Modular multilevel STATCOM with energy storage

Bharadwaj, Anil; Maiti, Suman

doi:10.1109/iciinfs.2016.8263034

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…The submodule capacitor voltages may be deviated from their nominal values due to various non‐idealities, eg, different ESR and unequal semiconductor losses. In this work, a sorting algorithm is used to balance the submodule capacitor voltages . The required number of submodules ( N sm ) to be inserted from an arm is obtained from Phase‐Shifted Carrier based PWM (PSC‐PWM) technique.…”

Section: Proposed Configuration To Integrate Ucs With MMCmentioning

confidence: 99%

“…In this work, a sorting algorithm is used to balance the submodule capacitor voltages. 14 The required number of submodules (N sm ) to be inserted from an arm is obtained from Phase-Shifted Carrier based PWM (PSC-PWM) technique. The corresponding gating signals of the SMs are generated through sorting algorithm using the information of arm current and N sm .…”

Section: Figure 1 Structure Of the Bi-directional Dc-dc Convertermentioning

confidence: 99%

“…where C mod is the capacitance of UC module, P oi is the power associate to the ith DC-DC converter, and t is the time duration of active power support. Using ( 12) and ( 13), the SoC of an UC module can be estimated through (14).…”

Section: Soc Balancing Algorithm For the Distributed Uc-essmentioning

confidence: 99%

“…A topology of E‐STATCOM using MMC is discussed in Bharadwaj and Maiti for grid integration of a large PV plant. Battery‐based ESS is lumped at the DC link of MMC to provide the active power support.…”

Section: Introductionmentioning

confidence: 99%

“…12 Among the various multilevel converters, the modular multilevel converter (MMC) has gained popularity due to modular structure, scalability and higher efficiency. 13 A topology of E-STATCOM using MMC is discussed in Bharadwaj and Maiti 14 for grid integration of a large PV plant. Battery-based ESS is lumped at the DC link of MMC to provide the active power support.…”

Section: Introductionmentioning

confidence: 99%

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Control and state of charge balancing algorithm for modular multilevel STATCOM with distributed ultracapacitor‐based energy storage system at the DC link

Bharadwaj

Maiti

2020

Int Trans Electr Energ Syst

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Summary In this paper, a new configuration of ultracapacitor (UC)‐based energy storage system is proposed aiming applications at higher power level. The configuration can provide active and reactive power support together. The UC is chosen due to its longer life cycle and fast transient response. The UCs are integrated at the DC link of a modular multilevel converter (MMC) through distributed DC‐DC converters. This configuration possesses better features in terms of power quality, modularity, redundancy, and efficiency compared with conventional two‐/three‐level topologies. The integration of ultracapacitors with the MMC and associated control related issues is discussed in this paper. An algorithm to balance the state of charge among the distributed energy storage modules is also proposed. The performance of the proposed system and the associated control methods are verified for a wind energy generation system using PSCAD/EMTDC simulation and the results show satisfactory performance.

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Section: Proposed Configuration To Integrate Ucs With MMCmentioning

confidence: 99%

Section: Figure 1 Structure Of the Bi-directional Dc-dc Convertermentioning

confidence: 99%

Section: Soc Balancing Algorithm For the Distributed Uc-essmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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