Adaptive repetitive controller for an active power filter in three
            <b>‐</b>
            phase four
            <b>‐</b>
            wire systems

Santiprapan, Phonsit; Booranawong, Apidet; Areerak, Kongpol; Saitō, Hiroshi

doi:10.1049/iet-pel.2019.1401

Cited by 11 publications

(9 citation statements)

References 26 publications

(57 reference statements)

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“…Compared to other filters, these filters are also treated as improving the harmonics and are economic, though their performance is not satisfactory in the presence of nonlinear loads. Present APFs are suitable for compensating dynamically up to 25th-harmonics order [109,110]. Moreover, these have higher power ratings and have wide commercial use.…”

Section: Technical and Economic Considerationsmentioning

confidence: 99%

A Comprehensive Survey on Different Control Strategies and Applications of Active Power Filters for Power Quality Improvement

Das¹,

Ray²,

Sahoo

et al. 2021

Energies

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Power quality (PQ) has become an important topic in today’s power system scenario. PQ issues are raised not only in normal three-phase systems but also with the incorporation of different distributed generations (DGs), including renewable energy sources, storage systems, and other systems like diesel generators, fuel cells, etc. The prevalence of these issues comes from the non-linear features and rapid changing of power electronics devices, such as switch-mode converters for adjustable speed drives and diode or thyristor rectifiers. The wide use of these fast switching devices in the utility system leads to an increase in disturbances associated with harmonics and reactive power. The occurrence of PQ disturbances in turn creates several unwanted effects on the utility system. Therefore, many researchers are working on the enhancement of PQ using different custom power devices (CPDs). In this work, the authors highlight the significance of the PQ in the utility network, its effect, and its solution, using different CPDs, such as passive, active, and hybrid filters. Further, the authors point out several compensation strategies, including reference signal generation and gating signal strategies. In addition, this paper also presents the role of the active power filter (APF) in different DG systems. Some technical and economic considerations and future developments are also discussed in this literature. For easy reference, a volume of journals of more than 140 publications on this particular subject is reported. The effectiveness of this research work will boost researchers’ ability to select proper control methodology and compensation strategy for various applications of APFs for improving PQ.

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Section: Technical and Economic Considerationsmentioning

confidence: 99%

A Comprehensive Survey on Different Control Strategies and Applications of Active Power Filters for Power Quality Improvement

Das¹,

Ray²,

Sahoo

et al. 2021

Energies

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“…Thus, excellent harmonic current tracking performance cannot be completely achieved by the PR controller. In addition, in a three-phase four-wire system, a repetitive (RT) controller [20] was adopted. This controller can provide the steady-state tracking accuracy for the harmonic current control.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Mitigation in Electric Railway Systems Using Improved Model Predictive Control

et al. 2021

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An electric multiple unit (EMU) high-speed train is the dynamic load that degrades the power quality in an electric railway system. Therefore, a power quality improvement system using an active power filter (APF) must be considered. Due to the oscillating load current in the dynamic load condition, a fast and accurate harmonic current-tracking performance is required. As such, this paper proposes the design of a model predictive control (MPC) since the minimization of cost function in the MPC process can suitably determine APF switching states. The design technique of MPC is based on the APF mathematical model. This controller was designed to compensate the time delay in the digital control. Moreover, the synchronous detection (SD) method applied the reference current calculations, as shown in this paper. To verify the proposed MPC, the overall control of APF was implemented on a eZdsp F28335 board by using the hardware-in-the-loop technique. The testing results indicated that the proposed MPC can provide a fast and accurate harmonic current-tracking response compared with the proportional-integral controller. In the load changing condition, the MPC was still effective in providing a good result after compensation. The percentage of total harmonic distortion, the percentage current unbalance factor, and the power factor would also be kept within the IEEE Standard 519 and IEEE Standard 1459.

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“…Based on the results, a combination of a feedback linearization technique and pole-zero cancellation using passive damping was proposed to solve the closed-loop performance inconsistency problem by assigning a constant cut-off frequency to each loop in a low-pass filter (LPF) form [10,11]. The PMSM true parameter dependence on the feedback gains and feed-forward terms may degrade the closed-loop performance in actual implementation; however, this can be alleviated by incorporating additional novel online parameter estimators as in [12][13][14]. Moreover, the constant inner loop cut-off frequency (for current control) should be increased to expand the feasible outer loop cut-off frequency range for improved speed transient performance; an increased current cut-off frequency may magnify the current ripple (resulting in switching loss) and degrade the relative closed-loop stability.…”

Section: Introductionmentioning

confidence: 99%

Online current cut‐off frequency self‐tuning active damping speed controller for permanent magnet synchronous motors

You

Kim

2021

IET Power Electronics

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This study suggests a dynamic current cut‐off frequency‐based pole‐zero cancellation speed controller for permanent magnet synchronous motors (PMSMs). The proposed self‐tuning algorithm automatically increases the current cut‐off frequency during only the transient periods and restores it as approaching the steady‐state operation. The outer loop control injects the active damping effect, resulting in a closed‐loop order reduction by pole‐zero cancellation from the particularly structured feedback gain. These two benefits contribute to the following advantages: (a) lowering the steady‐state current cut‐off frequency to improve the relative stability margin and (b) securing the capability of assigning the desired cut‐off frequency to both the inner and outer loops in the first‐order low‐pass filter form. A 500‐W PMSM experimental prototype platform confirms the effectiveness of the proposed controller.

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Adaptive repetitive controller for an active power filter in three ‐ phase four ‐ wire systems

Cited by 11 publications

References 26 publications

A Comprehensive Survey on Different Control Strategies and Applications of Active Power Filters for Power Quality Improvement

A Comprehensive Survey on Different Control Strategies and Applications of Active Power Filters for Power Quality Improvement

Harmonic Mitigation in Electric Railway Systems Using Improved Model Predictive Control

Online current cut‐off frequency self‐tuning active damping speed controller for permanent magnet synchronous motors

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