State Feedback Control of Multilevel Inverters for DSTATCOM Applications

Shukla, Anshuman; Ghosh, Arindam; Joshi, Avinash

doi:10.1109/tpwrd.2007.905271

Cited by 45 publications

(19 citation statements)

References 23 publications

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“…The compensator injects three‐phase currents in the ac system to eliminate the disturbances caused by the load. Thence, the reference currents generation from the measurements of local variables has affected wide attention . These techniques carry an ingrained assumption which means that the voltage at the PCC is tightly adjusted and not affected based on currents inoculated by the shunt system.…”

Section: Enhancement Of Pq Based On Facts Devicesmentioning

confidence: 99%

Enhancement of power quality for load compensation using three different FACTS devices based on optimized technique

Mohamed

2019

Int Trans Electr Energ Syst

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Summary This paper presents a study of the interaction between loads, utility grids, and different devices of power quality enhancement. The essential motive of this study is mainly focused on the use of power electronic devices that are applicable to distribution systems, very responsive to disturbances in order to provide power quality improvement and solutions, and also to develop a model of these three FACTS devices (DVR, DSTATCOM, and UPQC) for enhancement of power quality in electrical grids. The DVR is a power quality that is applied as an efficient solution for the safeguard of sensitive loads with voltage troubles in distribution systems like voltage dips and rises related to faults. DVR efficiency depends upon the control method performance involved in switching the inverters. However, the transient response of the DSTATCOM compensating is very significant for nonlinearly varying and unbalanced loads. The UPQC is applied as an active power conditioning unit to alleviate both voltage and current harmonics at a distribution of the power system grid. The response of UPQC at most depends on how readily and carefully compensation signs are obtained by using control units. The various kinds of controllers are suggested for three devices applied here like PI and fuzzy logic controllers. The above modeling has been carried out on a distribution system for the power quality enhancement. A new design for the enhancement of PQ‐based FACTS for the test results given from different control methods such as PI and FLC is given in this paper.

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Section: Enhancement Of Pq Based On Facts Devicesmentioning

confidence: 99%

Enhancement of power quality for load compensation using three different FACTS devices based on optimized technique

Mohamed

2019

Int Trans Electr Energ Syst

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“…Therefore, the DC capacitors voltage balancing is required under all conditions, which determines both the safety and efficiency of DCMCs. Two possible solutions of the voltage imbalance exist: (i) installing of voltage balancing circuits on the converter DC side [20,21,32] and (ii) modifying the converter switching pattern according to a control strategy [31,33]. The latter is preferable in terms of cost, as the former requires additional power hardware, which adds to cost and complexity.…”

Section: Disadvantagesmentioning

confidence: 99%

Multilevel Converter Topologies for STATCOMs

Shukla

Nami

2014

Static Compensators (STATCOMs) in Power Systems

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To implement the STATCOMs for transmission and distribution applications, high power converters are needed. A multilevel converter is a logical choice for such applications as it can meet the imposed line side current and voltage harmonic distortion standards without extending its device ratings. Several types of monolithic multilevel converters have been proposed based on different structures of a DC link voltage (or current) to generate staircase output voltage (or current) levels. The multilevel current source converters (CSC) are also a potential configuration for STATCOM. Multilevel CSCs using fully controllable switches have the advantages of low output harmonics and controllable active and reactive power. During the last decade, modular multilevel converters have shown a breakthrough and have made their way to commercial high power applications. Modularity, in general, refers to a technique to develop comparably large systems by combining smaller subsystems. For power converter topologies, this means, a cascaded connection of converter cells seems to be an interesting solution to reach high voltage and high quality waveforms with a minimum complexity. This chapter provides an overview on monolithic and modular multilevel converter topologies, targeting high-power applications and in particular STATCOM. Modular multilevel converters can be built either straightforward by applying the modular building block cells or by a combination of cells with monolithic multilevel topologies. The monolithic and modular CSCs can also be realized by employing the duality concept on each corresponding Voltage Source Converter (VSC). This chapter summarizes the most recent developments made for multilevel converter A. Shukla (&)

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“…If load demand increases, power transfer to the load is increased with corresponding change in the phase angle δ. The available wind power is also being monitored from (2). The difference between the two is the reference power P ref to be fed from the source.…”

Section: Control Strategy Of Dstatcommentioning

confidence: 99%

Sliding mode control of converter in distributed generation using DSTATCOM

Bajpai

Gupta

2010

2010 International Conference on Power, Control and Embedded Systems

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In this paper, a control strategy based on the sliding mode control is used to achieve robust control of a distribution static compensator (DSTATCOM) which is controlled as voltage source converter for the grid interface of wind turbine-generator system. The DSTATCOM is used to control the voltage of the bus to which it is connected to a balance sinusoid in respect of the harmonic distortions in supply or load side of the three-phase system. A variable speed wind turbine generator is used to produce a variable DC voltage which is placed as input voltage source to the converter of the DSTATCOM. Easily implemented sliding surface provide prominent dynamic performance against changes in the load and in the input dc voltage due to wind variations. A control strategy for grid voltage control has been implemented in respect of the wind variations. The results are verified using PSCAD/EMTDC simulation studies.

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State Feedback Control of Multilevel Inverters for DSTATCOM Applications

Abstract: Abstract-In this paper, load compensation using multilevel inverter-based distribution static compensator (DSTATCOM) is presented. The DSTATCOM is connected to a three-phase four-wire (3p4w) distribution system. Two different multilevel inverter topologies are used to realize the DSTATCOM.

Cited by 45 publications

References 23 publications

Enhancement of power quality for load compensation using three different FACTS devices based on optimized technique

Enhancement of power quality for load compensation using three different FACTS devices based on optimized technique

Multilevel Converter Topologies for STATCOMs

Sliding mode control of converter in distributed generation using DSTATCOM

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