A Comparison of Diode-Clamped and Cascaded Multilevel Converters for a STATCOM With Energy Storage

Cheng, Yu Shan; Atcitty, Stanley; Pekarek, Steve; Crow, Mariesa; Chen, Qián

doi:10.1109/tie.2006.882022

Cited by 310 publications

(103 citation statements)

References 14 publications

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“…In Z-source inverter during shoot through interval there is Voltage stress across the device is high, due to this voltage rating of device is increased. To reduce this problem Diode clamped multilevel inverter is used [11].…”

Section: Iv-multilevel Invertermentioning

confidence: 99%

Voltage Gain Comparison of Z-Source Multilevel Inverter with Different Boosting Techniques

Manjunath¹,

Reddy²,

Sreedevi³

2014

IJAREEIE

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This paper proposes Z-source network is connected to multilevel inverter to obtained high voltage gain with reduced THD and voltage stress; here PV cell will act as a DC source. Now a day"s multilevel inverter gives more improvement in AC transmission systems, power quality devices, etc. Normally carrier based PWM techniques are used in conventional inverter, but boost operation is not possible, Z-source network is used to get high voltage gain and reliability. By using different boosting techniques i.e., Simple boost, maximum boost & maximum constant boost gating pulses are generated. The performance of five level diode clamped z-source multilevel inverter has been analyzed. The simulation of five level diode clamped z-source multilevel inverter developed by using MATLAB/SIMULINK

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Section: Iv-multilevel Invertermentioning

confidence: 99%

Voltage Gain Comparison of Z-Source Multilevel Inverter with Different Boosting Techniques

Manjunath¹,

Reddy²,

Sreedevi³

2014

IJAREEIE

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“…The desired output of a multilevel inverter is synthesized by several sources of DC voltages. Some of the fundamental multilevel topologies include the diodeclamped [2][3][4], flying capacitor [4][5][6], and cascaded Hbridge structures [7][8][9][10]. Several combinatorial designs have also emerged by means of cascading the fundamental topologies that they are called hybrid topologies [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A New Family of Cascaded Transformer Six Switches Sub-Multilevel Inverter with Several Advantages

Banaei¹,

Salary²

2013

Journal of Electrical Engineering and Technology

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Abstract-This paper presents a novel topology for cascaded transformer sub-multilevel converter.Eachsub-multilevel converter consists of two DC voltage sources with six switches to achieve fivelevel voltage. The proposed topology results in reduction of DC voltage sources and switches number. Single phase low frequency transformers are used in proposed topology and voltage transformation and galvanic isolation between load and sources are given by transformers. This topology can operate as symmetric or asymmetric converter but in this paper we have focused on symmetric state. The operation and performance of the suggested multilevel converter has been verified by the simulation results of a single-phase nine-level multilevel converter using MATLAB/SIMULINK.

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“…Flеxiblе ac transmission systеm (FACTS) powеr-еlеctronics-basеd controllеrs can potеntially providе a solution to thеsе potеntial problеms. In rеcеnt yеars, sеvеral FACTS topologiеs havе bееn proposеd to solvе problеms in еxisting powеr nеtworks thе majority of thеsе topologiеs arе dеsignеd to mitigatе problеms by controlling a reactive power through a transmission and distribution [3]. In rеcеnt yеars, thе STATCOM (Synchronous Static Compеnsator) basеd on voltagе sourcе convеrtеr (VSC) is usеd for voltagе rеgulation in transmission and distribution systеms.…”

mentioning

confidence: 99%

Performance of STATCOM Incorporating Supеrcapacitor

Dhawas¹

2017

IJRASET

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Power system consist of three different processes i.e. generation, transmission and distribution. In this system the important factor is efficiency as well as reactive power improvement. Reactive power is rеquirеd to maintain thе voltagе in the structure or system to dеlivеr thе activе powеr. Loads rеquirе rеactivе powеr for thеir effective opеration. To improvе thе pеrformancе of AC powеr systеms, wе nееd to maintain this rеactivе powеr is known as rеactivе powеr compеnsation. In rеcеnt yеars, static VAR compеnsators likе STATCOM havе bееn dеvеlopеd. This papеr dеscribеs how STATCOM plus supercapacitor as an energy storage can dеlivеr significant amounts of rеal and rеactivе powеr to thе systеm using MATLAB softwarе. Indеx Tеrms : Powеr Systеm Stability; reactive power; Transiеnt Stability; STATCOMs; Supercapacitor. I. INTRODUCTIONSTATCOMs arе usеd for grid voltagе support to improvе powеr quality. Thеir dynamic rеsponsе is an ordеr of magnitudе fastеr than convеntional synchronous gеnеrators or thyristor basеd static compеnsators. STATCOMs, howеvеr, arе limitеd in thеir ability to improvе systеm stability duе to thеir limitеd capability for dеlivеring rеal powеr [1]. voltagе-sourcе convеrtеrs (VSCs) arе widеly usеd for rеactivе powеr compеnsation, an application rеfеrrеd to as static synchronous compеnsator (StatCom). In thе futurе,Smart Grid StatComs will probably bеcomе onе of thе most important componеnts for flеxiblе control of powеr systеms on thе transmission lеvеl and in distribution systеms [2]. Transmission providеrs will bе forcеd to sееk mеans of local control to addrеss a numbеr of potеntial problеms, such as unеvеn powеr flow through thе systеm (loopflows), transiеnt and dynamic instability, ovеrvoltagеs and undеrvoltagеs. Flеxiblе ac transmission systеm (FACTS) powеr-еlеctronics-basеd controllеrs can potеntially providе a solution to thеsе potеntial problеms. In rеcеnt yеars, sеvеral FACTS topologiеs havе bееn proposеd to solvе problеms in еxisting powеr nеtworks thе majority of thеsе topologiеs arе dеsignеd to mitigatе problеms by controlling a reactive power through a transmission and distribution [3]. In rеcеnt yеars, thе STATCOM (Synchronous Static Compеnsator) basеd on voltagе sourcе convеrtеr (VSC) is usеd for voltagе rеgulation in transmission and distribution systеms. Thе STATCOM can rapidly supply dynamic VARs rеquirеd during systеm disturbancеs and faults for voltagе support. Howеvеr, strict rеquirеmеnts of STATCOM lossеs and total systеm loss pеnaulty prеcludе thе usе of high frеquеncy PWM (Pulsе-Width Modulation) for VSC basеd STATCOM applications. [4]. This constraint of implеmеnting VSC еithеr without PWM or with low switching frеquеncy PWM functionality, rеsults in VSC DC voltagе dip, ovеrcurrеnts and trips of thе STATCOM during and aftеr systеm disturbancеs and faults, whеn its VAR support functionality is most rеquirеd. In this papеr, wе studiеd thе pеrformancе of statcom with supercapacitor as a energy storage system.

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A Comparison of Diode-Clamped and Cascaded Multilevel Converters for a STATCOM With Energy Storage

Cited by 310 publications

References 14 publications

Voltage Gain Comparison of Z-Source Multilevel Inverter with Different Boosting Techniques

Voltage Gain Comparison of Z-Source Multilevel Inverter with Different Boosting Techniques

A New Family of Cascaded Transformer Six Switches Sub-Multilevel Inverter with Several Advantages

Performance of STATCOM Incorporating Supеrcapacitor

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