An Output Regulation-Based Unified Power Quality Conditioner With Kalman Filters

Kwan, Kian Hoong; So, P.L.; Chu, Yun Chung

doi:10.1109/tie.2012.2193852

Cited by 79 publications

(45 citation statements)

References 23 publications

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“…To date, various DC-link capacitor voltage regulation algorithms have been reported in the literature and their performances have been explored. They can generally be classified as direct voltage error manipulation [38][39][40] and self-charging [20,41,42]-based approaches. Nevertheless, other modified versions of the aforementioned approaches are also available [2,41].…”

Section: Dc-link Capacitor Voltage Regulation Algorithmmentioning

confidence: 99%

“…Another alternative in regulating the overall DC-link voltage is by using the self-charging technique [20,41,42]. In contrast to the existing direct voltage error manipulation approach which operates based on estimation of a control signal, the DC-link capacitor voltage regulation algorithm based on self-charging technique applies the law of energy conservation to control the charging and discharging of the DC-link capacitor.…”

Section: Self-charging Techniquementioning

confidence: 99%

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Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

et al. 2017

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Current harmonics is one of the most significant power quality issues which has attracted tremendous research interest. Shunt active power filter (SAPF) is the best solution to minimize harmonic contamination, but its effectiveness is strictly dependent on how quickly and accurately its control algorithms can perform. This manuscript reviews various types of existing control algorithms which have been employed for controlling operation of SAPF. Harmonic extraction, DC-link capacitor voltage regulation, current control and synchronizer algorithms are examined and discussed. The most relevant techniques which have been applied for each control algorithm are described and contrasted in an organized manner to identify their respective strengths and weaknesses. It is found that the applied control algorithms differ in two conditions: (1) the condition where harmonic current distortion is treated by the SAPF in the presence of non-ideal source voltage; and (2) the condition where multilevel inverter is employed as the circuit topology of SAPF.

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Section: Dc-link Capacitor Voltage Regulation Algorithmmentioning

confidence: 99%

Section: Self-charging Techniquementioning

confidence: 99%

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

et al. 2017

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“…Power quality problems have also increased the demand for custom power devices [5]- [7]. These systems are usually operated by grid-connected inverters similar to those shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Compensation Strategy to Eliminate the Effect of Current Measurement Offsets in Grid-Connected Inverters

Lee¹,

Choi²

2014

Journal of Power Electronics

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For the digital control of systems such as grid-connected inverters, measuring inverter output currents accurately is essential. However, current measurement offsets are inevitably generated by current measurement paths and cause DC current components in real inverter output currents. Real inverter output currents with DC components cause the DC-link capacitor voltage to oscillate at the frequency of a utility voltage. For these reasons, current measurement offsets deteriorate the overall system performance. A compensation strategy to eliminate the effect of current measurement offsets in grid-connected inverters is proposed in this study. The validity of the proposed compensation strategy is verified through simulations and experiments. Results show that the proposed compensation strategy improves the performance of grid-connected inverters.

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“…Classification of different UPQC topologies has been presented by V. Khadkikar [7]. Several other control strategies have been described in different literatures [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][29][30]. Axente et al [8] proposed a sequence based compensation strategy to compensate both balanced and unbalanced sags.…”

mentioning

confidence: 99%

“…A solution to the objective function is found by particle swarm optimization method. Kwan et al [18] presented control design for UPQC using Output Regulation (OR) theory in which Kalman filter is used for extracting the state components of the unbalanced supply voltage and distorted load current. Along with this a linear quadratic regulation based self-charging circuit is implemented with-out depending on external dc source.…”

mentioning

confidence: 99%

Sinusoidal Current Control Strategy for UPQC in Grid Connected PV-Fuel Cell Microgrid

Senapati¹,

Senapati²,

Moharana³

2017

IJET

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Abstract-This paper focuses on the simulation of Unified Power Quality Conditioner (UPQC) with Grid-connected PV-FC (Photovoltaic Fuel Cell) System in grid connected mode. The proposed methodology focuses on drawing the sinusoidal current from the supply system even the presence of nonlinear loads in the system draws harmonic current. The harmonic power is provided by the Shunt Controller of UPQC, to restrict the harmonic components to be pulled at the supply, where as the series component is able to balance the voltage related problems such as unbalancing. The UPQC deals with the load harmonic power and the zero sequence power as well resulting to imbalance in the power system, additionally compensating the reactive power, so that the source voltage and the compensated current both will be in phase. The system performance under variable solar irradiance condition has been observed to be invariable.

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An Output Regulation-Based Unified Power Quality Conditioner With Kalman Filters

Cited by 79 publications

References 23 publications

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

Control Algorithms of Shunt Active Power Filter for Harmonics Mitigation: A Review

Compensation Strategy to Eliminate the Effect of Current Measurement Offsets in Grid-Connected Inverters

Sinusoidal Current Control Strategy for UPQC in Grid Connected PV-Fuel Cell Microgrid

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