Power Flow and Stability Analyses of a Multifunctional Distributed Generation System Integrating a Photovoltaic System With Unified Power Quality Conditioner

Campanhol, Leonardo Bruno Garcia; Silva, Sérgio Augusto Oliveira da; Oliveira, Azauri Albano de; Bacon, Vinícius Dário

doi:10.1109/tpel.2018.2873503

Cited by 99 publications

(46 citation statements)

References 29 publications

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“…x can be achieved by using the maximum power point tracking (MPPT) controller [15]. Otherwise, when PV array is disconnected, the reference port voltage is given as…”

Section: Control Of Qab Convertermentioning

confidence: 99%

“…Currently, many researchers have done a lot to study the topologies of UPQC with different aims [13]. In [14]- [15], the UPQC integrated with DG system (UPQC-DG) is presented to relieve the load active power demand on the grid, while the investment cost is relatively high. In [16], the interline UPQC (UPQC-I) is proposed to control the active power flow between two feeders and mitigate the PQ issues of the two feeders, but the current-and voltage-related PQ issues are not simultaneously mitigated in the same feeder.…”

Section: Introductionmentioning

confidence: 99%

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Three-Phase UPQC Topology Based on Quadruple-Active-Bridge

Han

Jiang

et al. 2021

IEEE Access

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“…x can be achieved by using the maximum power point tracking (MPPT) controller [15]. Otherwise, when PV array is disconnected, the reference port voltage is given as…”

Section: Control Of Qab Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Three-Phase UPQC Topology Based on Quadruple-Active-Bridge

Han

Jiang

et al. 2021

IEEE Access

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“…Non‐sinusoidal currents and voltages references have been used to control the most UPQC applications . Therefore, it is indicated to employ any method for extraction the reference quantities …”

Section: Proposed Upqc Topology Descriptionmentioning

confidence: 99%

“…To overcome the most problems related to PQ, single‐phase and three‐phase series‐parallel active power‐line conditioners, known as unified power quality conditioners (UPQC), have been employed in there‐phase three‐ and four‐wire systems (3P3W and 3P4W) by means of different configurations and control strategies.…”

Section: Introductionmentioning

confidence: 99%

Three‐phase four‐wire unified power quality conditioner structure with independent grid current control and reduced dc‐bus voltage operating with inverted/dual compensating strategy

Modesto

Silva

Oliveira

2020

Int Trans Electr Energ Syst

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Summary This work proposes a 3‐phase 4‐wire unified power quality conditioner (UPQC) structure, which has ability to operate with per‐phase independent grid current control, reduced dc‐bus voltage and inverted/dual compensation strategy. Since the grid currents are controlled by the series converter, two distinct strategies, namely, independent current compensation strategy (ICCS) and load unbalance compensation strategy (LUnCS) can be employed. Using the ICCS, the controls of the grid currents are performed independently per‐phase, such that the UPQC can operate even when grid voltage outage occurs in one or two phases of the power source. Furthermore, to guarantee the proper parallel converter operation, the dc‐bus voltage amplitude must be higher than the grid voltage peak amplitude. Thus, since the parallel converter operation is assured, the functioning of the series converter is also guaranteed because it needs lower dc‐bus amplitude to operate. However, depending on the converter topology adopted in the parallel converter, the series converter could be subjected to operate with dc‐bus voltage higher than necessary. Thus, to minimize this aspect, this paper proposes a UPQC scheme composed of 3‐Leg split‐capacitor (3‐Leg‐SC) and 4‐Leg topologies, operating as series and parallel converters, respectively. Thus, besides the use of the ICCS, lower dc‐bus voltage is allowed when compared to the UPQC composed of two 3‐Leg‐SC converters, as well as reduced power switches number is achieved when the propose scheme is compared to UPQC composed of two 4‐Leg converters. Extended experimental results based on digital signal controller are presented to evaluate the effectiveness and performance of the proposed UPQC.

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“…L. B. G. Campanhol etl. [14], [15] proposes a single-stage three-phase four-wire gridconnected Photo Voltaic (PV) system operating with a dual compensating strategy and feed forward control loop, the three level Neutral Point Converter (NPC) power circuit gives lower economic cost and better output performance, while this system may results in stability problem between loads and PV system.…”

Section: Introductionmentioning

confidence: 99%

An Inductive Hybrid UPQC for Power Quality Management in Premium-Power-Supply-Required Applications

Xu²,

et al. 2020

IEEE Access

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Voltage sag and harmonic pollution have a serious impact on the medium-voltage premiumpower-supply-required park represented by optical semiconductors, data storage, precision instruments and biopharmaceuticals. Which makes existing equipment require higher voltage capacity of power electronics, higher economic cost and compensation performance. In this paper, an Inductive Hybrid Unified Power Quality Conditioner (IH-UPQC), which is characterized as high integration, reduced DC-link voltage and satisfactory harmonic isolation of transformer, is presented to realize the bi-directional power quality improvement for medium-voltage premium-power-supply-required park. First, the three-phase equivalent circuit and mathematical model are established to reveal the mechanism of harmonic suppression and voltage regulation. Based on the theoretical analysis, the compound control strategy of series and shunt Hybrid Active Power Filter (HAPF) as well as the synchronous method sliding Goertzel discrete Fourier transformation-pre-filtering Phase Lock Loop (PLL) are designed. Then, the main circuit components design including Double Resonant Passive Filter (DRPF), L-C-R low pass filter and the special designed filtering winding for implementing inductive filtering method are described. Finally, the performance of IH-UPQC is validated in 10kV distribution network by MATLAB/Simulink. The simulation results demonstrate that the IH-UPQC is effective to perform grid voltage regulation, load harmonic current suppression and reactive power compensation.

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Power Flow and Stability Analyses of a Multifunctional Distributed Generation System Integrating a Photovoltaic System With Unified Power Quality Conditioner

Cited by 99 publications

References 29 publications

Three-Phase UPQC Topology Based on Quadruple-Active-Bridge

Three-Phase UPQC Topology Based on Quadruple-Active-Bridge

Three‐phase four‐wire unified power quality conditioner structure with independent grid current control and reduced dc‐bus voltage operating with inverted/dual compensating strategy

An Inductive Hybrid UPQC for Power Quality Management in Premium-Power-Supply-Required Applications

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