Nineteen-level Active Filter System using Asymmetrical Cascaded Converter with DC Voltages Control

Silva, L.A.; Pimentel, Sérgio Pires; Pomílio, José Antenor

doi:10.1109/pesc.2005.1581639

Cited by 23 publications

(12 citation statements)

References 19 publications

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“…Figure 3 illustrates the switching method adopted in this work. DC-link voltages of vdc, 2vdc and 6vdc are selected to produce equal voltage steps in the generated nineteen-level output voltage [33]. …”

Section: Modulation Strategymentioning

confidence: 99%

An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation

2015

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Problems related to power quality, which in the last years were responsible only for small losses in low-voltage distribution systems, are now causing damage to power apparatuses and financial losses also in medium-voltage systems. The necessity of a better quality of power supply encourages the development of new specific custom power devices directly connected in medium-voltage distribution systems. It is well know that the multilevel converters are capable of being installed directly in the medium voltage, and presents several advantages when compared with conventional two-level converters. Some topologies, like the asymmetric cascaded multilevel converter, presents difficulties in regulating the voltages of all isolated dc-link capacitors. In this context, this article presents an asymmetric nineteen-level D-STATCOM (Distribution Static Synchronous Compensator) with a reactive power and dc-link regulation control loops for generic cascaded multilevel converters in order to improve the power quality in medium-voltage distribution systems. The performance of the proposed control method for a multilevel D-STATCOM is presented and evaluated in a downscaled prototype. OPEN ACCESSElectronics 2015, 4 312

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Section: Modulation Strategymentioning

confidence: 99%

An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation

2015

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“…The utility-interactive inverter of the DGS consists of a multilevel structure with 19 levels produced by an asymmetrical cascaded topology (Daher et al, 2005;Pimentel, 2006;Rodriguez et al, 2002;Silva et al, 2005b). Figure 3 shows the structure of the used inverter.…”

Section: Multilevel Invertermentioning

confidence: 99%

“…If an amount of extra active power is available for delivering to the Area EPS, the signal i c * is equal to the sum of the load current i L with the reference signal waveform of the source current i s * . The reference signal i s * is obtained from the multiplication of the PCC voltage v PCC with the output average power PI controller k. This multiplication represents a technique called "Resistive Load Synthesis" (RLS) (Nunez-Zuniga et al, 2000;Silva et al, 2005b). The delivering of only active power to the Area EPS is possible because current and voltage have the same waveform in the RLS technique, just like in a resistor.…”

Section: Average Power Controlmentioning

confidence: 99%

Single-Phase Distributed Generation System Based on Asymmetrical Cascaded Multilevel Inverter

Pimentel¹,

Martinez²,

Pomílio³

2010

Distributed Generation

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“…Fig. 4 shows the same converter operating as an Active Power Filter (APF) [24], incorporating the reactive power compensation. The compensator starts at 50 ms.…”

Section: DC Voltage Unbalancementioning

confidence: 99%

Reactive power and harmonics compensation with Multilevel Cascade Converter

Luna

Pomílio

2009

2009 35th Annual Conference of IEEE Industrial Electronics

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1 -This article presents the application of the Multilevel Cascade Inverter for reactive power and harmonics compensation. In this case, since the converter does not deliver active power to the load, it is possible to operate without DC sources that are substituted by capacitors. The challenge is to balance the voltages that tend to displace due to the asymmetric current waveform (harmonics compensation) and load transients. The paper provides some explanations concerning the phenomena that produce voltage unbalance and proposes an algorithm for balancing the voltage by swapping the H-bridge cells for producing the desired output voltage.

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Nineteen-level Active Filter System using Asymmetrical Cascaded Converter with DC Voltages Control

Cited by 23 publications

References 19 publications

An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation

An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation

Single-Phase Distributed Generation System Based on Asymmetrical Cascaded Multilevel Inverter

Reactive power and harmonics compensation with Multilevel Cascade Converter

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