting transformer, Total Harmonic Distortion, Voltage source inverter. I. INTRODUCTIONThe progress of a nation is assessed by its economic growth, industrial development besides technological advancements. The per capita consumption of electrical energy is treated as a measure to evaluate the overall progress. It is imperative that the existing resources are fully utilized before venturing to look for alternatives, in the present energy crisis scenario. However, it is equally important to realize the rapid depletion of energy sources and contemplate measures to augment its sustainability.The field of power electronics has witnessed tremendous development in recent times. The advent of new power controlled devices has contributed significantly to an enhanced performance of the existing power converters. The birth of innovative converter topologies has paved the way for further improving the overall power quality. It has contributed to build sophisticated utilities and enable precise control of flow of power over the transmission lines. Inverters are generally used in a host of applications that include variable speed drive, uninterruptible power supplies, flexible AC transmission systems (FACTS), high voltage dc transmission (HVDC) systems, active filters, etc., The output voltage waveforms of ideal inverters should be sinusoidal. But, the waveforms of practical inverters are non-sinusoidal and contain certain harmonics. Square wave or quasi-square wave voltages may be acceptable for low-and medium-power applications. However, low distorted sinusoidal waveforms are required for high power applications especially when they are used in power system applications.Appropriate voltage source inverter circuits have to be developed in order to integrate power converter circuits into power systems. The harmonics generated on the ac side of the power inverter circuits greatly influence the power quality of the transmission system. Hence, in the present work, an att...

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Section: Evolution Of High Power Invertersmentioning

confidence: 99%

mentioning

confidence: 99%