STATCOM applying flat-packaged IGBTs connected in series

Fujii, Kansuke; Suzuki, Akio; Konishi, S.; Takazane, J.; Ohki, Makoto; Daiguji, Masaharu

doi:10.1109/pesc.2004.1355227

Cited by 10 publications

(5 citation statements)

References 7 publications

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“…Fujii, et.al. presented a STATCOM applying flat-packaged IGBT concept connected in series in [12]. Here, a STATCOM, which compensates a 60 MVA of a negative-phase-sequence power of a high speed train, was used to achieve lower cost, smaller size, and higher efficiency.…”

Section: Analysis Of Harmonics and Ripple Current In Multi-module Conmentioning

confidence: 99%

“…Here, a STATCOM, which compensates a 60 MVA of a negative-phase-sequence power of a high speed train, was used to achieve lower cost, smaller size, and higher efficiency. In order to enlarge the capacity, the authors developed techniques of connecting IGBTs in series which yielded excellent results [12]. One main advantage of the multilevel voltage source converters is that it typically synthesizes the staircase voltage wave from several levels of DC capacitor voltages, which could be seen as more effective in [13].…”

Section: Analysis Of Harmonics and Ripple Current In Multi-module Conmentioning

confidence: 99%

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Analysis of Harmonics and Ripple Current in Multi-module Converters with Increasing Number of Modules for High Power Applications

Venkatasubramanian¹,

Natarajan²

2016

IJPEDS

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Controlled rectifiers are considered as the most important hardware part in the field of HVDC systems in transmission lines and can be used for a number of power electronics based system operation, control and utility applications. In this paper, a brief design of a 12-pulse, 24-pulse, 36-pulse and a 48-pulse converter connected to the grid is presented along with the harmonic and ripple current analysis with its comparison statistics and thus providing a justification for the suitable ones. The performance of the 12, 24, 36 and 48-pulse converters are compared for their effectiveness in both quantitatively as well as qualitatively. Further, comparison of the 48-pulse converter on its THD and current ripple which is connected towards the grid with simple pulse width modulation technique is also proposed. It combines all features of the low switching concepts and DC current reinjection techniques. Some basic topological explanation of the controlled rectifiers and simulation results using MATLAB are also presented in this paper in order to justify the harmonic analysis. The simulation results along with the quantitative results shows the effectiveness of the proposed scheme for the cancelation or the elimination of the harmonics result in maximum harmonic mitigation, for high power utility applications, the 48-pulse converter is most fitting to improve the conversion efficiency, low di/dt and dv/dt and active and reactive power controllability. Keyword: Controlled INTRODUCTIONMultipulse converters are suitable for high-power applications with the advantages of ideal harmonic performance and low switching frequency, but it also has an drawbacks of poor regulation and less controllability. With very low switching frequency a bidirectional pulse width modulation (PWM) converter based on multipulse structure has got the same harmonic performance [1]. The harmonic performance and linear regulation capability of such converters can also be analyzed theoretically. The general structure of the multilevel converter is to synthesize a sinusoidal voltage from several levels of voltages, typically obtained from capacitor voltage sources. The so-called 'multilevel' generally starts from three levels. A three-level converter, also known as a 'neutral-clamped' converter, consists of two capacitor voltages in series and uses the center tap as the neutral [13]. To get high dynamic performance the controller parameters are optimized with adequate gain phase margin. A 3-kVA prototype can be built so that the simulation and experiment results could be validated and the proposed converter could be used for high-power conversions [3]. The performance analysis of a 2-level, 24-pulse voltage source converters (VSCs) for high voltage DC (HVDC) system can be used for power quality improvement [4]. High Voltage Direct Current (HVDC)

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Section: Analysis Of Harmonics and Ripple Current In Multi-module Conmentioning

confidence: 99%

Section: Analysis Of Harmonics and Ripple Current In Multi-module Conmentioning

confidence: 99%

Analysis of Harmonics and Ripple Current in Multi-module Converters with Increasing Number of Modules for High Power Applications

Venkatasubramanian¹,

Natarajan²

2016

IJPEDS

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“…Also the failures of bonding wires are avoided. These advantages lead to high reliability and excellent performance in high power applications [10]- [12], especially for cases that IGBTs are connected in series [13], [14]. Manuscript …”

Section: Introductionmentioning

confidence: 99%

Pressure-Free Phenomenon in Top Layer of Chip Body Under Local Pressure and Design of Channel-Free Flat-Packaged IGBT

Teng

Yangjun

et al. 2014

IEEE Electron Device Lett.

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This letter investigates the magnitude and direction distributions of stress on an insulated gate bipolar transistor (IGBT) die when local pressure is applied to the chip surface. The results show that the pressure needs a certain thickness to spread uniformly all over the entire chip area. At the top of the chip, the stress concentrates right below the pressure contact region while the other region is pressure-free. Deeper into the die, the pressure becomes uniform vertical stress. This phenomenon is used to design the channel-free flat-packaged IGBT with little stress in the channel region by keeping the pressure contact region a safe distance away from the channel region. This improves the effective area of flat-packaged IGBT without destroying the reliability.

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“…A snubberless approach is required to simplify the IGBT series connected structure and lower the cost of the converter. An active clamping circuit [1] and an active gate technique [2] have been developed.…”

Section: Introductionmentioning

confidence: 99%

Development of a multiple series-connected IGBT converter for large-capacity STATCOM

Kon

Tobita

Suzuki

et al. 2010

The 2010 International Power Electronics Conference - ECCE ASIA -

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This paper reports the development of a converter for a large-capacity STATCOM. The converter consists of multiple series-connected 1.7kV module-type IGBTs. An active gate controlled circuit that we developed was applied to the IGBT gate drive circuit, eliminating large-capacity voltage-clamped snubber circuits or voltage balancing circuits that are conventionally needed for a series-connected IGBT converter, which considerably simplifies the converter. A rated-power test was performed, the results of which confirmed satisfactory performance of the developed converter.

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STATCOM applying flat-packaged IGBTs connected in series

Cited by 10 publications

References 7 publications

Analysis of Harmonics and Ripple Current in Multi-module Converters with Increasing Number of Modules for High Power Applications

Analysis of Harmonics and Ripple Current in Multi-module Converters with Increasing Number of Modules for High Power Applications

Pressure-Free Phenomenon in Top Layer of Chip Body Under Local Pressure and Design of Channel-Free Flat-Packaged IGBT

Development of a multiple series-connected IGBT converter for large-capacity STATCOM

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