Current Reference Control for Shunt Active Power Filters Under Nonsinusoidal Voltage Conditions

Suárez, Johann Farith Petit; Robles, G.; Amarís, Hortensia

doi:10.1109/tpwrd.2007.905811

Cited by 47 publications

(39 citation statements)

References 17 publications

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“…The selection of control strategy for the APF plays an important role to get the desired compensation characteristics. The two main control strategies for load compensation are perfect harmonic cancellation (PHC) and unity power factor (UPF) [3]- [13]. The PHC strategy results in distortion-free source currents and it is proved that under this strategy, APF provides better performance [3].…”

Section: Introductionmentioning

confidence: 99%

An Optimization-Based Algorithm for Shunt Active Filter Under Distorted Supply Voltages

Uyyuru

Mishra

Ghosh

2009

IEEE Trans. Power Electron.

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In this paper, an optimization-based control algorithm for the compensation of steady-state load under distorted supply voltages is presented. For balanced and sinusoidal supply voltages, load compensation using shunt active filter produces perfect harmonic cancellation (PHC) and unity power factor (UPF) source currents. However, when the supply voltages are distorted, compensation for PHC will not provide UPF, as the harmonics in the supply voltages are not utilized for delivering the average power. In the same way, to achieve UPF source currents, the compensated source currents should have the same harmonics, unbalance, shape, and be in phase with the respective supply voltages, thereby violating the perfect harmonic cancellation objective. Hence, there should be an optimal operation between these two important compensation characteristics. The optimization-based control algorithm presented in this paper gives the best power factor while satisfying the constraints such as total harmonic distortion limits and average power balance of source currents. It is also flexible to adopt different compensation characteristics based upon the supply voltage conditions. MATLAB and its optimization toolbox are used for simulation studies and solving the nonlinear optimization problem, respectively. The algorithm is validated by using a prototype of digital signal processor (TMS320F2812PGFA)-based shunt active power filter. Detailed experimental results are presented.Index Terms-Active power filter (APF), digital signal processor (DSP), load compensation, optimization, perfect harmonic cancellation, unity power factor.

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Section: Introductionmentioning

confidence: 99%

An Optimization-Based Algorithm for Shunt Active Filter Under Distorted Supply Voltages

Uyyuru

Mishra

Ghosh

2009

IEEE Trans. Power Electron.

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“…APF is a power electronic device used to compensate harmonic and reactive power required for loads [7][8][9][10][11][12]. It is connected either in the vicinity of the nonlinear load or at the point of common coupling (PCC), as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1. The objective of the APF is to detect the load harmonic and reactive current and to inject an equal but opposite current to cancels out the load harmonic and reactive current, and thus, only fundamental current to be supplied by the source [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Many control algorithms [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] for the extraction of the reference current for single-phase APF are reported. These algorithms include the instantaneous reactive power theory, notch filters, flux based controller, power balance theory and sliding mode controller.…”

Section: Introductionmentioning

confidence: 99%

“…W. Shireen and L. Tao [11] implemented a load current sensing based control algorithm using fixed point digital signal processor. J. F. Petit et al, [12] reported a unity power factor based control algorithm for non-ideal voltage source conditions and design a new low pass filter for filtering the source voltage. A DSP based optimal current controller [13] in which a combination of APF and nonlinear load is represented as equivalent conductance.…”

Section: Introductionmentioning

confidence: 99%

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Single-phase shunt active filter for customer generated harmonics and reactive power compensation

Patidar¹,

Singh

2010

2010 Conference Proceedings IPEC

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This paper proposes a conductance emulation based scalar control for shunt active power filter to compensate customer generated current harmonics and reactive power. Proposed technique emulates the combination of nonlinear load and shunt active filter as an equivalent conductance across the source voltage. If the utility voltage is sinusoidal, the shunt active filter compensates total current harmonics and the compensated source is also sinusoidal. However, if the utility voltage is distorted, it allows similar level of distortion in the compensated source current. This result in the shape of the compensated source current is same as the shape of the source voltage. Thus, the proposed algorithm attributes the responsibilities of the customer and utility at the point of common coupling. An inventive feature of the proposed controller is to achieve the conductance emulation without sensing the source voltage. The simulated results are presented with sinusoidal and nonsinusoidal mains voltage condition and are validated experimentally by developing a laboratory prototype of using a low cost, fixed-point TMS320F2812 digital signal processor.Keywords-Active power filter, customer generated current harmonics, dc-bus capacitor voltage, digital signal processor, power quality, reactive power compensation.

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A voltage fluctuation compensation control strategy at DC side for integrated power quality control device

Pan

Gong

Zhou

et al. 2022

Circuit Theory & Apps

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The power quality control process in the integrated power quality control device, especially for three‐phase unbalance control, usually leads to the capacitor voltage fluctuations on DC side. In rectifier control strategy, the output of the voltage loop is the reference value of the inner current loop, and the DC‐side voltage is the reference value of the voltage loop. Therefore, the DC‐side voltage instability will overlay a fluctuating component on the reference value, which affects the accuracy of the inner current loop control, causing a considerable impact on the transient performance of the integrated power quality control system. Hence, the stability of the DC‐side voltage becomes the main factor of the current loop control strategy. Unfortunately, in practical applications, such fluctuations on DC side are inevitable. In this paper, the DC‐side capacitor voltage fluctuation mechanism is studied, and a comprehensive power quality control strategy based on feed‐forward compensation is proposed to mitigate the DC capacitor voltage fluctuation influence. The proposed compensation control strategy prevents the impact of DC‐side voltage fluctuations on the control system. The simulation conducted on the developed experimental platform verified the feasibility and capability of the feed‐forward control strategy of the integrated power quality control system.

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Current Reference Control for Shunt Active Power Filters Under Nonsinusoidal Voltage Conditions

Cited by 47 publications

References 17 publications

An Optimization-Based Algorithm for Shunt Active Filter Under Distorted Supply Voltages

An Optimization-Based Algorithm for Shunt Active Filter Under Distorted Supply Voltages

Single-phase shunt active filter for customer generated harmonics and reactive power compensation

A voltage fluctuation compensation control strategy at DC side for integrated power quality control device

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